51710354 DL15 E - Cole-Parmer · 5.7.1 Assignment of a function key 44 5.7.2 Changing the assignment of a function key 44 5.7.3 Deleting the assignment of a function key 45 5.8 User

Operating Instructions

Titrator DL15

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Table of contents

METTLER TOLEDO DL15 I

Table of Contents1. Introduction 5

2. Safety measures 6

3. Standard equipment and Installation 73.1 Standard equipment DL15 Titrator 73.2 Installation 93.2.1 Attaching the titration stand to the titrator 93.2.2 Installing the burette 103.2.3 Installing the magnetic stirrer 103.2.4 Swiveling the titration stand 113.2.5 Attaching and removing the titration beaker 12

4. The titrator 134.1 Design of the titrator 134.2 Connections at the rear of the titrator 134.3 The operating concept 144.3.1 The display 154.3.2 The arrow keys 154.3.3 The function keys 154.3.4 The input keys 154.3.5 The menu keys 164.3.6 The Help function keys 174.3.7 The Escape key 174.3.8 The Reset key 174.3.9 The Home screen 18

5. Setup 195.1 Opening the Setup menu 195.2 Titrants 195.2.1 Adding a titrant 205.2.2 Modifying a titrant 205.2.3 Deleting a titrant 225.2.4 Printing a titrant 235.2.5 Titer determination from the titrant setup 235.3 Sensors 255.3.1 Adding a sensor 255.3.2 Modifying a sensor 265.3.3 Deleting a sensor 285.3.4 Printing a sensor 285.3.5 Sensor calibration from the sensor setup menu 295.3.6 Sensor test from the sensor setup menu 325.4 Peripherals 355.4.1 Setting up a printer 355.4.2 Setting up a balance 365.5 Standards 375.5.1 Adding a standard 375.5.2 Modifying a standard 375.5.3 Deleting a standard 395.5.4 Printing a standard 39

Table of contents

II METTLER TOLEDO DL15

5.6 Blank values 405.6.1 Adding a blank value 405.6.2 Modifying a blank value 405.6.3 Deleting a blank value 425.6.4 Printing blank values 425.6.5 Blank value determination from the blank values setup menu 435.7 Main methods 435.7.1 Assignment of a function key 445.7.2 Changing the assignment of a function key 445.7.3 Deleting the assignment of a function key 455.8 User management 455.8.1 Adding a user 455.8.2 Deleting a user 465.8.3 Defining an active user 465.8.4 Defining access rights 475.9 Settings 475.9.1 Setting the language 485.9.2 Setting the date 485.9.3 Setting the time 495.9.4 Defining the temperature unit 495.9.5 Entering the titrator ID 495.9.6 Entering a report header 505.9.7 Setting the beeper sound 505.10 Titration stand 50

6. Methods (Method) 536.1 Starting a method 546.1.1 Starting methods from the method editor 546.2 Creating a method 556.3 Modifying a method 566.3.1 Sample 586.3.2 Stir 606.3.3 Measure 606.3.4 EP titration 616.3.4.1 Control param. 626.3.4.2 Recognition 656.3.4.3 Termination param. 656.3.4.4 Evaluation 666.3.5 Calculation 676.3.5.1 Table of formulas for the calculation of results 706.3.6 Report 716.4 Deleting methods 726.5 Printing a methods list 736.6 Printing a method 736.7 Predefined methods 74

7. Series 757.1 Starting a sample determination using the Series key 757.2 Starting a titer determination using the Series key 767.3 Starting a blank value determination using the Series key 77

8. Analysis (Run) 798.1 Starting a sample determination using the Run key 798.2 Starting a titer determination using the Run key 808.3 Starting a blank value determination using the Run key 80

Table of contents

METTLER TOLEDO DL15 III

9. Performing a titration 839.1 Preparations 839.1.1 Filling the burette (rinsing) 849.2 Performing titration method 920 84

10. Auxiliary functions (Info, Sensor, Stirrer, Burette, Report, Results) 8910.1 Information menu 8910.2 Sensor 8910.2.1 Measuring temperature 9010.2.2 Measuring potential 9010.2.3 Calibrating a sensor 9110.2.4 Testing a sensor 9110.3 Stirrer 9110.4 Burette 9210.4.1 Rinsing the burette 9210.4.2 Rinsing the tip 9310.4.3 Dispensing 9310.4.4 Manual titration 9310.5 Report 9510.6 Results 9510.6.1 Displaying and printing results 9610.6.2 Statistics 9610.6.3 Terminating the series 98

11. Error messages, malfunctions and hardware tests 9911.1 Global errors and malfunctions 9911.2 Hardware tests 10011.2.1 User interface 10011.2.2 Communication interfaces 10111.2.3 Auxiliary I/O 10211.2.4 pH input value 103

12. Optional accessories and maintenance 10512.1 Optional accessories 10512.2 Service and maintenance 10712.2.1 Cleaning 10712.2.2 Disposal 107

13. Technical data 109

Appendix: Predefined calibration standards 120Index 124

Table of contents

IV METTLER TOLEDO DL15

Introduction

METTLER TOLEDO DL15 5

1. Introduction

The DL15 Titrator is the ideal solution for all requirements in the food industry, water/wastewater analysis, and the chemical industry when all that is needed is an endpoint titration or a pH measurement. The DL15 is mainly used to determine the acid and base content of a sample.It features easy-to-understand intuitive user guidance so that, for example, pressing the Run button twice starts the method you last ran.The user can assign three other methods to individual function keys, making methods easy to find and start.The keys used for the most frequently used manual functions are identified by pictograms. Titrants and sensors can be selected from the instrument’s database.Alphanumeric input is easily entered by means of a special keypad, just like with a mobile phone. There is no need to connect an external keyboard.The DL15 calculates the analytical results in predefined units and sends an analysis report to commercially available printers.

Safety measures

6 METTLER TOLEDO DL15

2. Safety measures

The titrators have been tested for the experiments and purposes documented in this Operating Instructions. This does not, however, absolve you from the responsibility of performing your own tests on the products supplied by us regarding their suitability for the methods and purposes you intend to use them for. Please adhere strictly to the following safety measures.

Measures for your protectionRisk of an electrical shock

Risk of explosion

Corrosive chemicals

Caution

Caution

– Make sure that the power cable supplied is plugged into a power outlet that is ground! A technical defect could otherwise have lethal consequences.

– Switch off the instrument and pull out the power cable before you open the instru-ment housing! An electrical shock could have lethal consequences.

Do not work in an environment subject to the risk of explosions! The instrument housing is not gastight (risk of explosion through spark formation, corrosion through the ingress of gases).

– Make sure that the titration beaker is always securely attached in the titration head! If the beaker falls out, you could injure yourself when working with poisonous titrants and solvents, strong bases or acids.

– When using chemicals and solvents, follow the manufacturers' instructions and the general rules for safety in the laboratory!

Measures for operational safety– Have the instrument serviced only by METTLER TOLEDO Service!– Wipe off any droplets of liquid! The instrument is not watertight.– Eliminate the following environmental effects:

• strong vibrations,• direct sunlight,• humidity over 80%,• temperatures below 5 °C and over 40 °C,• strong electric or magnetic fields!

Standard equipment and Installation


3. Standard equipment and Installation

3.1 Standard equipment DL15 Titrator

The parts are given with order number and the number of items supplied. For additional orders, some parts are only available as a minimum order quantity. In this case, the minimum order quantity is noted after the order number. The standard equipment and the optional accessories for the DV1020 burette are listed in the operating instructions for the interchangeable burette. This is supplied with the burette.

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Titrator

External power supply51107777

Power cable (country specific)(example)

Holder for titration stand51109361

Fixing screw (for holder)51109084

Magnetic stirrer51108750

Magnetic stirrer bars51191159

Cap (2x)51107608

Dummy cover51107600

Titration stand, manual51109058

Spacing ring00023842

Clamping ring00025653

Threaded ring 00025652

DG115-SCCombined glass electrode with sleeve frit for titrations in aqueous media00089806



Stopper ST 7.5 (4x)00023452(minimum order quantity 5 pcs.)

Connection cable for HP compatible printer51107780

2 g glass wool51108143

Interchangeable burette,complete (for further accessories: see operating instructions for the interchangeable burette)DV1020

DL15 Applications Brochure English

Operating InstructionsEnglish

Triaxial cable SC-LEMO-60(length: 60 cm)00089601

Electrode sleeve00025654 (minimum order quantity 5 pcs.)

Titration vessel 100 mLpolypropylene (2x)00101974(set of 1400 pcs.)

Drying tube holder00023915

Drying tube00023961

Protective cover for keypad51107666(minimum order quantity 3 pcs.)

Stopper ST 14.5 (5x)00023451(minimum order quantity 5 pcs.)

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3.2 Installation

3.2.1 Attaching the titration stand to the titrator

When the titration stand is delivered, the spacing ring, clamping ring and threaded ring are already mounted. The holder for the titration stand still has to be fixed to the titrator with the corresponding screw. Afterward, the assembled titration stand can be inserted from above. The diagram below shows how the titration stand is attached to the titrator and how the titration stand can be assembled and disassembled.

Cap

Screw

Titration stand

Spacing ring

Clamping ring

Threaded ring

Titration beaker

Holder for titration stand



3.2.2 Installing the burette

1. Screw the burette with holder onto the titrant bottle (see operating instructions for burette.

2. Slide the burette onto the titrator: The slot on the cam and piston rod must be parallel plug-in unit. (If this is not the case, press the Reset key.)

3. Turn the arrestment knob in the direction shown by the arrow to fasten the burette.4. Place the dispensing tube into one of the openings in the titration stand.

• When you rinse the burette and tubing, place the dispenser tube in a waste contai-ner!

Fixing screw for titration stand holderCam

Piston rod of the burette drive

Arrestment knob

3.2.3 Installing the magnetic stirrer

The titrator has a slot on the right side of the housing into which the METTLER TOLEDO magnetic stirrer can be inserted as shown in the following diagram.The magnetic stirrer is inserted into the slot of the titrator from the right so that it slides into the guide rail. The connection cable of the magnetic stirrer is guided out to the rear in the slot on the right side of the housing between the housing and the holder for the titration stand. To do this you may have to briefly remove the holder for the titration stand. The connection cable of the magnetic stirrer is connected to the "Magnetic stirrer" connection at the rear side of the housing. The arrow on the mini-DIN plug must point toward the head of the screw.

Magnetic stirrer



3.2.4 Swiveling the titration stand

The titration stand can be swiveled in order to work with the magnetic stirrer. If the compact stirrer is used, it is advisable to use the titration stand in the swiveled position.

You can swivel the titration stand in and out. To do this, you lift the titration stand slightly and pull it upward a little bit out of the holder. Now you can swivel it to the desired position and then let it slide back into the holder.

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3.2.5 Attaching and removing the titration beaker

To insert a titration beaker in the titration stand, you must first make sure that the threaded ring is loose (a quarter to half a turn is sufficient).Then, carefully insert the titration beaker from below into the titration stand A, and tighten the threaded ring B.

To remove the titration beaker from the titration stand, loosen the threaded ring about a quarter to half a turn C, and then carefully remove the titration beaker downward out of the titration stand.

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The titrator


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4. The titrator

4.1 Design of the titrator

4.2 Connections at the rear of the titrator

Magnetic stirrer

Titrator standBurette

Titrant bottle

Arrestment knob Sample beaker

Keypad

RS-P42 printer

Balance

HP compat. printer

Power supply

Magnetic stirrer

Overhead stirrer

mV / pH electrode

Referenceelectrode

Temperaturesensor

Polariz. electrode

Rondolino

not assigned

The titrator


The following devices can be connected to the corresponding interfaces:

Connection DevicemV/pH mV / pH electrode (sensor)

Ref Reference electrode

PT1000 PT1000 temperature sensor

Pol polarized electrode (sensor)

Overhead Stirrer Overhead stirrer

Magnetic Stirrer Magnetic stirrer

Balance Balance (RS232C)

Rondolino TTL I/O Rondolino, external devices

RS-P42 RS-P42 (GA-42) printer (RS232C)

Computer not assigned

Printer HP-compatible printer (Centronics)

5V/24V DC Power supply

4.3 The operating concept

The operating console of the titrator consists of the display in the middle with several groups of keys arranged around it. The various functional areas are described in the fol-lowing sections.

The titrator


4.3.1 The display

The display consists of four different elements. The title line across the top shows the name of the menu (B) and submenu (A) that you are currently using, or the name of the screen.On the right-hand side of the screen there is a scroll bar (D). This has a small black bar that represents the portion of the menu shown on the display. You can move the visible part of the menu upward or downward through the display area using the arrow keys. The black-inverted line (C) always displays the current selection.

The three black-inverted boxes (E) across the bottom line of the display show the functions to which the function keys directly below (F1, F2 and F3) are assigned for the menu item selected.

4.3.2 The arrow keys

The arrow keys are located on the right of the display. You can use these to move the black scroll bar up or down within a menu to select a menu item. If you simultaneously press an arrow key and the Shift key (arrow pointing upward), the scroll bar is shifted upward (or downward) three lines.

4.3.3 The function keys

The function keys are located directly below the display. Their assignment depends on the particular menu item selected and is shown by the three black-inverted boxes across the bottom line of the display, for example, Print for the command to print, or OK to confirm a selection or a change.

4.3.4 The input keys

The input keys are located on the right-hand side of the operating console. They allow alphabetical, numerical and special characters to be entered.

Entering character strings into text boxesTo enter a number or one of the letters written above a number, press the corresponding number key repeatedly until the desired character appears in the display. After a short pause, the cursor jumps one step further for you to enter the next character.

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The titrator


- Pressing the number key 2 once, for example, writes the letter "a"; pressing it three time, the letter "c", and so on.

- To obtain large characters, you must press and hold down the Shift key (arrow point-ing upward) while selecting the character.

- You can delete the last character by pressing the Del key. If you simultaneously press the Delete key and the Shift key, the entire content of the text box is deleted.

- To insert a space, press the number key 0.- You can insert special characters by simultaneously pressing the number key 1 and

the Shift key. A screen appears displaying all the available special characters. The black box indicates the character currently selected.

- Select the desired character using the arrow keys and the < and > keys. - Press OK to enter the special character in the text area.

Entering numbers into number boxesOnly numbers, a point, and a minus sign can be entered into number boxes.

- To enter a number, press the desired number key.- To enter a negative sign, simultaneously press the . and the Shift keys.

4.3.5 The menu keys

Using the menu keys, you can call up the four main menus of the titrator.Each of these three menus has a particular assignment for performing an automatic analy-sis.

The Setup key opens the Setup menu of the titrator. All the resources such as titrants, sen-sors, standards and blank values necessary for the titration are stored and managed in this menu. In addition, you can select the internal titrator settings you require and configure peripheral devices.

The Method key opens the Method menu of the titrator. The methods stored in the titrator are managed in this menu. You can store your own methods, delete and modify them. A number of methods developed by METTLER TOLEDO are already stored and can be directly used to perform analyses or be used as templates for new methods.The resources you want to use for a method must be defined and stored beforehand in the Setup menu.

The Run key opens the Start menu to perform an analysis. Methods used for different determinations can be selected and started.

The Series key opens the start menu to perform a sample series analysis. Methods used for different determinations can be selected and startedAn automation of the series determination can be achived by using a Rondolino sample changer.

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The titrator


4.3.6 The Help function keys

The Help function keys let you access functions that are not directly involved in perform-ing a sample analysis, but nevertheless in some way support it (hence the name Help functions).Examples of such functions are the rinsing of burettes, the calibration or testing of a sensor or the display and management of analytical results.

This menu lets you measure the pH, potential or temperature of a solution and test and calibrate pH and ISE sensors.

The burette and the burette tip can be rinsed, and any volume you like dispensed. You can perform a manual titration.

The variable speed stirrer can be switched on and off.

You can view the titrator information and open a menu to test the titrator hardware and the connected devices.

You can view, print and manage the results of your analyses including statistical evalu-ations.

In the Report menu you can define and print additional reports.

4.3.7 The Escape key

By pressing the Escape key, you can quit a menu or a selection at any time and discard the changes you made. You always return to the previous menu and the original values and names remain the same.

4.3.8 The Reset key

Pressing the Reset key terminates analyses, rinsing or dispensing processes, and other actions. The titrator is then reset and you return to the Home screen. Data that was not saved beforehand is lost.

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The titrator


4.3.9 The Home screen

The Home screen appears on the display as soon as you switch on the titrator.It is the starting point for operating the titrator. Each time you reset the titrator by pressing Reset, you return to the Home screen.The screen displays the following important information:

• the current date and time.• the current user. (See "5.8.3 Defining an active user")• the access rights for the active user: Expert or Routine. (See "5.8.4 Defining access rights for active users")• the assignment of the F1, F2 and F3 function keys with the main methods. (See "5.7 Main methods")

Setup


5. Setup

In this chapter you learn how to set up the titrator for your specific requirements.

To perform a titration, you must first define and configure the resources (titrants, sensor, peripherals, etc.) used for the method in the titrator.

5.1 Opening the Setup menu

- Press the Setup button to open the Setup menu.- A list of the resources appears.

You can scroll the list upward or downward using the arrow keys on the right next to the display. The black-inverted line always shows the current selection.

If you press Print, the list with the available entries for the selected resource is printed. See "5.4.1 Setting up a printer"If you press OK, the list of the selected resources appears on the display.

5.2 Titrants

- Press Setup to open the Setup menu.- Select "Titrant" using the arrow keys and press OK to confirm. The list of the titrants

stored in the titrator appears.

The titrants used by the METTLER methods are already preset in the titrator. You can delete titrants, and modify or print the parameters of the selected titrants. Furthermore, you can determine and store the titer for each titrant using an automatic function.

• You can add a new titrant by modifying the parameters of an existing titrant and then storing it under a new name.

• A maximum of 30 titrants can be stored in the titrator.

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Setup


5.2.1 Adding a titrant

Proceed as follows to define a new titrant:


stored in the titrator appears.- Select an existing titrant from the list of titrants and press Modify. - Change the name to the name of the new titrant you want to define.- Change the parameters of the titrant corresponding to the new titrant you want to

define. See "5.2.2 Modifying a titrant".- Press Save to confirm the changes you have made.- The new titrant appears in the list.

• You can discard the changes you have made by pressing Esc to quit the selection. In this case, the titrant is not stored.

• Determine the titer of the new titrant using the automatic titer determination (Titer key) if you have not already entered it manually. See "5.2.5 Titer determination from the Titrant setup".

• In any case, first change the name of the titrant. Otherwise the changes you made for the existing titrant will be effective on pressing the Save key, and no new titrant will be stored in the titrator!

5.2.2 Modifying a titrant


stored in the titrator appears.- Select the titrant whose parameters you want to change.- Press Modify.- The list of parameters of the selected titrant appears and the individual parameters

can be selected and changed.- Press Save to accept your changes and quit the menu, or press Esc to discard your

changes and quit the menu.

All titrants contain the following parameters:

Setup


Name The name of the titrant.

Conc. [mol/L] The concentration of the titrant in [mol/L].

Titer The titer can be automatically determined using a titer determi-nation, or manually entered. If the titer is determined through a titer determination, the current date and time are stored.

Minimum The "Minimum" parameter lets you define the lower limit for the range within which the titer must be.

Maximum The "Maximum" parameter lets you define the upper limit for the range within which the titer must be.

Titer This parameter indicates whether the titer determination was automatically determined ("Determined") or manually entered ("Edited").

Standard Here you can select one of the standards defined in the titrator to determine the titer of your titrant.

Burette Using this parameter you can define the burette volume. Pos-sible values are 1, 5, 10 and 20 mL.

Charge With this parameter you can record information about the batch from which the titrant originates.

Fill rate [%] The "Fill rate" indicates how quickly the burette is filled with titrant. Filling the burette at the highest rate corresponds to a fill rate of 100%, and at the lowest rate to a fill rate of 30%. The preset value is 100%

Check after [day] This value is used to calculate the expiration date for the titrant. A period of 0 to 100 days can be defined. If the parameter has the value 0, no expiration date is determined.

Expiry If the value 0 is entered for the "Check after" parameter, no expiration date is calculated.

Date The date of the last titer determination. Each time you store the titrant, the date is set to 00-00-0000.

Time The time of the last titer determination. Each time you store the titrant, the time is set to 00:00.

Setup


• If you change the name of a titrant and save your changes, a new titrant is created under the new name.

• If the value for the titer determined by a titer determination or the manually entered value is outside the range defined by "Minimum" and "Maximum", an error message appears and the titer must either be determined or entered again.

• When you use a titrant of higher viscosity, it is advisable to reduce the fill rate in order to prevent air being sucked-in when filling the burette.

• If, at the start of an analysis, the titant has expired (the expiration date has been exceeded), a message appears to draw your attention to this. If you still want to per-form the determination, you must confirm the message. In the report, a correspond-ing line appears that notes that the titrant has expired.

5.2.3 Deleting a titrant


stored in the titrator appears.- Select the titrant you want to delete.- Press Delete.- In the dialog that follows, you are asked whether you really want to delete the selec-

ted titrant. Confirm deletion by selecting "Yes" and pressing OK, or terminate deletion by selecting "No" and pressing OK to confirm.

• You can only delete titrants that have not been used in a method.• Titrants referenced by METTLER methods cannot be deleted.

Setup


5.2.4 Printing a titrant


stored in the titrator appears.- Select the titrant whose parameters you want to print.- Press Print.- The parameters of the selected titrant are printed on the printer as soon as you con-

firm by pressing OK.

5.2.5 Titer determination from the titrant setup

The accuracy of the results of your analysis depends on the accuracy with which you determine the concentration of your titrant.When you prepare a titrant, a number of errors can occur that cause the actual concentra-tion (Cactual) to deviate from the desired concentration (Cnom) of your titrant.The quotient of the actual concentration of the titrant and its desired concentration is called the titer of the titrant:

In the ideal case, Cactual = Cnom and the titer, t, is 1. If the concentration of the titrant is too high, t is > 1. If the concentration of the titrant is too low, t is <1.

The titer enables the titrator to calculate the results of your analyses corresponding to the actual concentration of the titrant used. It is therefore essential for you to accurately determine the actual concentration of the titrant against a reference substance before you first use it.The titrator can store the corresponding titer as a parameter for every titrant defined in the titrator. As long as the titer for a titrant has not been determined, the default value 1 is used. You can determine the titer yourself, enter the value for the titrant manually in the Setup menu, or to determine it through automatic titer determination with the titrator. Before doing this, you should make sure that a suitable standard is already stored in the titrator for the primary standard you want to use. If this is not the case, you must first define a new standard in the instrument. See "5.5.1 Adding a standard".

cactualcnom

t =

Setup


Performing the titer determination from the Titrant setup


stored in the titrator appears.- Select the titrant whose titer you want to determine.- Press Modify.- Select "Standard".- Check whether the parameters of the selected standards match your primary stan-

dard substance. If this is not the case, press Modify and select the suitable standard from the list of standards stored in the titrator. Press OK to confirm your selection.

- Press Titer to open the titer determination function.- A list of the methods appears. It shows only methods that use the titrant whose titer

you want to determine.- Select a suitable method using the arrow keys and start the titer determination by

pressing Start.- The titer determination is performed according to the conditions predefined for the

method used. (See "6.3 Modifying a method"). The calculations from the method are ignored. The sample data from the method is replaced with default data.

- After the determination, you can view the statistics of the current sample series by pressing Stat..

- If the titer determined in this way is within the defined limits, press Save to accept the result of the titer determination (or the mean results if you have performed the titer determination several times).

- The date and time of the last titer determination are automatically updated.- Quit the display that follows by pressing Esc. in order to prevent the date and time

being set to 00-00-0000 and 00:00.

• It is also possible to perform the automatic titer determination from the Analysis menu. See "8.2 Starting a titer determination using the Run key"

• The concentration of a titrant can change after you have determined the titer. It is therefore absolutely essential to determine the titer at regular intervals in order to guarantee constant accuracy of the analysis results. The titrator can also generate a specific expiration date for each titrant, which requests the user to determine the titer again after a certain period.

Setup


5.3 Sensors

- Press Setup to open the Setup menu.- Select "Sensors" using the arrow keys and press OK to confirm. The list of sensors

stored in the titrator appears.Some sensors are already predefined in the titrator. You can add new sensors, change them or delete them from the list. For pH and ISE sensors you can also perform an automatic sensor calibration.You can define:

• mV sensors• pH sensors• ion selective sensors (ISE)• polarized sensors

• To add a new sensor, you must change the parameters of one of the existing sen-sors and then save it under a new name.

• A maximum of 20 sensors can be stored in the instrument.

5.3.1 Adding a sensor

To define a new sensor, proceed as follows:


stored in the titrator appears.- Select an existing sensor from the list of sensors and press Modify. - Change the name to the name of the new sensor you want to define.- Change the parameters of the sensors according to the new sensor you want to

define. See "5.3.2 Modifying a sensor".- Press Save to confirm your changes.- The new sensor appears on the list.

• You can discard your changes at any time by pressing Esc to quit the selection. In this case the sensor is not stored.

Setup


• Before using it for the first time, you must calibrate a newly defined pH or ISE sensor using the automatic calibration function (the Calib. key) if you have not already ma-nually entered the slope and zero point. See "5.3.5 Sensor calibration from the sensor setup menu".

• In any case, first change the name of the sensor. Otherwise when you press Save, your changes will be effective for the existing sensor and no new sensor is stored in the instrument!

5.3.2 Modifying a sensor


stored in the titrator appears.- Select the sensor whose parameters you want to change from the list of sensors.- Press Modify.- The list of parameters of the selected sensor appears; the individual parameters can

be selected and changed.- Press Save to accept your changes and to quit the menu, or press Esc to discard

your changes and quit the menu.

The following parameters can be changed, depending on the type of sensors:

Name The name of the sensor.

Input Depending on the type of sensor, either the pH or the pol. input can be selected to connect the sensor. (see "4.2 Connections at the rear of the titrator")

Type This parameter lets you define the sensor type for sensors at the pH input. There is a choice of pH, mV and ISE.

Unit A possible unit can be selected for the sensor (pH, mV or pX).This appears only for pH and ISE sensors!

SNR The serial number of the sensors can be entered here.

Zero point [pH]orZero point [pX]

The zero point of the pH or ISE sensor used. This value can be entered manually or be determined by the instrument during automatic sensor calibration. Prior to the initial calibration, the default value of 7.00 for pH sensors and ISE sensors is stored here. This appears only for pH and ISE sensors!

Slope [mV/pH]orSlope [mV/pX]

The slope of the pH or ISE sensor used. This value can be en-tered manually or be determined by the instrument during the automatic sensor calibration. Prior to the initial calibration, the default value of -59.16 for pH sensors is stored here. This appears only for pH and ISE sensors!

Setup


Min. [mV/pH]orMin. [mV/pX]

Min. defines the lower limit for the tolerance range within which the slope must be. For a pH sensor, the default value is -65.00. The upper limit is correspondingly defined by Max.This appears only for pH and ISE sensors!

Max. [mV/pH]orMax. [mV/pX]

Max. defines the upper limit for the tolerance range within which the slope must be. For a pH sensor, the default value is -50.00. The lower limit is correspondingly defined by Min.This appears only for pH and ISE sensors!

Temperature [°C],[°F] or [K]

The measurement temperature can be specified here. This appears only for pH and ISE sensors!

Calib.. This parameter indicates whether the calibration was automa-tically determined ("Determined") or manually entered ("Edi-ted").

Check after [day] This value is used to calculate the time for the next calibration of the sensor. A period of 0 to 100 days can be defined. If this parameter has the value 0, no date is set for the calibration of the sensor.This appears only for pH and ISE sensors!

Expiry The "Check after" parameter sets the expiration date for the sensor, which indicates the time when the sensor has to be recalibrated. If only the value 0 is entered for the "Check after" parameter, then no expiration date is calculated.This appears only for pH and ISE sensors!

Date The date of the last sensor calibration. This date is reset to 00-00-0000 each time the sensor is stored.This appears only for pH and ISE sensors!

Time The time of the last sensor calibration. This time is reset to 00:00 each time the sensor is stored.This appears only for pH and ISE sensors!

Test data Pressing the Test key opens the sensor test data.This appears only for pH and ISE sensors!

Setup


• If you change the name of a sensor and save the changes, a new sensor with a new name is created.

• The parameters that appear in the list depend on the type of sensor.• For pH, mV, ISE sensors and the phototrode, the pH input must be chosen; for polar-

ized sensors, the pol. input.• Prior to the first pH sensor calibration, the date and expiration date are 00-00-0000

and the time 00:00. The value for "Check after" is set to 0 days, and zero point and slope are set to the default values.

5.3.3 Deleting a sensor

- Press Setup to open the Setup menu.- Select "Sensors" using the arrow keys and press OK to confirm: The list of sensors

stored in the titrator appears.- Select the sensor you want to delete from the list.- Press Del.- In the dialog that follows you are asked whether you really want to delete the selected

sensor. Confirm deletion by selecting "Yes" and pressing OK, or terminate the deletion process by selecting "No" and pressing OK to confirm.

• You can only delete a sensor that has not been used in a method.

5.3.4 Printing a sensor


stored in the titrator appears.- Select the sensor you want to print.- Press Print.- The parameters of the selected sensor are printed on the printer as soon as you press

OK to confirm.

Setup


5.3.5 Sensor calibration from the sensor setup menu

Zero point and slope

The calibration parameters of a pH electrode are the zero point pH0 (pH at a potential of 0 mV) and the slope.The theoretical values of a pH electrode are stored in the titrator:

• Zero point = 7.0 [pH] and• Slope = -59.16 [mV/pH].

The pH calculation is performed according to the following equation:

mV signalslope

pH=pH0+

The slope is corrected for temperature in the calculation of the pH.

The sensor should be calibrated in order to obtain correct values for your electrode. The theoretical values are then automatically overwritten with the calculated calibration data during the calibration.

If you only calibrate your electrode with one buffer solution, only the electrode zero point is recalculated. (Not possible with the titrator.)

With a two- or multiple-point calibration, the zero point and slope are calculated using linear regression.

0 7

+mv

-mv

pH0

86 9

MP

E

pH

MP

(MP)

0 7 14

+mv

-mv

pH0

E0

E

pH

0 7

+mv

-mv

pH0

86 9MP

E

pH

Setup


Performing sensor calibration from the sensor setup menu


stored in the titrator appears.- Select the sensor you want to calibrate.- Press Modify.- Press the Calib..- The setup menu for sensor calibration with the parameter list appears.


Buff. type The type of buffer solutions to be used for the calibration. You can select: pH (to define yourself) pX (to define yourself) DIN/NIST DIN Fluka Merck MT-EU MT-USA Fisher JISFor the temperature dependencies of the buffers, see "Appendix A: Predefined calibration standards".

Number of buffers With this parameter you can define the number and type of buffer solutions to be used for the calibration.

Speed [%] The stirrer speed.

Temp. sensor Either the PT1000 temperature sensor can be selected or the temperature can be entered manually under the parameter "Temperature".

Temperature The temperature during the sensor calibration. With this value the temperature-corrected slope of the pH electrode is used in the calculation of the pH. Appears only when the parameter "Temp. Sensor" is set to "Manual".

dE [mV] During dt, the drift of the electrode potential must be less than dE/dt [mV/s] in order to be accepted as measured value.This occurs in an interval defined by t(min) and t(max).

dt [s]

t(min) [s] The measured value is not accepted before t(min).

t(max) [s] The measured value is in any case accepted after t(max).

Report You can select whether you want a report to be printed on the printer or not.

Setup


- Select "Buff. type" using the arrow keys. Then press Modify and select the buffer type you are using.

- Select "Number of buffers " and press Modify.- Add the desired number of buffer solutions to the buffer list using Add. You can

select these from a list and then press OK to include them in the buffer list. (You can remove buffers again from the list by selecting them and pressing Delete.)

- When you have defined the desired number of buffer solutions, press OK to return to the setup menu for the calibration.

- Select "Speed [%]" and enter the speed for the stirrer in percent.- Select "Temp.sensor", press Modify and select the "PT1000" temperature sensor or

"Manual".- If you have selected "Manual" for "Temp.Sensor", select "Temperature" and enter the

temperature in the corresponding units.- Select "dE [mV]" and enter the millivolt number for the determination of the maxi-

mum drift dE/dt [mV/s] of the electrode potential.- Select "dt [s]" and enter the time in seconds for the determination of the maximum

drift dE/dt [mV/s] of the electrode potential.- Select "t(min) [s]" and "t(max) [s]" one after the other and define the time at which

the measured value at the earliest (tmin) and at the latest (tmax) is to be accepted.- Select "Report" and select "none" or "printer" for the report printout using Modify.- Start the sensor calibration by pressing Start.- For the selected number of buffer solutions, a message appears each time reques-

ting you to prepare the corresponding buffer solution. You must confirm this by pressing OK to start the measurement with the corresponding buffer solution.

- After all buffer solutions have been measured, a summary of the calibration results appears on the display with the following information:• Name of the sensor• Calibration "OK" / "not OK"• measured slope [mV/pH]• measured zero point [pH]

If the measured slope is outside the limits defined for the sensor Min. [mV/pH] and Max. [mV/pH], "Calibration not OK" appears and the calibration results are not ac-cepted.

- If the measured slope lies within the limits defined for the sensor, the slope and zero point for the sensor can be accepted by pressing Save. The date and time for the calibration are automatically updated.

- If "Printer" was selected for the "Report" parameter, a report of the sensor calibration is printed on the printer.

- Quit the display that follows by pressing Esc. in order to prevent the date and time from being set to 00-00-0000 and 00:00.

• The sensor calibration can also be opened using the Sensor Help function key. (See: "10.2.3 Calibrating a sensor")

• For storing into Setup, the slope is converted to 25 °C.

Setup


5.3.6 Sensor test from the sensor setup menu

Using the "Test sensor" function you can perform a test for a pH or ISE sensor. The data determined in the test can be printed on the printer.

Performing the sensor test from the sensor setup menu


stored in the titrator appears.- Select the sensor you want to test.- Press Modify.- Select "Test data" and press Test.- The setup menu for the sensor test appears with the parameter list.

Setup



Buff. type The type of the buffer solutions to be used for the test. You can select: pH (to define yourself) pX (to define yourself) DIN/NIST DIN Fluka Merck MT-EU MT-USA Fisher JIS

Number of buffers This parameter lets you define the number of buffer solutions to be used for the sensor test.Two buffer solutions must be selected.

Speed [%] The stirring speed of the stirrer.

Max. drift [mV/min] The maximum allowable drift in [mV/min]. Determines the maximum value for the drift determined by the test in [mV/min].

Temp. sensor You can select the PT1000 temperature sensor or enter the temperature manually under the parameter "Temperature".

Temperature The temperature during the sensor tests. This value is used to correct the slope of the pH electrode for temperature and is taken into account in the calculation of pH.It appears only if the parameter "Temp. sensor" is set to "Manual".

dE [mV] During dt, the drift of the electrode potential must be less than dE/dt [mV/s] in order to be accepted as a measured value.This occurs in a period defined by t(min) and t(max).

dt [s]

t(min) [s] The measured value is not accepted before t(min).

t(max) [s] The measured value is in any case accepted after t(max).

Output You can select "Printer" or "None".

Setup


- Using the arrow keys, select "Buff. type". Then press Modify and select the buffer type you are using.

- Select "Number of buffers " and press Modify.- Add two buffer solutions to the buffer list using Add. You can select these from a list

and then press OK to include them in the buffer list. (You can remove the buffers again from the list by selecting them and then pressing Delete.).

- Press OK to return to the setup menu for the sensor test.- Select "Speed [%]" and enter the speed for the stirrer in percent.- Select "Max. Drift [mV/min]" and enter a value in [mV/min] that the drift must not

exceed.- Select "Temp. sensor", press Modify and select the "PT1000" temperature sensor or

"Manual".- If you have selected "Manual" for "Temp. Sensor", select "Temperature" and enter the

temperature in the corresponding units.- Select "dE [mV]" and enter the millivolt number for the determination of the maximum

drift dE/dt [mV/s] of the electrode potential.- Select "dt [s]" and enter the time in seconds for the determination of the maximum

drift dE/dt [mV/s] of the electrode potential.- Select "t(min) [s]" and "t(max) [s]" one after the other and define the time at which

the measured value at the earliest (tmin) and at the latest (tmax) is to be accepted.- Start the sensor test by pressing Start.- For the two selected buffer solutions a message appears each time requesting you to

prepare the corresponding buffer solution. You must confirm this by pressing OK to start the measurement with the corresponding buffer solution.

- After the measurements have been performed for both buffer solutions, the drift is determined for a period of 60 seconds.

If you have selected "Printer" under the menu item, the results of the sensor test are recorded on the printer. There follows the summary of the results of the sensor test on the display with the following information:

• Name of the sensor• Drift "OK" / "not OK"• Slope "OK" / "not OK"• Drift [mV/min]• Zero point [pH]• Slope [mV/pH]

Setup


If the measured slope or the measured drift is outside the limits defined for the sen-sor, then "Drift not OK" or "Slope not OK" appears.

- The sensor test was successful if "OK" appears for both for the drift and the slope.• The sensor test can also be opened using the Sensor Help function key. (See

"10.2.4 Testing a sensor")

5.4 Peripherals

- Press Setup to open the Setup menu.- Select "Peripherals" using the arrow keys and press OK to confirm. The setup menu

for the peripherals that can be connected to the titrator appears.

The following peripheral instruments can be connected:

• Printer (GA 42, RS-P42, HP compatible)• Balance (uni- or bidirectional)

Proceed as follows to setup these peripheral instruments.

5.4.1 Setting up a printer


for the peripheral instruments that can be connected to the titrator appears. - Select "Printer" and press Modify.- Select one of the printers from the list.- Press OK to accept your changes and quit the menu, or press Esc to discard your


The following printers can be selected:• GA 42• RS-P42• HP compatible printer

Setup


If you have connected an HP compatible printer, you can also define the paper format for this printer.- Select "HP compatible" and press Modify.- In the menu that follows you can select the appropriate paper from the list of entries

by pressing Modify.The following paper formats for HP compatible printers can be selected:

• 8 1/2 * 11"• 8 1/2 * 12"• A4

• If your titrator is not connected to a printer, select "Not defined" and confirm by pres-sing OK.

5.4.2 Setting up a balance

If you have connected a balance to the titrator, you can configure it in this menu. You can then transfer the value for the sample weight directly from the balance each time the titrator requests it by pressing Balance.


for the peripheral instruments that can be connected to the titrator appears. - Select "Balance"and press Modify.- Using Modify you can define the type of communication between the titrator and the

balance.- Press OK to accept your changes and to quit the menu, or press Esc to discard your


The following configuration possibilities can be selected for a balance:• "unidirectional" (for unidirectional communication between titrator and balance)• "bidirectional" (for bidirectional communication between titrator and balance)• "Not defined"

• If your titrator is not connected to a balance, select "Not defined" and confirm with OK.

• For the METTLER TOLEDO AE, AG, AT, AX and XS balances, use the setting "Bidirec-tional" and the following balance settings: Baud rate: 2400, Data bits: 7, Parity: even, Handshaking: no.

Setup


5.5 Standards

- Press Setup to open the Setup menu.- Select "Standards" using the arrow keys and press OK to confirm. The setup menu

for the standards stored in the titrator appears, or "Template" if no standards are stored in the titrator.

In this menu you can define and store primary standard substances using different pa-rameters. These standards are needed by the titrator for the automatic titer determination and can be changed and also deleted again.

• A maximum of 20 standards can be stored in the titrator.

5.5.1 Adding a standard

Proceed as follows to define a new standard:


for the standards stored in the titrator appears, or "Template" if no standards are stored in the titrator.

- Select an existing standard from the list of standards (or the template if no standard is stored) and press Modify.

- Change the name to the name of the new standard you want to define.- Change the parameters of the standard (or the template) according to the new stan-

dard you want to define. See "5.5.2 Modifying a standard".- Confirm your changes finally by pressing Save.- The newly defined standard appears in the list.- You can discard your changes at any time by quitting the selection by pressing Esc.

In this case, the standard is not stored.

5.5.2 Modifying a standard


for the standards stored in the titrator appears.- Select the standard whose parameters you want to change.- Press Modify.- The list of parameters of the selected standard appears; the individual parameters

can be selected with the arrow keys and changed.- Press Save to accept you changes and quit the menu, or press Esc to discard your


Setup


The following parameters can be changed depending on the type of standard:

Name Here you can enter the name under which the standard is to be stored.

Entry type As entry type you can select mass or volume, depending wheth-er you want to add the standard as a weighed quantity or a measured volume during the automatic titer determination.

Minimum [g] / [mL]

With "Minimum" and "Maximum" you can define a range for the quantity of the standard to be added. Minimum defines the lower limit of this range.Depending on the selected entry type, Minimum is given in [g] or in [mL].

Maximum [g] / [mL]

Using "Minimum" and "Maximum" you can define a range for the quantity of the standard to be added. Maximum defines the upper limit of this range.Depending on the selected entry type, Minimum is given in [g] or in [mL].

Mol. m. [g/mol]

Enter the molar mass of the standards.This only appears if entry type mass is selected.

Conc. [mol/L] Enter the concentration of the standard.This only appears if entry type volume is selected.

Equivalent number z

Enter the equivalent number z of the standard.

• If you change the name of a standard and save your changes, a new standard is cre-ated under the new name.

Setup


5.5.3 Deleting a standard

- Press Setup to open the Setup menu.- Select "Standards" using the arrow keys and press OK to confirm. The list of stan-

dards stored in the titrator appears. - Select the standard you want to remove from the list.- Press Delete.- In the dialog that follows you are asked whether you really want to delete the selec-

ted standard. Confirm deletion by selecting "Yes" and pressing OK, or terminate the deletion process by selecting "No" and pressing OK.

• You can only delete standards that are not referenced by a titrant.

5.5.4 Printing a standard


for the standards stored in the titrator appears.- Select the standard whose parameters you want to print.- Press Print.- The parameters of the selected standard will be printed on the printer as soon as you

confirm by pressing OK.

Setup


5.6 Blank values

- Press Setup to open the Setup menu.- Select "Blank values" using the arrow keys and press OK to confirm. The list of blank

values stored in the titrator appears, or the entry "Template" if no blank values are stored in the titrator.

In this menu you can determine and store all the blank values for the solvents you use. These blank values are used for the calculation of the results of your analyses and can be changed or deleted here.

• A maximum of 20 blank values can be stored in the titrator.

5.6.1 Adding a blank value

Proceed as follow to add a new blank value:



- From the list of blank values, select an existing blank value (or the template, if no blank value is stored) and press Modify.

- Under "Solvent", enter the name of the solvent whose blank value you want to define.- Change the parameters of the blank value (or the template) according to the new

blank value you want to define. See "5.6.2 Modifying a blank value".- Press Save to confirm your changes.- The new blank value appears on the list.- You can discard your changes at any time by pressing Esc to quit the selection. In

this case no blank values are stored.

• You can enter the blank value of the solvent manually or by means of the automatic blank value determination. See "5.6.5 Blank value determination from the blank values setup menu".

5.6.2 Modifying a blank value


values stored in the titrator appears.- Select the blank value whose parameters you want to change.

Setup


- Press Modify.- The list of the parameters of the selected blank value appears. Individual parameters

can be selected and then changed.- Press Save to accept your changes and to quit the menu, or press Esc to discard

your changes and quit the menu.

The following parameters can be changed:

Solvent Here you can enter the name of the name of the solvent whose blank value is to be stored.

Blank value [mmol]

The blank value of the solvent. This value can either be entered manually or determined by the titrator during the automatic blank value determination. If the blank value is automatically determined, the date and the time are automatically updated.

Minimum [mmol] "Minimum" and "Maximum" let you define a range in which the blank value of the solvent must be. "Minimum" defines the lower limit of this range.

Maximum [mmol] "Minimum" and "Maximum" let you define a range in which the blank value of the solvent must be. "Maximum" defines the upper limit of this range.

Blank This parameter indicates whether the blanc value was automa-tically determined ("Determined") or manually entered ("Edi-ted").

Volume [mL] Enter the volume of the solvent to be used.

Check after [day] This value is used to calculate the expiration date for the blank value. A period of 0 to 100 days can be defined. If the value of this parameter is 0, no expiration date is calculated.

Expiry The expiration date for the blank value. If no other value than 0 is given for the parameter "Check after", then no expiration date is calculated.

Date The date of the last blank value determination. Each time the blank value is stored the date is set to 00-00-0000.

Time The time of the last blank value determination. Each time the blank value is stored the time is set to 00:00.

Setup


• If you change the name of a blank value and store your changes, a new blank value is created under the new name.

5.6.3 Deleting a blank value


values stored in the titrator appears.- Select the blank value whose parameters you want to delete.- Press Del..- In the dialog that follows, you are asked whether you really want to delete the selec-

ted blank value. Confirm deletion by selecting "Yes" and pressing OK, or terminate the deletion process by selecting "No" and pressing OK.

• You can only delete blank values that are not referenced by a method.

5.6.4 Printing blank values



- Select the blank value whose parameters you want to print. - Press Print.- The parameters of the selected blank value are printed on the printer as soon as you

press OK to confirm.

Setup


5.6.5 Blank value determination from the blank values setup menu



- Select the blank value whose value you want to determine.- Press Modify.- Press Blank.- In the display that follows, the methods are shown that reference the blank through

the parameter "Solvent".- Select one of the methods shown and press Start.- The blank value determination is performed according to the preset conditions of the

method you use. (See "6.3 Modifying a method")- If "Printer" was selected for the parameter "Report", a report of the blank value deter-

mination is printed on the printer.- By pressing Stat. you can view the statistics of the current sample series.- If the blank value determined is within the defined limits, the value (or the mean va-

lue of the results if you have performed the blank value determination several times) can be accepted by pressing Save. The date and time for the blank value determina-tion are then automatically updated.

- Quit the display that follows by pressing Esc. to prevent the date and time from being set to 00-00-0000 and 00:00.

• You can also perform the automatic blank value determination from the Analysis menu. See "8.3 Starting a blank value determination using the Run key"

5.7 Main methods

- Press Setup to open the Setup menu.- Select "Main methods" using the arrow keys and press OK to confirm. The Main

methods setup menu appears.

Setup


Using the "Main methods" setup function, a total of three methods (METTLER or User methods) can be assigned to the function keys F1, F2 and F3.These methods can then be started directly from the Home screen by pressing the function keys.Methods can be assigned to the function keys in the setup menu for the main methods; the assignment can be changed or deleted.

5.7.1 Assignment of a function key


methods setup menu appears.- Select the function keys to which you want to assign a method.- Press Modify.- In the menu that follows, select either "User methods" or "METTLER methods" and

press OK to confirm your selection.- In the next menu, select the desired method and press OK to confirm your selection.- In the Main methods setup menu, the number of the assigned method appears next

to the corresponding function key.- Quit the Main methods setup menu by pressing OK, or select another function key if

you want to change its assignment.

5.7.2 Changing the assignment of a function key


methods setup menu appears. - Select the function key to which you want to assign another method.- Press Modify.- In the menu that follows, select either "User methods" or "METTLER methods" and

press OK to confirm your selection.- In the next menu, select the desired method and confirm your selection with OK.- In the Main methods setup menu, the number of the newly assigned method appears

next to the corresponding function key.- Quit the Main methods setup menu by pressing OK, or select another function key if


Setup


5.7.3 Deleting the assignment of a function key


methods setup menu appears. - Select the function key whose assignment you want delete.- Press Del.- "Not assigned" now appears next to the selected function key.- Quit the Main methods setup menu by pressing OK, or select another function key if


5.8 User management

- Press Setup to open the Setup menu.- Select "User management" using the arrow keys and press OK to confirm. The User

management setup menu appears.

In the "User management" setup menu, titrator users can be added or changed on a user list.The active user can be defined here; the user’s access rights (Expert or Routine) can be changed. (See "5.8.4 Defining access rights")

• As long as no user is entered in the user list, the entry "No user" appears instead of the user name.

5.8.1 Adding a user


management setup menu appears. - Select "User list" and press Modify.- Press Add.- Enter the name of the new user using the keypad and press Save to store the name

you enter.

Setup


- The name appears in the user list.- You can quit the user list by pressing OK.- You can define another user by pressing Add.

5.8.2 Deleting a user


management setup menu appears. - Select "User list" and press Modify.- Select the user who you want to delete from the list, and press Del.- The name is deleted from the user list.

5.8.3 Defining an active user


management setup menu appears. - Select "Active" and press Modify.- The user list is displayed.- Select the user who you want to define as an active user from the list, and press

Active to confirm your selection.- The new active user is displayed in the User management setup menu and on the

Home screen.

• By pressing Inactive you can deactivate the active user. "No user" appears again on the display.

Setup


5.8.4 Defining access rights

The access rights for the user can be restricted through the setting "Routine". In this mode the user is only allowed to view and print settings in the Setup menu and methods and but cannot to change them. (Exeptions: Selection of the titration stand in the "Routine" mode and changing the active user.)Furthermore, in this mode it is not possible to delete results or statistics. - Press Setup to open the Setup menu.- Select "User management" using the arrow keys and press OK to confirm. The User

management setup menu appears. - Select "Access".- By pressing Modify you can switch between the settings "Expert" and "Routine".- When you switch from "Expert" to "Routine", you will be requested to define a pass-

word. Enter a password using the keypad and press Save to store it in the titrator.- On switching from "Routine" to "Expert " you will be requested to enter the password

you defined before. Enter the password using the keypad and press OK to confirm. - You can quit the setup menu for the user management by pressing OK.- The modified access rights are displayed on the Home screen.

5.9 Settings

- Press Setup to open the Setup menu.- Select "Settings" using the arrow keys and press OK to confirm. The Settings setup

menu appears.

In this menu you can change different titrator settings such as date, time and language.

The following settings can be made:

• Language• Date• Time• Temperature unit• Titrator ID• Report header• Beep

Setup


5.9.1 Setting the language

You can choose German, English, French, Spanish, Italian and Russian.


menu appears. - Select "Language" and using Modify switch to your desired language.- Press OK to accept your changes and quit the menu, or press Esc to discard your


5.9.2 Setting the date

You can change the date stored in the titrator and the date format.


menu appears. - Select "Date".- Press Modify.- Select "Day", "Month" and "Year" one after the other and enter the current date using

the keypad.- Select "Format" and press Modify to change to your desired date format.Four different date formats are available:

• 31-11-2004• 11/31/2004• 31-Nov-2004• Nov/31/2004

- Press OK to accept your changes and quit the menu, or press Esc to discard your changes and quit the menu.

Setup


5.9.3 Setting the time


menu appears. - Select "Time".- Press Modify.- Select "Hour" and "Minute" one after the other and enter the current time.- Select "Format" and press Modify to change to your desired time format.Two different time formats are available:

• 05:00 pm• 17:00


5.9.4 Defining the temperature unit


menu appears. - Select "Temp. unit" and press Modify to change to your desired temperature unit.The temperature units available are: °C, °F and K.- Press OK to accept your changes and quit the menu, or press Esc to discard your


5.9.5 Entering the titrator ID


menu appears. - Select "Titrator ID".- You can now enter any set of characters and numbers using the keypad. This ID is

always included in the report.- Press OK to accept your changes and quit the menu, or press Esc to discard your


Setup


5.9.6 Entering a report header


menu appears - Select "Report header" and press Modify.- You can now enter two lines of text using the keypad. These appear in the header of

the report form. You can switch between the two text lines using the arrow keys. Each line can contain up to 24 characters.


5.9.7 Setting the beeper sound


menu appears - Select "Beep" and change to your desired setting using Modify. - There are two different settings for the beep sound:

• "No": A beep occurs only if there is a system malfunction.• "Yes": A beep occurs each time a key is pressed, with system malfunctions,

with error messages, and after performing a titration as soon as the results are displayed.


5.10 Titration stand

- Press Setup to open the Setup menu.- Select "Titration Stand" using the arrow keys and press OK to confirm. The Titration

Stand setup menu appears. In this menu you can select a titration stand and change between the internal overhead stirrer and the magnetic strirrer.

- Select the menu item "Stand" with the arrow keys and press Modify to change to your desired setting "Internal", "Extern" or "Rondolino".• "Internal": With this setting the titrator controls the internal titration stand.• "Extern": The titrator can communicate with external devices (e.g. Kjeldahl distilla-

tion units of different manufacturers, pumps, etc.). See "13. Technical data".

Setup


• "Rondolino": Performing an automated sample series determination with a Rondolino sample changer requires this setting.

- Select "Stirrer" using the arrow keys. - Press Modify to select "Magnetic stirrer" or "Overhead stirrer". If you select

"Rondolino" as titration stand the setting "Overhead stirrer" is given.- Press OK to store your changes.

Setup


Method


6. Methods (Method)

Pressing the Method key opens the method editor.The titrator automatically performs analyses with the aid of predefined methods. In this chapter you learn how to open methods and how to define your own methods. A number of METTLER methods are already stored in the titrator. These methods have been developed by METTLER TOLEDO for certain applications and can be used directly for the corresponding analysis. See "6.7 Predefined methods".You can modify METTLER methods according to your requirements and store them as User methods.A complete titration method consists of sample preparation, stirring or waiting times, the actual titration itself, result calculation and a report. In the titrator, these steps are defined as functions. They are performed one after the other in an analysis. The individual func-tions consist of parameters whose values you can change.

Method (Method ID / Name) Functions Parameter

SampleParameter 1Parameter 2…

StirParameter 1Parameter 2…

MeasureParameter 1Parameter 2…

EP titrationParameter 1Parameter 2…

Calculation 1Parameter 1Parameter 2…



ReportParameter 1Parameter 2…

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Method


Each method has a name and a three-digit number that uniquely characterizes each me-thod. For User methods, the method identification number (method ID) can be between 1 and 899. The range 900 to 999 is reserved for METTLER methods.You can create a new method by modifying the parameters of the functions of an existing method and storing them under a new method ID. The method editor can be opened by pressing the Method key. It allows you to create, modify, delete, print and start methods.

6.1 Starting a method

There are three ways to start a method:- Using Run (see "8.1 Starting a sample determination using the Run key".)- Using the Home screen (Start of the three main methods, see "4.3.9 The Home

screen").- Using the method editor (see "6.1.1 Starting methods from the method editor").

6.1.1 Starting methods from the method editor

Proceed as follow to start a method from the method editor:- Press Method to open the method editor.- The Methods menu appears with the following items:

• Method ID• User methods• METTLER methods

In the "Method ID" box, you can enter the method ID of an existing method (User or MET-TLER methods).

- Press Start to execute the selected method.

If you do not know the method ID of the method that you want to execute, you can use the arrow keys to select the method from a list using its name and method ID:

- Select "User methods" if want to select a self-defined method.- Select "METTLER methods" if you want to select a METTLER TOLEDO predefined me-

thod.- Press OK to confirm.- In the display that follows, you can select the desired method from a list using its

name and method ID. - Press Start to execute the selected method.

Method


6.2 Creating a method

You can create a new method by changing the parameters of the functions of an existing method and storing the method under a new method ID.

- Press Method to open the method editor.- The Methods menu appears with the following items:


- Select any method you want to modify and store as a new method.

Selecting a method using its method IDYou can enter the method ID of an existing method (User or METTLER method) in the "Method ID" box.

- If you press Modify, the functions of the selected method are shown on the display.- Modify the individual functions according to your requirements. (See "6.3 Modifying

a method")- Select "Title" and enter a title for the new method using the keypad.- Select "Method ID" and enter a method ID (range 1-899) for the new method.- Press OK. - A summary of the new method with method ID, title, author, date of creation and

time appears on the display.- Press OK to store the new method.

Selecting a method from the methods list If you do not know the method ID of the method you want to modify, you can use the arrow keys to select the method from a list using its name and method ID:

- Select "User methods" if want to select a self-defined method.- Select "METTLER methods" if you want to select a predefined method from METTLER

TOLEDO.- Press OK to confirm.

Method


- In the display that follows, you can use the arrow keys to select the desired method with its name and method ID from a list.

- If you press Modify, the functions of the selected method are shown on the display.- Modify the individual functions according to your requirements. (See "6.3 Modifying

a method")- Select "Title" and enter a title for the new method using the keypad.- Select "Method ID" and enter a method ID (range 1-899) for the new method.- Press OK. - A summary of the new method with method ID, title, author, date of creation and time

appears on the display.- Press OK to store the new method.

6.3 Modifying a method

You can modify the parameters of a User method as desired and afterward store the method again under its original method ID. If you want to modify the parameters of a METTLER method, you must afterward store the method as a User method under a new method ID.

To modify the parameters of a method, you must first select the method:- Press Method to open the method editor.- The Methods menu appears with the following items:


- Select the method whose parameters you want to modify.

Selecting a method using a method IDYou can enter the method ID of an existing method (User or METTLER method) in the "Method ID" box.

- If you press Modify, the functions of the selected method are shown on the display.- Modify the individual functions according to your requirements.- Press OK to store the new method.

Method


Selecting a method from the methods listIf you do not know the method ID of the method that you want to modify, you can use the arrow keys to select the method from a list using its name and method ID:

- Select "User methods" if want to select a self-defined method.- Select "METTLER methods" if you want to select a predefined method from METTLER

TOLEDO.- Press OK to confirm.- In the display that follows, you can select the desired method using its name and

method ID from a list. - If you press Modify, the functions of the selected method are shown on the display.- Modify the individual functions according to your requirements.

The parameters of the following functions are explained in the sections that follow:

• 6.3.1 Sample• 6.3.2 Stirring• 6.3.3 Measuring• 6.3.4 EP titration• 6.3.5 Calculation • 6.3.6 Report

Method


6.3.1 Sample

This function defines the request for sample information or the input of sample data such as weight, density and equivalent number, and temperature.

The following parameters can be set:

Request ID [Yes/No]This defines whether the ID of the sample is to be requested at the beginning of an analysis, "YES", or as a parameter in the method, "No".Select from the possible settings using Modify

IDIf "No" was selected, you can enter the sample ID here.The ID can be entered using the keypad.

Entry type [Mass/Volume/Pieces]This defines whether the sample is to be added as defined mass, defined volume or a de-fined number of pieces. The request for sample data is then adapted with regard to units.Select from the possible settings using Modify

Request sample [Yes/No]This determines whether mass, volume or number of pieces is to be requested at the begin-ning of the analysis or defined in the method.Select from the possible settings using Modify.

Min. [mL] [g] [pcs.] This defines the lower limit for entry of the sample data at the start of the analysis.Appears only if "Yes" was selected for "Request sample". The unit depends on the setting of the parameter "Entry type".The desired value can be entered using the keypad.

Max. [mL] [g] [pcs.]This defines the upper limit for the entry of the sample data at the start of the analysis.Appears only if "Yes" was selected for "Request sample". The unit depends on the setting of the parameter "Entry type". The desired value can be entered using the keypad.

Weight [g]The weight of the sample. Appears only if "No" was selected for "Request sample" and "Mass" was selected as "Entry type". The desired value can be entered using the keypad.

Volume [mL]The volume of the sample. Appears only if "No" was selected for "Request sample" and "Volume" was selected as "Entry type". The desired value can be entered using the keypad.

Method


Density [g/mL]The density of the sample substance. Appears only if "No" was selected for "Request sample" and "Mass" or "Volume" was selected as "Entry type". The desired value can be entered using the keypad.

Weight [g/pc.]The weight per piece of the sample substance. Appears only if "Number of pieces." as "Entry type" was selected. The desired value can be entered using the keypad.

Number [pcs.]The number of sample units in a "piece". Appears only if "No" was selected for "Request sample" and "Number of pieces" as "Entry type" was selected. The desired value can be entered using the keypad.

Mol.m. [g/mol]The molar mass of the sample substance in [g/mol]The desired value can be entered using the keypad.

Equival. number zThe equivalent number of the sample substance.The desired value can be entered using the keypad.

Temp. Sensor [Manual/PT1000]Indicates whether the temperature is to be entered manually or determined automatically by the PT1000 temperature sensor.The temperature unit is the unit that was selected in the Setup.Select from the possible settings using Modify.

Request [Yes/No]Indicates whether the temperature at the start of the analysis is to be requested or stored in the method. Appears only if "Manual" was selected for "Temp. sensor".Select from the possible settings using Modify.

Temp.The temperature during the determination. Appears only if "Manual" was selected for "Temp. sensor" and "No" was selected for "Request temperature".The temperature unit is the unit that was selected in the Setup.The desired value can be entered using the keypad.

Method


6.3.2 Stir

The parameters of the Stir function let you determine the speed of the overhead or magnetic stirrer during the analysis and whether the stirring time is to be requested before beginning the titration or defined in the method.

Speed [%]The speed (rpm) of the stirrer during the analysis in %. (0%, stirrer does not rotate, 100%, stirrer rotates at the highest speed)The desired value can be entered using the keypad.

Request duration [Yes/No]Indicates whether the stirring time is to be requested at the beginning of the analysis, "Yes", or is to be defined in the method, "No". The stirring time indicates how long the stirrer has to stir to homogenize the solution before the titration or the measurement is started.Select from the possible settings using Modify.

Time [s]The stirring time. Appears only if "No" was set for "Request time".The stirring time indicates how long the stirrer has to stir to homogenize the solution before the titration or the measurement is started.The desired value can be entered using the keypad.

6.3.3 Measure

The Measure function enables you to measure the potential of a solution under defined conditions.The following parameters can be set:

SensorUsing Modify, you obtain the list of sensors from which you can select the desired sensor. Press OK to confirm. The unit (pH, or mV) is adapted for the other parameters according to the sensor selected.

Unit [pH, pX, mV]The unit for the measurement, depending on the sensor selected. You cannot change this parameter.

Pol. Curr. [µA]The polarization current strength in [µA]. The desired value can be entered using the keypad. Appears only if you have selected a polarized sensor.

Method


dE[mV]The drift of the electrode potential must be less than dE/dt during dt in order to be accepted as a measured value. This occurs during an interval defined by t(min) and t(max). The desired value can be entered using the keypad.

dt[s]The drift of the electrode potential must be less than dE/dt during dt, in order to be accepted as a measured value. This occurs during an interval defined by t(min) and t(max). The desired value can be entered using the keypad.

t(min) [s]t(min) defines the earliest possible time that the measured value is accepted.The desired value can be entered using the keypad.

t(max) [s]t(max) defines the latest possible time after which the measured value is in any case accepted.The desired value can be entered using the keypad.

6.3.4 EP titration

Titr.Using Modify, you obtain the list of titrants from which you can select the desired titrant. Press OK to confirm. The concentration of the titrant from the Setup is used.

Conc. [mol/L]The concentration of the titrant. You cannot change this parameter; the concentration of the titrant is used as defined in the Setup.

Sensor Using Modify, you can access the list of sensors from which you can select the desired sensor. Press OK to confirm. The unit (pH, or mV) is adapted for the other parameters according to the sensor selected.

• pX sensors are used like mV sensors in the method. The calibration parameters in the Setup are used to perform calculations for measured values in [ppm] or [mol/L] in the method.

Unit [pH, mV]The unit for the measurement depending on the selected sensor. You cannot change these parameters.

Method


Pol. Curr. [µA]The polarization current strength in [µA]. The desired value can be entered using the keypad. Appears only if you have selected a polarized sensor.

Blank [Entry/From list/Request]Here you can define whether, at the beginning of the analysis, a blank value is to be re-quested, "Request"; entered in the method, "Entry"; or selected from the list of blank values, "From list".Select from the possible settings using Modify.

Value [mmol]This parameter allows you to enter a blank value in the method. The desired value can be entered using the keypad.Appears only if "Entry" was selected for the parameter "Blank value".

SolventUsing Modify, you obtain the list of blank values stored in the titrator. From there you can select a blank value and confirm by pressing OK.Appears only if "From list" was selected for the parameter "Blank value".

Request predisp. [Yes/No]Here you can define whether a certain volume of titrant is to be predispensed before the start of the titration. With "Yes", this volume is requested before the beginning of the titration; with "No", you can enter the volume in the method.Select from the possible settings using Modify.

Vol.[mL]With this parameter you can enter a volume for predispensing in [mL]. The desired value can be entered using the keypad.Appears only if "No" was selected for the parameter "Request predisp.".

Req. back value [Yes/No]Here you can define whether a back value is to be requested at the beginning of the analysis, "Yes", or is entered in the method, "No".Select from the possible settings using Modify.

Back val. [mmol]With this parameter you can define a back value in the method. The desired value can be entered using the keypad.Appears only if "No" was selected for the parameter "Req. back value".

6.3.4.1 Control param.With the control parameters you can define the type of addition of titrant and the measure mode. You can access the parameters of this function using Modify.

Method


Determin. [Normal/Cautious/Fast/User]Using the Determination parameter you can select a criterion for performing the titration. The possibilities are "Normal", "Cautious", "Fast" and "User".For the "Normal", "Fast" and "Cautious" settings, corresponding sets of parameters are stored in the titrator. You can view these parameters by printing the method. No other parameters need to be adapted. The "User" setting gives you the possibility to individually adapt all the parameters with regard to the addition of titrant and the measure mode.

The following parameters "Addition" and "Measure" with the corresponding subparameters are only available if you have selected "User" for the parameter "Determination".

Addition [Incremental/Dynamic]By using this parameter you can set whether the addition of the titrant is to be performed incrementally or dynamically. If you select "Incremental", the same volume increment is always added throughout the entire titration; if you select "Dynamic", the volume increment added during the titration is adapted dynamically within the preset limits to the course of the titration in order to obtain a constant potential difference per increment.Using Modify, you obtain the next screen on which you can select "Incremental" or "Dyna-mic" and define the subparameters using Modify. (For faster titrations, you should select "Incremental".)

For the "Incremental" setting, the following parameters are available:

dV [mL]Defines the size of the volume increment that is added in each dispensing step. This volume increment remains constant throughout the entire titration. The value in [mL] can be entered using the keypad.

For the "Dynamic" setting the following parameters are available:

dEnom [mV]Here you can enter the desired potential difference in [mV] per titration step.

dVmin [mL]This value defines the minimum size of the volume increment. The value in [mL] can be entered using the keypad.

dVmax [mL]This value defines the maximum size of the volume increment. The value in [mL] can be entered using the keypad.

• The range defined by dVmin and dVmax should be chosen as large as possible and the titrant addition controlled by dEnom.

Method


Measure [EQU controlled/Fix time]You can select either equilibrium-controlled "EQU controlled" or timed increment "Fix time" measured value acquisition.Using these parameters, you can define the wait time until the measured value acquisition after an incremental addition. In the equilibrium-controlled measure mode the wait time is variable; in the timed increment mode it is constant. You can only decide which measure mode is best for your method when you know the reaction time of the components and the response time of the sensor used. • Equilibrium measure mode is used for acid/base titrations in aqueous solutions,

argentometric, complexometric, surfactant and redox titrations.• Timed increment is used for acid/base titrations in nonaqueous solutions.

Using Modify, you obtain the next screen where you can select "EQU controlled" or " Fix time" and define the subparameters using Modify.

For the "EQU controlled" setting the following applies:Before the titrator dispenses the next increment, equilibrium must have been reached and the measured value must have stabilized.Responsible for the equilibrium is• the measured change in potential, dE, in the solution within the defined time dt.

The wait time to the next incremental addition also depends on the definition

• of the minimum time (tmin) and the maximum time (tmax).

As soon as the change in potential of the solution is less than the defined equilibrium (dE/dt), the titrator accepts the measured value and adds the next increment.This can occur at the earliest at tmin and occurs at the latest at tmax. At tmax the measured value is in any case accepted even if the equilibrium condition is not met.This measure mode has the result that the incremental addition is fast in the flat part of the titration curve, and slow in the steep part.The following parameters are available:

dE [mV]Defines the maximum change in potential per time interval dt in [mV]. The desired value can be entered using the keypad.

dt [s]Gives the time interval for the calculation of the calculation dE[mV]/dt[s]. The desired value can be entered using the keypad.

t(min) [s]Defines the wait time in [s] after which measured value acquisition occurs at the earliest. The desired value can be entered using the keypad.

t(max) [s]Defines the wait time in [s] after which the measured value is in any case accepted. The desired value can be entered using the keypad.

Method


For the "Fix time" setting the following applies:The titrator waits for the time interval defined by dt after each incremental addition before it adds the next increment. The following parameters are available:

dt [s]Defines the wait time dt in [s] after each incremental addition. The desired value can be entered using the keypad.

You can access the parameters of this function using Modify.

6.3.4.2 RecognitionThe Recognition function lets you set the tendency for endpoint recognition. You can access the parameters of this function using Modify.

Tendency [Positive/Negative]Select "Positive" if you want the endpoint to be detected only for a positive tendency; select "Negative" if you want the endpoint to be detected only for a negative tendency. You can select from the possible settings using Modify.

• If the start potential already exceeds EP, the titration is terminated without the addi-tion of titrant.

• For a relative EP the tendency describes the position of the EP related to the measu-red start potential.

6.3.4.3 Termination param.The termination parameters let you determine when a titration is terminated. You can access the parameters of this function using Modify.

Vmax [mL]The maximum volume of titrant dispensed during the determination. This parameter is a safety measure to prevent unnecessary addition of titrant if a malfunction occurs during the titration. The desired value can be entered using the keypad.

At tmax [Yes/No]This parameter lets you define whether the titration is to be terminated after a certain time, "Yes", or not "No".

t(max) [s]This parameter lets you define the time interval after which the titration is terminated. The desired value can be entered using the keypad.This parameter appears only if "Yes" was selected for the parameter "At tmax".

Method


6.3.4.4 EvaluationThe Evaluation function lets you define which endpoint of the titration is to be evaluated. You can access the parameters of this function using Modify.

Numb. EPs [None/1/2]The number of potentials that are to be additionally evaluated.Possible values are none, 1 or 2.Select from the possible settings using Modify.

End point 1 [Absolute/Relative]The type of endpoint determination for Endpoint 1. Absolute or relative to the start poten-tial. Select from the possible settings using Modify.Appears only if "1" or "2" was selected for the parameter "Numb. EPs".

Potential 1 [pH/mV]The value for Potential 1. The unit depends on the sensor used, pH or mV. The desired value can be entered using the keypad.Appears only if "1" or "2" was selected for the parameter "Numb. EPs".

End point 2 [Absolute/Relative]The type of endpoint determination for Endpoint 2. Absolute or relative to the start poten-tial. Select from the possible settings using Modify.Appears only if "2" was selected for the parameter "Numb. EPs".

Potential 2 [pH/mV]The value for Potential 2. The unit depends on the sensor used, pH or mV. The desired value can be entered using the keypad.Appears only if "2" was selected for the parameter "Numb. EPs".

Method


6.3.5 Calculation

You can define three different calculations per analysis (Calculation 1-3). The following parameters are available for this:

Calculation [None/Cont./Consump./Meas. val./User def./Blank/Titer]The type of calculation, depending on the desired result.Select from the possible settings using Modify.

None No calculation is performed.

Content The result of the calculation gives the content of the analysis.

Consumption The result of the calculation gives the consumption.

Measured value A measured value is produced.

User def. A user-defined formula for the calculation can be selected. The formula for the calculation can be adapted with a factor and a constant to obtain the result in the desired unit.

Blank value The blank value relative to 2. or 3. EPs is calculated.

Titer The titer relative to 2. or 3. EPs is calculated.

Type [Cont. w. Blank/Cont. back titr./Cont.]The type of content determination. Content, content with blank value or content back titration can be selected and indicate whether the titration parameter back value or blank value is taken into account for the result.If you select "Content with blank value", the default formula R=Q*C/m is replaced with R=(Q-Bl)*C/m.If you select "Content back titration", the default formula R=Q*C/m is replaced with R=(Ba-Q)*C/m.

Appears only if "Content" was selected for "Calculation".Select from the possible settings using Modify.

• It is not sufficient, under the function EP-Titration to request or enter a blank value or back value for it to be included in the calculation. In addition, you must set the parameter "Type" in the calculation function accordingly.

FormulaFor user-defined calculations, you can select a formula to calculate the results. (See "6.3.5.1 Table of formulas for the calculation of results".)Select from the possible settings using Modify.This parameter only appears if you have selected "User def." for the parameter "Calcula-tion".

CFor user-defined calculations, you can enter a constant to convert the results to the desired unit.The desired value can be entered using the keypad.This parameter only appears if you have selected "User def." for the parameter "Calcula-tion".

Method


• The constant C is only included in the calculation if C is also present in the calcula-tion formula.

FactorFor user-defined calculations, you can enter a factor to recalculate the results.The desired value can be entered using the keypad.This parameter only appears if you have selected "User def." for the parameter "Calcula-tion".

NameFor user-defined calculations, you can enter a name that appears later in the report.The desired name can be entered using the keypad.This parameter only appears if you have selected "User def." for the parameter "Calcula-tion".

UnitYou can select the desired unit for the result. The possibilities depend on the parameter Calculation. Select from the possible settings using Modify.

Calculation: Content [g/L] [mg/L] [mol/L] [eq/L] [meq/L] [mg/g] [%] [ppm] [mol/kg] [mmol/kg] [mmol/g] [mmol/L]

Calculation: Consumption [mL] [mmol]

Calculation: Measured value [ppm] [mmol/L] [g/L] [mol/L] [mV] [pH] [pX]

Calculation: User-def. Can be freely chosen, depends on the formula for the calculation of the results.

For user-defined calculations, the unit can be entered using the keypad.

Which EPThe parameter indicates for which number EP the result is calculated. Does not appear for determinations of the type "Measurement".The following possibilities are available for EP:1, 2, Start value Select from the possible settings using Modify.

Decimal placesYou can enter the number of decimal places for the result of the calculation.The desired value can be entered using the keypad.

Result limits [Yes/No]Select "Yes" if you want to enter the limits for the result, or "No" if you want the result cal-culated independent of limits.Select from the possible settings using Modify.

Method


MinimumEnter the lower limit for the calculated result.Appears only if you have selected "Yes" for the "Result limits".The desired value can be entered using the keypad.

MaximumEnter the upper limit for the calculated result.Appears only if you have selected "Yes" for the "Result limits".The desired value can be entered using the keypad.

• If the result of a titration is outside the defined result limits, the result is marked with an exclamation point and a message appears on the display.

Statistics [Yes/No]This parameter lets you define whether the statistics of the analysis is included in the report, "Yes", or not, "No".Select from the possible settings using Modify.

The following table summarizes the formulas on which the individual calculations are based.

Method


Calculation: Titer Calculation: blank value

Calculation: consumption

Calculation: measured value

Calculation: contentdefault formula:R = Q*C/m

Calculation: user. def.

R = m/(VEQ*c*C) R = Q mL: R = VEQ mV: R = E %: C = M/(10*z) R = Q*C/m (default formula)

Liquid standards:C = 1/(cst*z)

mmol: R = QQ = VEQ*c*t

pH: zero point[pH] + E[mV]/slope[mV/pH]

mg/g: C = M/z R = (Q-Bl)*C/m (default for-mula including the blank value)

Solid standards:C = M/(1000*z)

pX: zero point[pX] + E[mV]/slope[mV]

g/L: C = M/z R = (Ba-Q)*C/m (default for-mula including the back value)

ppm: R = pw(-pX)*1000 ppm: C = M*1000/z mL: R = VEQ

mmol/L: R = pW(-pX)*1000

mg/L: C = M*1000/z mmol: R = QQ = VEQ*c*t

g/L: R = pW(-pX) mol/L: C = 1/z mV: R = E

mol/L: R = pw(-pX) mol/kg:C = 1/z R = pw(-pX)*1000(mmol/L, ppm or other unit of measure, depending on the position of the zero point)

mmol/g:C = 1/z R = pw(-pX)(mol/L, g/L or other unit of measure, depending on the position of the zero point)

mmol/L: C = 1000/z

mmol/kg: C = 1000/z

eq/L: C = 1

meq/L: C = 1000

R = (Q-Bl)*C/m (con-tent with blank value)

R = (Ba-Q)*C/m (con-tent back titration)

The following table summarizes the symbols used and their meaning:

E Potential [mV, pH...] of the function measure Bl Blank value [mmol]

T Temperature [°C, °F, K] Ba Back value [mmol]

R Calculated result c Nominal concentration of the titrant [mol/L]

C Calculation constant c*t Actual concentration of the titrant [mol/L]

VEQ mL consumption t Titer

Q VEQ*c*t [mmol] z Equivalent number

M Molar mass [g/mol] cst Concentration of the liquid standard [mol/L]

6.3.5.1 Table of formulas for the calculation of results

Method


6.3.6 Report

This function lets you determine whether a report is to be printed or not and defines the size of the report.You can define the following parameters:

Output [Printer/None]Determines whether a report is to be printed "Printer", or not "None".Select the setting you want using Modify.

Results [GLP/None/Short]Determines the size of the presentation of the results in the report. "GLP" Good Laboratory Practice - comprehensive."None" No presentation of the results."Short" Brief presentation of the results.Select the setting you want using Modify.

Meas. val. table [Yes/No]Determines whether a measured value table is to be included as part of the report, "Yes", or not "No". Does not appear for measurements.Select the setting you want using Modify.

E - V curve [Yes/No]Determines whether a titration curve (potential plotted against volume) is to be included in the report, [Yes], or not, [No]. Appears only for measurementsSelect the setting you want using Modify.

dE/dV curve [Yes/No]Determines whether the first derivative of the titration curve (potential plotted against vol-ume) is to be included in the report, [Yes] or not, [No]. Appears only for measurementsSelect the setting you want using Modify.

Method


6.4 Deleting methods

You can only delete User methods. The METTLER methods stored in the titrator cannot be deleted. To delete a method, you must first select it:- Press Method to open the method editor.

Selecting a method using the method IDYou can enter the method ID of an existing User method in the Method ID box.- By pressing Modify you can display the functions of the selected method.- Using Del. you can delete the selected User method.- On the screen that follows, you must select "Yes" and then press OK to confirm dele-

tion. - The method is deleted and you return to the start screen of the Methods menu.

Selecting a method from the methods listIf you do not know the method ID of the method that you want to delete, you can select the method from a list using its name and method ID: - Select "User methods".- Press OK to confirm - On the screen that follows, use the arrow keys to select the desired method from a

list using its name and method ID. - By pressing Modify, you can display the functions of the selected method.- Using Del. you can delete the selected User method.- On the screen that follows, you must select "Yes" and then press OK to confirm dele-

tion. - The method is deleted and you return to the start screen of the Methods menu.

Method


6.5 Printing a methods list

Proceed as follows to print a list of all the User or METTLER methods stored in the titra-tor:- Press Method to open the method editor.- The Methods menu appears with the following items:


- Select "User methods" using the arrow keys if you want to print a list of User meth-ods.

- Select "METTLER methods" if you want to print a list of the METTLER TOLEDO pre-defined methods.

- Press Print to print the list of the methods.- You must confirm the next screen by pressing OK before the print job is started.

6.6 Printing a method

To print the parameters of a method, you must first select the desired method.- Press Method to open the method editor.

Selecting a method using the method IDYou can enter the method ID of an existing User method in the Method ID box (User method or METTLER method).- Press Print to print the parameters of the selected method.

Selecting a method from the methods list If you do not know the Method ID of the method you want to delete, you can select the method from a list using its name and method ID: - Select "User methods" using the arrow keys if you want to select a self-defined me-

thod.- Select "METTLER methods" if you want to select one of the predefined METTLER

TOLEDO methods.- Press OK to confirm your selection- On the screen that follows you can select the desired method using its name and

method ID from a list. - Press Print to print the functions and parameters of the selected method on the

printer.- You must confirm the next screen by pressing OK before the print job is started.

Method


Method ID Title Samples Method typeControl param.

Sensor Titrant / Standard

Result

920 Acid content EP acidse.g. HCl

EP titrationEP = pH 7.0

DG115 NaOH0.1 mol/L /KHP

HCl (%)M = 36.458; z=1

921 Base content EP basee.g. NaOH

EP titrationEP = pH 7.0

DG115 HCl0.1 mol/L /THAM

NaOH (%)M = 40.00; z=1

926 pH measure measure DG115 measured value pH

6.7 Predefined methods

Series


7. Series

Pressing the Series key opens the Series menu. From this menu you can perform any type of series determination (sample, titer or blanc value).An Important prerequisite for performing an analysis with the titrator is that you have properly set up all the necessary resources in the setup menu (See "5 Setup") and that the methods you need are available. You can create or modify the methods using the method editor (See "6 Methods").Furthermore you have the possibility to automatize your series determination by using a Rondolino sample changer. Up to nine samples can be analyzed automatically. It is required to choose „Rondolino“ as titration stand if you use a Rondolino sample changer. (See „5.10 Titration stand“)

7.1 Starting a sample determination using the Series key

- Press the Series key.- The message: „Statistics memory: Memory is cleared“ is displayed. Confirm with

Proceed.- Under "Determination", select either "Sample", "Titer" or "Blank value", depending on

the type of determination you want to perform, using Modify.- Select "Method ID" using the arrow keys. - Press Modify.- Select "User methods" if you want to select a self-defined method.- Select "METTLER methods", if you want to select one of the METTLER TOLEDO prede-

fined methods.- Press OK to confirm your selection.- In the display that follows you can select the desired method from a list using its

name and its method ID. - Press OK to confirm your selection.- Select „Number of samples“ using the arrow keys and enter the desired number of

samples (min. 1; max. 9) using the keypad.- Press OK to confirm your selection.Depending on the settings of the selected method a list of the samples and their related parameters is displayed.- Select the sample using the arrow keys.- Press Modify.- Enter the value of the respective parameter.- Press OK to confirm your selection.- Press Start to perform the selected method (you can press Modify to select another

method or press List to adept the number of the samples).- The analyses are performed according to the instructions given in the method used.

• You can enter the method ID of an existing method (User method or METTLER me-thod) in the "Method ID" box and then confirm this by pressing Start.

Series


7.2 Starting a titer determination using the Series key


Proceed.- Under "Determination", select "Titer" using Modify. - Select "Method ID" using the arrow keys.- Press Modify.- In the menu that follows, select either User methods or METTLER methods and con-

firm your selection by pressing OK.- Select a method that uses the titrant whose titer you want to determine, and confirm

your selection by pressing OK.- Select „Number of samples“ using the arrow keys and enter the desired number of

samples (min. 1; max. 9) using the keypad.- Press OK to confirm your selection.Depending on the settings of the selected method a list of the samples and their related parameters is displayed.- Select the sample using the arrow keys.- Press Modify.- Enter the value of the respective parameter.- Press OK to confirm your selection.- Press Start to start the titer determination.- The titer determination is performed according to the instructions given in the me-

thod. (See "6.3 Modifying a method")- A report is sent to the printer, depending on the settings defined in the method.- After the determination you can view the statistics of the current sample series by

pressing Stat..- If the titer is within the defined limits, you can accept the result of the titer determinati-

on (or the mean result if you have performed the titer determination several times) by pressing Save.


being set to 00-00-0000 and 00:00.

Series


7.3 Starting a blank value determination using the Series key


Proceed.- Under "Determination", select "Blank value " using Modify.- Select "Method ID" using the arrow keys.- Press Modify.- In the menu that follows, select either User methods or METTLER methods, and

confirm your selection by pressing OK.- Select a method that references the blank value that you want to determine and

confirm your selection by pressing OK.- Select „Number of samples“ using the arrow keys and enter the desired number of

samples (min. 1; max. 9) using the keypad.- Press OK to confirm your selection.Depending on the settings of the selected method a list of the samples and their related parameters is displayed.- Press Start to start the blank value determination.- The blank value determination is performed according to the instructions given in the

method. (See "6.3 Modifying a method")- A report is sent to the printer, depending on the settings defined in the method.- You can view the statistics of the current sample series by pressing Stat..- If the blank value is within the defined limits, you can accept the result of the blank

value determination (or the mean result if you have performed the blank value deter-mination several times) by pressing Save. The date and time of the last blank value determination are automatically updated.

- Quit the display that follows by pressing Esc. in order to prevent the date and time being set to 00-00-0000 and 00:00.

Series


Run


8. Analysis (Run)

Pressing the Run key opens the Analysis menu. From this menu, you can perform any type of determination (sample, titer or blank value determination).An Important prerequisite for performing an analysis with the titrator is that you have properly set up all the necessary resources in the setup menu (See "5 Setup") and that the methods you need are available. You can create or modify the methods using the method editor (See "6 Methods").

8.1 Starting a sample determination using the Run key

- Press the Run key.- Under "Determination", select either "Sample", "Titer" or "Blank value", depending on

the type of determination you want to perform, using Modify.- Select "Method ID" using the arrow keys. - Press Modify.- Select "User methods" if you want to select a self-defined method.- Select "METTLER methods", if you want to select one of the METTLER TOLEDO prede-

fined methods.- Press OK to confirm your selection.- In the display that follows you can select the desired method from a list using its

name and its method ID. - Press OK to confirm your selection.- Press Start to perform the selected method (you can press Modify to select another

method or press Series to open the Series menu).- The analysis is performed according to the instructions given in the method used.

• You can enter the method ID of an existing method (User method or METTLER me-thod) in the "Method ID" box and then confirm this by pressing Start.

• You can facilitate starting the three most frequently used methods by defining them as main methods in the Setup menu. The method ID of these main methods then appear on the Home screen and can be started from there by pressing the corre-sponding function key. (See "5.7 Main methods".)

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Run


8.2 Starting a titer determination using the Run key

- Press the Run key.- Under "Determination", select "Titer" using Modify. - Select "Method ID" using the arrow keys.- Press Modify.- In the menu that follows, select either User methods or METTLER methods and con-

firm your selection by pressing OK.- Select a method that uses the titrant whose titer you want to determine, and confirm

your selection by pressing OK.- Press Start to start the titer determination.- The titer determination is performed according to the instructions given in the me-

thod. (See "6.3 Modifying a method")- A report is sent to the printer, depending on the settings defined in the method.- After the determination you can view the statistics of the current sample series by

pressing Stat..- If the titer is within the defined limits, you can accept the result of the titer determinati-

on (or the mean result if you have performed the titer determination several times) by pressing Save.


being set to 00-00-0000 and 00:00.

8.3 Starting a blank value determination using the Run key

- Press the Run key.- Under "Determination", select "Blank value " using Modify.- Select "Method ID" using the arrow keys.- Press Modify.- In the menu that follows, select either User methods or METTLER methods, and con-

firm your selection by pressing OK.- Select a method that references the blank value that you want to determine and con-

firm your selection by pressing OK.- Press Start to start the blank value determination.- The blank value determination is performed according to the instructions given in the

method. (See "6.3 Modifying a method")- A report is sent to the printer, depending on the settings defined in the method.

Run


- You can view the statistics of the current sample series by pressing Stat..- If the blank value is within the defined limits, you can accept the result of the blank

value determination (or the mean result if you have performed the blank value deter-mination several times) by pressing Save. The date and time of the last blank value determination are automatically updated.

- Quit the display that follows by pressing Esc. in order to prevent the date and time being set to 00-00-0000 and 00:00.

Run


Performing a titration


9. Performing a titration

This chapter explains the general procedure for performing a titration method, using a simple acid-base titration as an example. The method for determining the acid content is stored as a METTLER method under the method ID 900 entitled "Acid Content EP". The purpose of the method is to determine the acid content of an aqueous solution using an endpoint titration.The following determination is performed:

approx. 5 g of an HCl solution (conc. 0.1 mol/L) is titrated with NaOH (conc. 0.1 mol/L).

9.1 Preparations

– Make up solutions of hydrochloric acid and sodium hydroxide in the concentrations given above. The sodium hydroxide must be free of carbonate.

– Prepare the burette for the sodium hydroxide and attach it to the titrator (see "3.2.2 Installing the burette").

– To protect the sodium hydroxide from CO2, mount a drying tube on the burette holder of the NaOH bottle.

– Attach a titration beaker to the titration stand and insert the NaOH dispensing tube into one of the smaller openings of the titration head.

– Connect the stirrer to the appropriate connection, and check that the stirrer is cor-rectly configured under the settings for the titration stand. (See "5.10 Titration stand")

If you use an overhead stirrer, attach it to the titration stand. If you use a magnetic stirrer, make sure that the titration arm is swiveled in and that

the titration beaker is positioned above the magnetic stirrer.– Fill the burette (see next page).

• A printer and/or a balance can be optionally connected to the titrator. (See "5.4 Peripherals")



9.1.1 Filling the burette (rinsing)

- Press the Burette key.- The menu of the Burette auxiliary function menu appears.

- Select "Rinse" using the arrow keys and press Start to start the rinsing process.

- The screen displays "Rinse" during the rinsing process.- The piston of the burette is moved upward and the air is forced out. A small volume

of sodium hydroxide solution is sucked in when the piston returns to its initial starting position.

- The main menu of the Burette auxiliary function appears on the display again:

- Repeat the rinsing process twice to make sure that the burette is completely filled and the tubing has been well rinsed.

– Press the Reset key. The start screen appears.

9.2 Performing titration method 920

– Connect the pH electrode to the sensor input "mV /pH" at the back of the titrator using the Lemo cable, and insert it into one of the larger openings of the titration stand.

– Then remove the titration beaker and rinse the dispensing tube and the electrode with deionized water. (If you are using an overhead stirrer, rinse the overhead stirrer as well.)

– Fill a titration beaker with approx. 50 mL deionized water, pipette in approx. 5 g of the hydrochloric acid solution and attach the beaker to the titration head.

• Make sure that the dispensing tube of the burette is attached to the titration stand and is inserted in the titration beaker.

- Press the Run key.

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- The Analysis start menu appears.- If the ID of method 900 is not shown under "Method ID", select the entry using the

arrow keys, and enter "900" using the keypad.- "Sample" must be selected under "Determination". If this is not the case, select "De-

termination" and change the setting to "Sample" using Modify.

- Press Start.

- The Request sample display appears.

- Now enter the weight of the sample (for this example, approx. 5g) using the keypad.

- If a balance is connected to the titrator and is configured in the Setup menu, you can also transfer the sample weight directly from the balance.

- Press Balance in the Request sample display.

- The sample weight determined by the balance is shown on the display.- Pressing OK transfers the weight from the balance for your analysis.

- Press OK or the Run key to start the titration.��



- An appropriate message appears on the display while the burette is being filled.

- After the burette has been filled, the sample is stirred for the duration of the mixing time to make sure the solution is homogeneous.

The duration of the mixing time can be defined in the method. (See "6 Methods (Method)")

- The titration begins.- During the determination, the following information is shown on the display: • The volume already dispensed in [mL] • The measured potential in [mV] • The measured pH of the solution • The signal symbolized by the varying black bar. The bar indicates the

limit below which the measured value of the potential is accepted.

- During the titration, you can display the titration curve (measured potential plotted against dispensed volume) using Graph. A line shows the zero point of the y-axis (0 mV/ pH 7).

- You can return to the measured values display by pressing Values.- You can terminate the titration by pressing Abort. Values already measured are ho-

wever not lost.

- At the end of the titration, the result is shown on the display and at the same time the analysis report is sent to the printer.

- If you confirm the result by pressing OK, the start screen of the Analysis menu ap-pears.

- As long as the printout of the report on the printer is still in progress, the message "Reporting" appears on the display; the titrator does not return to the start screen of the Analysis menu until the printout is finished.

- If you perform the determination several times, you can display the statistical evalua-tion of your results by pressing Stat..

- You can view the result of your titration using the Results auxiliary function. (See "10.6 Results")



- If you have not set up a printer in Setup, an error message is given at the end of the analysis, which you must confirm by pressing Abort.

- The result is then shown on the display.- If you have connected a printer, the following report is printed:

=================================================================METTLER TOLEDO DLXX-----------------------------------------------------------------SNR ----- V1.00 ID26-01-2005 15:21 User Meyer=================================================================

EP titration-----------------------------------------------------------------Method ID 920 Title Acid content EP25-01-2005 12:05 Author MeyerTiter 1.03523-----------------------------------------------------------------Titrant NaOH 0.1 Sensor DG115Conz. [mol/L] 0.1 Unit pH-----------------------------------------------------------------Sample 1Sample ID HClEntry type MassMass [g] 5.2354Minimum [g] 1.2Maximum [g] 6.5Density [g/mL] 1.0Mol.m. [g/mol] 36.46Equival. number z 1Predis. [mL] 1.000 Mixing time [s] 3 Init.pot. [mV] 275.3Consumption [mL] 5.224 Duration [min:s] 2:00Temp. [°C] 25.0Abort All points reachedBlank [mmol] 0.00Back value [mmol] 0.00

EP Volume [mL] Potential [pH]-----------------------------------------------------------------1 5.208 7.00

Result EP Calculat. Value Unit-----------------------------------------------------------------1 1 Cont. 0.363 [%]

Statistics reportResult n x s Unit srel----------------------------------------------------------------- 1 1 0.363 0.000 [%] 0.00 [%]

26-01-2005 15:21 Page 1

EP titration26-01-2005 15:21-----------------------------------------------------------------Method ID 920 Sample No. 125-01-2005 12:05 Sample ID HCl-----------------------------------------------------------------

26-01-2005 15:21 Page 2



Auxiliary functions (Info, Sensor, Stirrer, Burette, Report, Results)


10. Auxiliary functions (Info, Sensor, Stirrer, Bu-rette, Report, Results)

The pictogram keys for the auxiliary functions enable you to open different titrator func-tions that are not involved in performing the actual analysis, but which can support or extend it.

• The auxiliary function keys are locked during an analysis that is running and the corresponding menus cannot be opened.

10.1 Information menu

You can open the Info menu by pressing the pictogram key i.

The following functions can then be opened:

System informationThis function lets you view the system information for the titrator.

System testThis function lets you test the titrator hardware and any connected peripheral instruments, such as a balance or a printer.(See "11.2 Hardware tests")

Service(This menu can only be accessed by service specialists.)

10.2 Sensor

If you press the Sensor key, the list of sensors stored in the titrator appears.

From this menu you can now select a sensor and

• with a temperature sensor, measure the temperature of a solution;• with a pH, mV, ISE or polarized sensor, measure the potential of a solution;• for a pH, or ISE sensor, perform a sensor calibration;• for a pH, or ISE sensor, perform a sensor test.

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10.2.1 Measuring temperature

To measure the temperature of a solution:

- Press the Sensor key.- Select "PT1000" for the temperature sensor using the arrow keys, and press Modify.- Press Start to start the measurement.- The measured signal is shown on the display.- You can terminate the measurement by pressing Stop.

• You can also start the measurement directly by pressing Start after selecting the temperature sensor. The setting last used is used for the stirrer speed.

• You can change the temperature unit in the "Settings" setup menu. (See "5.9.4 Defin-ing the temperature unit")

10.2.2 Measuring potential

You can measure the potential of a solution using the appropriate sensors in mV, pH, or pX:

- Press the Sensor key.- Select the desired sensor for the measurements using the arrow keys and press

Modify.- For polarized sensors, select "Pol. current [µA]" and enter the polarization current in

[µA].- Select "Speed [%]" and enter the desired speed for the stirrer in [%].- For pH and pX sensors, select "Temp. sensor" and using Modify select either "Ma-

nual" for manual temperature entry or "PT1000" for the measurement of temperature using a temperature sensor.

- If you have selected manual temperature entry, for pH and pX sensors enter the tem-perature in the given unit under "Temperature".

- Press Start to perform the measurement.



• You can also start the measurement by pressing Start directly after selecting the sensor without changing the settings beforehand with Modify. The settings last used are then adopted.

10.2.3 Calibrating a sensor

To perform a sensor calibration for a pH or ISE sensor:

- Press the Sensor key. - Select the sensor you want to calibrate using the arrow keys.- Press Modify.- Press Calib.

The calibration is performed in the same way as described in the setup section for sensor calibration from the setup menu. (See "5.3.5 Sensor calibration from the sensor setup menu")

10.2.4 Testing a sensor

To perform a sensor test for a pH or ISE sensor:

- Press the Sensor key. - Select the sensor you want to calibrate using the arrow keys.- Press Modify.- Press Test.The sensor test is performed in the same way as described in the setup section for sensor calibration from the setup menu. (See "5.3.6 Sensor test from the sensor setup menu")

10.3 Stirrer

If you press the Stirrer key, the Stirrer menu appears.This menu lets you switch a stirrer on and off (an overhead or a magnetic stirrer) and change its speed:

- Press the Stirrer key to open the Stirrer menu.- Select "Speed [%]" and enter the desired stirrer speed in [%].- Press Start to switch on the stirrer.- Press Stop to switch off the stirrer.

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• The Stirrer auxiliary function always refers to the stirrer that was selected in the "Titra-tion stand" setup menu. To change from an overhead stirrer to a magnetic stirrer, you must make the corresponding settings in the setup menu. (See "5.10 Titration stand")

10.4 Burette

If you press the Burette key, the Burette auxiliary functions menu appears.

You can select and execute the following functions:

• Rinse the burette.• Rinse the tip of the burette.• Dispense a defined volume.• Perform a manual titration.

10.4.1 Rinsing the burette

- Press Burette to open the burette auxiliary functions.- "Rinse" is already selected.- Press Modify to change the settings for the rinsing process. - Select "Fill rate [%]" to change the speed at which the burette is filled. Enter a value

for the fill rate.- Select "No. of rinse cycles" and enter how many times you want to empty and fill the

burette.- Press Start to start the rinsing process. The titrator completely empties and fills the

burette each cycle. The piston of the burette is moved to below its zero position so that air bubbles possibly present around the stopcock are also removed.

• A lower fill rate is recommended for reagents of high viscosity in order to prevent air being sucked in.

• Make sure in rinsing processes that the waste container under the dispensing tube is sufficiently large.

• You can also start the rinsing process at the rinsing rate shown by selecting "Rinse" and pressing Start.

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10.4.2 Rinsing the tip

- Press Burette to open the Burette auxiliary functions.- Select the parameter "Rinse tip" using the arrow keys.- Press Start to start the rinsing process.- 5% of the burette volume is dispensed to remove possible contaminants from the tip

of the dispensing tube.

• Make sure during the rinsing processes that the waste container under the dispens-ing tube is sufficiently large.

10.4.3 Dispensing

- Press Burette to open the Burette auxiliary functions.- Select "Dispense" using the arrow keys.- Press Modify to change the settings for the dispensing process.- Under "Volume", enter the volume in [mL] that you want to dispense.- Select "Burette", and using Modify, select the volume of the burette you are using

(1 mL, 5 mL, 10 mL or 20 mL).- Select "Fill rate [%]" to change the speed at which the burette is filled. Enter a value

for the fill rate.- Press Start to start the rinsing process.

• A lower fill rate is recommended for reagents of high viscosity in order to prevent air being sucked in.

• You can also start the dispensing process by selecting "Dispense" and pressing Start. The settings last used are adopted for the fill rate and the burette volume.

10.4.4 Manual titration

- Press Setup to open the setup menu.- Select "Titrants" using the arrow keys and press OK to confirm. The list of the titrants

stored in the titrator appears.- Select the titrant and press Modify. - Confirm the selection with Save.- Press Esc to change to the setup menu.- Select "Sensors" using the arrow keys and press OK to confirm. The list of the sen-

sors stored in the titrator appears.- Select the desired sensor and press Modify. - Confirm the selection with Save.- Press Burette to open the Burette auxiliary functions menu.



- Select "Man. Titration" using the arrow keys.- Press Start to perform a manual titration.- By pressing the numeric input keys (0 to 9) you define the volume of the increment

you want to dispens.

• The volume of the manual dispensed increments depends both on the volume of the burette used and the numeric key. Press "1" to dispens the lowest volume depending on the burette used up to "0" to dispens the highest volume.

The following table displays the volume of increments in mL for different burette sizes.

Key Increment [mL]1 mL burette

Increment [mL]5 mL burette



1 0.0001*) 0.0005*) 0.001 0.002

2 0.0002*) 0.001 0.002 0.004

3 0.0005*) 0.002 0.005 0.01

4 0.001 0.005 0.01 0.02

5 0.002 0.01 0.02 0.05

6 0.005 0.025 0.05 0.1

7 0.01 0.05 0.1 0.2

8 0.02 0.1 0.2 0.5

9 0.05 0.25 0.5 1

0 0.1 0.5 1 2

*) Rounded values are indicated. (Three decimal places)

• A continuous titration can be performed by permanently pressing a numeric key. However it is not possible to dispense a defined volume. Therefore a manual titration is conditionally recommendable.



10.5 Report

If you press the Report key, Report auxiliary functions menu appears. This enables you to print additional reports of the determination or measurement you performed last.

- Press Report to open the Report menu.- Using the arrow keys, select "Results" and with Modify select either "Short" or "GLP".

(GLP stands for "Good Laboratory Practice" and means the maximum possible detail of the results)

- Using the arrow keys, select "Meas. val. table" and with Modify select "Yes" or "No", depending on whether the report should contain the measured results in table form or not.

- Using the arrow keys, select "E-V curve" and with Modify select "Yes" or "No", de-pending on whether the report should contain a titration curve (measured potential plotted against consumed volume) or not.

- Using the arrow keys, select "dE/dV curve" and with Modify select "Yes" or "No", depending on whether the report should contain the 1st derivative of the titration as a curve or not.

• If no analyses or measurement results are stored in the titrator, only the message "No results" appears on opening the Report menu and you cannot perform any set-tings in this menu.

• "Meas. val. table", "E-V curve" and "dE/dV curve" are not available for reports of measurements.

10.6 Results

Pressing Results leads you into the menu of the Results auxiliary function. This function enables you to

• view and print the results of a series of determinations or measurements;• view and modify the statistics of a series of determinations or measurements;• terminate a series of determinations or measurements .

• If no analyses or measurement results are stored in the titrator, only the message "No results" appears on opening the Results menu and you cannot perform any set-tings in this menu.

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10.6.1 Displaying and printing results

- Press Results.- Select "All results" using the arrow keys and confirm with OK.- In the menu that follows, under "Number of samples" you can select the number of

results stored in the titrator", and under "Method", the method used for the current sample series.

- Select "Results samp. no." and enter the sample number of the sample whose result you want to view or print.

- Press Print to print the result.- Press Show to present the result on the display.

• If no analyses or measurement results are stored in the titrator, the message "No results" appears on opening the Results menu, and you can not perform any settings in this menu.

• To select an individual result from a list of all the stored results, select "Number of samples" and press List. You can then select any result using its sample number, and view it by pressing Show.

• To print the method with which the sample series was performed, select "Method" and press Print.

• While the results are shown on the display, you can view the following or the pre-vious results using Next and Back.

10.6.2 Statistics

In the Statistics menu you can view and print a statistical evaluation of the results of your current sample series. A sample series is always a series of analyses with the same (un-changed) method. It does not matter whether the analyses consist of a series of blank value determinations, titer determinations, or sample determinations.You can exclude individual samples from the statistical evaluation by deleting them from the statistics memory. You can still view deleted samples in a list of the deleted results and return them to the statistics if desired.



Displaying or printing a sample series

- Press Results to open the Results menu.- Select "Statistics" using the arrow keys and press OK to confirm.- The statistics of the current sample series are shown on the display.- For each calculation defined in the method used (R1 to R3), the display shows • the number of results (n) used for the statistics, • the mean value of the calculation results (x), • the standard deviation (s), • and the relative standard deviation (srel).- Press Print to print the statistics.- In the menu that follows you can define whether or not the statistics are to be printed

with the individual results.- Select "With results" and using Modify, set "Yes" or "No".- Press Start to start the print task. - For blank values and titer determinations, you can transfer the mean value of the

determinations performed into the setup using Save.

Removing results from the statistics

- Press Results to open the Results menu.- Select "Statistics" using the arrow keys and press OK to confirm.- The statistics of the current sample series are shown on the display.- Press Modify to make changes to the statistics.- Select "Active samples" and press List.- In the list of active samples that follows, you can select the desired result and view it

using Show.- If you press Del., the result displayed is deleted from the statistical evaluation and

stored under "Deleted samples".- If you press Next and Back you can view the next or the previous result on the list

and if necessary remove it from the statistics using Del..

• To select an individual result using its sample number, select "Results samp. no." and enter the sample number using the keypad. You can view the result by pressing Show and then if necessary remove it from the statistics using Del..



Adding a result to the statistics

- Press Results to open the Results menu.- Select "Statistics" using the arrow keys and confirm with OK.- The statistics of the current sample series are shown on the display.- Press Modify to make changes to the statistics.- Select "Deleted samples" and press List.- In the list of deleted samples that follows, you can select the desired result and view

it by pressing Show.- If you press Add, the result displayed is added to the statistical evaluation and remo-

ved from under "Deleted samples".- If you press Next and Back, you can view the next or the previous result on the list

and if necessary return it to the statistics by pressing Add.

• To select an individual result using its sample number, select "Results samp. no." and enter the sample number using the keyboard. You can view the result by pres-sing Show and then if necessary add it to the statistics with Add.

10.6.3 Terminating the series

The "Terminate series" menu enables you to terminate the current sample series. All the results stored in the titrator and the statistics memory are deleted.

- Press Results to open the Results menu.- Select "Terminate series" using the arrow keys and confirm with OK. - Answer the following question "End series?" with "Yes".- The results of the current sample series and statistics memory are now deleted.

• If no analyses or measurement results are stored in the titrator, the message „No results" appears on opening the Results menu and you can not perform any settings in this menu.

Error messages, malfunctions and hardware tests


11. Error messages, malfunctions and hardware tests

11.1 Global errors and malfunctions

The following is summary of errors and malfunctions that the titrator does not display. In many cases it may help you to rectify a problem yourself without assistance from METTLER TOLEDO Service (in the table written as "Service").Some malfunctions can be investigated using the hardware test (see Section 11.2) before you contact Service.

Error Possible cause Action to be taken

No display on the titrator. Titrator is not connected to the power supply.

Connect to power supply, otherwise contact Service.

Several points of the display are missing.

Contact Service.

The display and the keys pressed do not match.

Contact Service.

Transfer error to attached peripheral.

Device is faulty or switched off.

Check whether the attached device is functioning properly.

Instrument (printer, balance) does not react.

Instrument is not switched on; wrong settings and/or configuration (switch settings wrong); wrong cable.

Switch on instrument;settings and configuration must match.

TTL inputs or outputs are not functioning properly.

Inputs and/or outputs are faulty.

Check inputs/outputs.

Burette and stopcock do not go to the zero position on switching on.

Burette drive faulty. Contact Service.

Magnetic stirrer bar does not turn.

Cable of the magnetic stirrer is not properly plugged in; wrong magnetic stirrer bar.

Check magnetic stirrer; re-place magnetic stirrer; use the stirrer bar supplied.

Wrong potential values. Electrode is faulty or dirty. Check electrode (see elec-trode data sheet) or use new electrode.

No dispensing, titrant is discharged from stopcock or piston.

Burette tip is blocked. Clean burette tip.



11.2 Hardware tests

The System test menu includes different functions to test the titrator hardware and any con-nected peripheral instruments such as a balance or a printer.Proceed as follows to open the System test menu:

- Press i to open the Info menu i.- Select "System test" using the arrow keys and then press OK to confirm.- You can now open the User interface, Comm. interface, Auxiliary I/O and pH input

menus.

11.2.1 User interface

- Press i to open the Info menu.- Select "System test" using the arrow keys and press OK to confirm.- Select "User interface" and press OK to confirm.

You can now select and open the following functions by using the arrow keys and pressing OK.

Screen testThe screen alternately shows a full and then an empty display. This enables you to iden-tify faulty pixels on the display. The test mode automatically switches off after about 10 seconds.

Keypad testAs soon as you press a key, a number code assigned to this key appears so that you can identify a faulty key (see following table).

- You can quit the keypad test by pressing Esc.

Key codes

KeyCode Key Code Key CodeReset 101 Run 114 3 51

i 105 F1 650 4 52

Stirrer 116 F2 651 5 53

Report 112 F3 652 6 54

Sensor 110 ∇ 607 7 55

Burette 98 Δ 606 8 56

Results 117 Shift 0 9 57

Setup 115 0 48 Del 8

Method 109 1 49 . 46

Series 97 2 50



Beeper testYou can check the internal beeper: press Start to switch it on, and Stop to switch it off.

11.2.2 Communication interfaces

- Press i to open the Information menu i.- Select "System test" using the arrow keys and then press OK to confirm.- Select "Comm. interface" and then press OK to confirm.You can now select and open the following functions by using the arrow keys and pressing OK.

Interface testTo test the RS-232C interfaces, you must plug the test connector 51107288 into the bal-ance or RS-P42-interface.

To test the Centronics interface, you must plug the Centronics cable into the Centronics interface and plug the test plug 51107287 into the Centronics socket of the cable.

- Then select the interface you want to test using the arrow keys and press Start.- After the test, the message "Test successful" or "Test failed" appears on the display.- Press OK to return to the menu.

Printer test (GA42, RS-P42, HP)The printer must be connected. If the error message "Printer: no connection" appears, press Esc to cancel the error message - If you press "OK", the titrator again tries to establish communications with the printer.

- After the test, the message "Test successful" or "Test failed" appears on the display.- If the test was successful, the letters and characters available in the titrator are

printed.



Balance testTo perform the balance test, a weight must first be placed on the balance. When you press Start, the weight shown on the balance must appear on the titrator display.

11.2.3 Auxiliary I/O

- Press i to open the Information menu i.- Select "System test" using the arrow keys and then press OK to confirm.- Select "Auxiliary I/O" and then press OK to confirm.You can now select the following functions using the arrow keys and open them by pres-sing OK.

TTL-I/O- Before starting the test, plug the test plug 51107723 into the TTL-I/O interface.After the test, the message "Test successful" or "Test failed" appears on the display.

Overhead stirrerThis test allows you to check whether the overhead stirrer operates properly at different speeds.- Select "Overhead stirrer" using the arrow keys and then press OK to confirm.- On the display that follows, you can enter a speed and switch on the overhead stirrer

by pressing Start.- Press Stop to switch off the stirrer again.

Magnetic stirrerThis test allows you to check whether the magnetic stirrer operates properly at different speeds. - Select "Magnetic stirrer" using the arrow keys and then press OK to confirm.- On the display that follows, you can enter a speed and switch on the magnetic stirrer

by pressing Start.- Press Stop to switch off the stirrer again.



11.2.4 pH input value

This test allows you to check whether the pH input of the titrator is properly adjusted. - Select "pH input" using the arrow keys and then press OK to confirm.- You are requested to apply a voltage of 0 mV at the input for the mV/pH electrode.- Press OK to continue the test.- A value of 32700 ± 5% must appear on the display.- Press OK.- A value of 0.00 mV must be displayed.



Optional accessories and maintenance


Connection cable for METTLER TO-LEDO balance AE with option 01100059759

Connection cable for SARTORIUS balances51190363

Connection cable for METTLER TOLEDO balances AG, AB, PB, PG (LC interface)00229065

Connection cable for METTLER TOLEDO balances AM, PM, AT00229029

Triaxial cable SC-LEMO(Length: 60 cm) 00089601 (Length: 100 cm) 00089602(Length: 160 cm) 51108034

Compact stirrer51109150

Propeller stirrer (2x)00101229

Interchangeable burette1 mL DV10015 mL DV100510 mL DV101020 mL DV1020

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HP-compatible printeron request

PrinterRS-P42

Connection cable forRS-P42 printer51190362

Phototrode (incl. power supply unit) for color-indicated titrationsTransmission measurement at 555, 660, 520, 620, 590 nmDP5

Adapter cable (DIN-LEMO) for at-tachment of electrodes or pho-totrode with DIN connector to the titrator00089600

Pt1000 temperature sensorDT1000

LEMO cable connector (4 pin) for temperature sensors (non-METTLER TOLEDO)00088321

Connection cable for METTLER TO-LEDO balances AB, AX, PB, PG-S (RS9 interface)11101051

12. Optional accessories and maintenance

12.1 Optional accessories



Sensors

DG101-SCCombined pH electrode for small volumes in small titration vessels in aqueous solutions

DG111-SCCombined pH electrode for titrations in aqueous solutions

DG113-SCCombined glass electrode with movable sleeve frit for titrations in nonaqueous solutions

DG114-SCCombined glass electrode with mov-able sleeve for titrations in aqueous solutions

DM140-SCCombined platinum ring electrode for redox titrations

DM141-SCCombined silver ring electrode for argentometric titrations

DM143-SCDouble-pin platinum electrode

Ion selective electrodes

Fluoride ISE 51089931DX219

Potassium ISE 51089932DX239

Calcium ISE 51107683DX240

Chloride ISE 51089933DX235

Nitrate ISE 51089934DX262

Ammonium ISE 51107679DX218

Bromide ISE 51107671DX280

Connection cable between DL15/DL22F&B/DL28, T50/T70/T90 titrator and Rondolino(Cable included in Rondolino deli-very.)51190589



12.2 Service and maintenance

12.2.1 Cleaning

- The housing of the titrator can be cleaned with a cloth moistened with alcohol.- To clean the titration stand you can disassemble it into its parts and clean these

individually (See 3.2.1 Attaching the titration stand to the titrator).

12.2.2 Disposal

In conformance with the European Directive 2002/96/ EC on Waste Electrical and Electro-nic Equipment (WEEE) this device may not be disposed of in domestic waste. This also applies to countries outside the EU, per their specific requirements.Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment.If you have any questions, please contact the responsible authority or the distributor from which you purchased this device.Should this device be passed on to other parties (for private or professional use), the content of this regulation must also be related. Thank you for your contribution to environmental protection.



Technical data


13. Technical data

Power supply Voltage range 100 – 240 VAC ±10%Frequency 50/60 HzPower consumption 45 VAOutput voltage 24 VDC 0.8 A / 5 VDC 1.2 A

Dimensions Width 240 mmDepth 305 mmHeight 370 mmWeight approx. 5 kg

Materials Titrator housing polypropyleneTitration stand polypropylene Keyboard housing polyesterKeyboard film polyesterSpacing ring polypropyleneClamping ring polypropyleneThreaded ring polypropylene

Ambient conditions Ambient temperature +5 °C to +40 °C Atmospheric humidity max. 80% at 40 °CUse Use indoorsOvervoltage category IIPollution degree 2

pH/mV input Triaxial socketRange -1950…+1950 mVResolution 0.1 mV Max. permissible error 2 mVInput resistance >1012 Ω

Polarized input Triaxial socketPol. current 0.2…10 µA Resolution 0.1 µA Max. permissible error 0.3 µAMeasurement range 0…1950 mVResolution 0.1 mV Max. permissible error 2 mV

Pt1000 4 pin socket (Lemo)Measurement range 0…130 °C Resolution 0.1 °C Max. permissible error 0.2 °C

Magnetic stirrer output 8-pole socket (mini DIN)Motor stepper motor (AC)Speed software-controlled (1-100%)Power consumption 2 WMax. speed 1050 rpm (at 70%)

Overhead stirrer output 5-pole socket (mini DIN) Motor DC motorSpeed software-controlled (1-100%)Voltage range 0 to 18 V DC (max. 300 mA)

Technical data


Connection possibilities for peripheral instruments

Balance Connection by means of RS232C interface (9-pin D-Sub plug)for METTLER TOLEDO and SARTORIUS balances.

Printer Connection by means of RS232C interface (9-pin D-Sub plug)for RS-P42 und GA 42 printers.Connection by means of Centronics interface (25 pin D-Sub socket) for HP compatible printers with parallel interface.

Burette drive Drive Stepper motorResolution 1/10000 of the burette volumeMax. permissible error At 10% 15 µm

At 30% 15 µmAt 50% 25 µmAt100% 50 µm

Filling time minimum 20 s(rate can be set between 10 and 100%)

Discharge time minimum 20 sInterchangeable burettes Volume 1, 5, 10 und 20 mL

Max. permissible error(drive and burette)

Acc. to ISO 8655-3 (2002)

Materials that come into contact with the titrant

fluoroplastic, borosilicate glass, ceramics

Magnetic stirrerr Type Stepper motorMax. speed 1050 rpmPower consumption 2 W

Overhead stirrer Type DC motorMax. speed 3800 rpmPower consumption 6 W

Display LCD 6 lines, backlitLanguages German, English, French, Spanish, Italian, Russian

User data memory User methods max. 30Titrants max. 30Standards max. 20Blank values max. 20Sensors max. 20

RS-P42 Interface Baud rate 1200 baud

Parity noData bit 8Stop bit 2Handshake off

Technical data


RS232C connector (balance/GA42/computer)

Data to titrator Data from titrator Handshake from titrator ready for operation Signal ground, galvanically coupled to titrator electronics

TTL I/O socket

In TTL; short circuit proof; pulse �150 ms (the input signal must be at least 150 ms for the titrator) Out Open collector • Vce max. = 24 V • Ic max. = 20 mA GND Signal ground, galvanically coupled to titrator electronics

Centronics socket

Data ready

Data transferred Printer busy End of paper Printer active Printer error Automatic line feed Printer initializing printer selected

Signal ground, galvanically connected to titrator electronics

�470�� +12 V

RxD (In)TxD (Out)DTRGND

2345

1

2

9

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876

12345678

IN1IN2OUT1OUT2OUT3OUT4

GND5

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1

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Technical data


TTL interface description

1. Basics

The TTL interface of the titrator is used to communicate with external devices via several signals. Not only the Rondolino sample changer can be controlled by using the interface but also several third party devices ( e.g. Kjeldahl distillation units, pumps, etc.)

2. Hardware

The interface consists of 4 output lines (Out1, Out2, Out3, Out4) and 2 inputs (In1, In2). They are provided on a 9 pin D-Sub connector using the following scheme:

Signal In1 In2 Out1 Out2 Out3 Out4 Ground

Pin 1 2 3 4 5 6 7

3. Functionality

3.1 Signals providing sample handling

3.1.1 Out2This signal is activated on initializing a titration. Its rests active until return to the home state. On handling a sample series using Rondolino a follwing sample must be initialized within 1 second, otherwise Rondolino returns to ist home position (beaker 0).

The signal Out2 is always set, irrespective of the selected titration stand setting.

3.1.2 Out4An active pulse of about 200ms on Out4 after initialization of a titration indicates a request of a ready signal on In1. On handling a series using a Rondolino this pulse raises about 600ms after activation of Out2, otherwise it raises after input of the sample data is done by the user.

The signal Out4 will only be activated if selection of titration stand setting ist Rondolino or External.

3.1.3 In1After the pulse on Out4 has raised, the titrator expects the activation of signal In1. This will be done by Rondolino or an external titration stand, declaring the sample is now ready to be analyzed. Using Rondolino this means the beaker is reached an dipped in. In1 rests active till a following activation on Out1.

The signal In1 will only be expected if selection of titration stand setting ist Rondolino or External.

3.1.4 Out1The start of the titation in the inner sense is indicated by a pulse of 200ms on Out1. At this time the stirrer will be started an the mixing time starts counting down.

The signal Out2 is always set, regardless of the selected titration stand setting.

Technical data


3.1.5 Illustrations

The following illustration shows the above described sequence of signals handling a Rondolino series of 3 samples.

The following illustration shows some details of the one above. On the left side it can be seen, that 600ms after activa-tion of Out2 a pulse of 200ms raises on Out4, by which Rondolino starts moving to the next position. The arrival of this position is indicated after about 8s by activating In1. By this the titrator is stimulated to start titration and to raise a pulse on Out 1. Seeing this pulse on Out1 Rondolino deactivates In1.

Technical data


The following sample shows a sequence of signals using an external titration stand. After activation of Out2 the pulse on Out4 does not raise until the user has put the sample data in..

This illustration shows the sequence of signals using an internal titration stand. The pulses on Out4 und In1 do not raise. After the user has put he sample data in, the start of the titration is just indicated by a the pulse on Out1.

Technical data


Declaration of System Validation

We herewith inform you that the products/systems:

DL15, DL22 F&B, DL28

including software and accessories were developed, tested and successfully validated according to the international ISO9001:1994 based Life cycle rules of Mettler-Toledo AG, Analytical. Life cycle checkpoint details were reviewed and approved by the Project Supervisory Group (PSG). The products/sys-tems were tested to meet functional and performance specifications and release criteria at release to shipment. In order to support GLP and validation requirements, we will make the following documents available to an authorized, governmental or regulatory agency for inspection.

• Performance Specifications • Software Specifications • Quality Plan • Project Management System • Test Plan • Customer Requirements • Review Reports • Source Code

Mettler-Toledo AG, Analytical will maintain possession of all documents and their reproductions and may require a non-disclosure agreement to be provided by those requiring access to these documents.

Schwerzenbach, Dr. Bernhard Grob Rolf Truttmann

April 2005 General Manager Manager Business Area Business Unit Analytical Analytical Chemistry

ISO 9001 certificate for METTLER TOLEDOThe Mettler-Toledo AG company, Greifensee, was examined and evaluated in 1991 by the Swiss Association for Quality and Management Systems (SQS), and was awarded the ISO 9001 certificate. This certifies that Met-tler-Toledo AG, Greifensee, has a quality management system that conforms with the international standards of the ISO 9000 series.Repeat audits are carried out by the SQS at intervals to check that the quality management system is operated in the proper manner and is continuously updated in relation to changes brought about.

Technical data


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Technical data


EC - DECLARATION OF CONFORMITYKD-Nr.: 51107749 A Doku-Nr.: 20010111EG-Konformitätserklärung

The undersigned, representing the following manufacturer

Mettler-Toledo GmbH (ANA)Sonnenbergstrasse 74CH-8603 Schwerzenbach, Switzerland

is in conformity with the provisions of the following EC directives (incl. all applicable amendments)

and that the standards have been applied.

01

References of standards for this declaration of conformity, or parts thereof:Harmonized standards of Europe and Switzerland:

IEC/EN61010-1:2001

EN61326:1997+A1:98+A2:01 (class B)EN61326:1997+A1:98+A2:01 (Industrial environments)

Bernhard GrobGeneral Manager

Rolf TruttmannManager Business Area AnaChem

CH-8603 Schwerzenbach09.03.2005

certified model: --

--

Standards for Canada, USA and Australia

CAN/CSA-C22.2 No.1010.1-92UL Std. No. 3101-1

FCC, Part 15, class AAS/NZS4251.1, AS/NZS4252.1

--

Safety standards:

EMC standards:

Metrological standards:

IP standards:

For additional types, see page type code

73/23/EEC Low voltage (LVD)

herewith declares that the product

KF TitratorDL31

Last two digits of the year in which the CE marking was affixed:

Electromagnetic compatibility (EMC) .89/336/EEC

Die Unterzeichnenden vertreten das folgende Unternehmen

hiermit deklarieren wir, dass das Produkt

Modell für Eichprüfung

mit den folgenden EG-Richtlinien (Inkl. Änderungen) übereinstimmt

und die Normen zur Anwendung gelangten.

Die letzten zwei Zahlen des Jahres der Erst-CE-kennzeichnung des Produkts mit dem CE Zeichen.

release: 9.12.2004 / ATL printed: Mrz. 2005Seite 1 von 2

Technical data


Doku-Nr.: 20010111

EC - DECLARATION OF CONFORMITYKD-Nr.: 51107749 AEG-Konformitätserklärung

other types of same construction:

DL 38

Aquastar AQV33

DL15DL22 F&BDL28

Software

Software and Colour

Software and ColourSoftware and ColourSoftware and Colour

Type code

Remarks

Typenschlüssel

andere Typen/Modelle mit der gleichen Konstruktion:

Bemerkungen:

printed: Mrz. 2005released: 9.12.2004 / ATL Seite 2 von 2

Technical data


Appendix


Appendix: Predefined calibration standards

Overview: List of predefined calibration standards for pH sensors

Name of the list

METTLER TOLEDO (Ref. 25°C)

METTLER TOLEDO USA (Ref. 25°C)

DIN (19266) /NIST (Ref. 25°C)

MERCK (Ref. 20°C)

FLUKA (Ref. 20°C)

FISHER (Ref. 25°C)

DIN (19267) (Ref. 25°C)

JIS Z 8802 (Ref. 25°C)

Contained calibration standards

2.00 1.68 1.680 1.00 1.00 1.00 1.09 1.6794.01 4.01 3.557 2.00 2.00 2.00 3.06 4.0084.60 7.00 3.775 3.00 3.00 3.00 4.65 6.8657.00 10.01 4.008 4.00 4.00 4.00 6.79 7.4139.21 6.865 4.66 5.00 5.00 9.23 9.180

10.00 7.416 5.00 6.00 6.00 12.75 10.0111.00 9.184 6.00 7.00 7.00

10.014 6.88 8.00 8.0012.454 7.00 9.00 8.991

8.00 10.00 10.009.00 11.00 11.009.22 12.0010.00 13.0011.0012.0013.00

METTLER TOLEDO EU (Ref. 25°C)

Temperatur°C

2.00 4.01 4.60 7.00 9.21 10.00 11.00

0 2.03 4.01 4.66 7.12 9.52 10.65 11.905 2.02 4.01 4.65 7.09 9.45 10.52 11.7210 2.01 4.00 4.64 7.06 9.38 10.39 11.5415 2.00 4.00 4.63 7.04 9.32 10.26 11.3620 2.00 4.00 4.62 7.02 9.26 10.13 11.1825 2.00 4.01 4.60 7.00 9.21 10.00 11.0030 1.99 4.01 4.61 6.99 9.16 9.87 10.8235 1.99 4.02 4.62 6.98 9.11 9.74 10.6440 1.98 4.03 4.63 6.97 9.06 9.61 10.4645 1.98 4.04 4.64 6.97 9.03 9.48 10.2850 1.98 4.06 4.66 6.97 8.99 9.35 10.1055 1.98 4.08 4.67 6.98 8.96 9.22 9.92 60 1.98 4.10 4.69 6.98 8.93 9.09 9.74 70 1.99 4.16 4.71 7.00 8.88 8.96 9.56 80 2.00 4.22 4.73 7.04 8.83 8.83 9.38 90 2.00 4.30 4.75 7.09 8.79 8.70 9.20 95 2.00 4.35 4.77 7.12 8.77 8.57 9.02

Appendix


METTLER TOLEDO US (Ref. 25°C)

Temperatur°C

1.68 4.01 7.00 10.01

5 1.67 4.01 7.09 10.2510 1.67 4.00 7.06 10.1815 1.67 4.00 7.04 10.1220 1.68 4.00 7.02 10.0625 1.68 4.01 7.00 10.0130 1.68 4.01 6.99 9.9735 1.69 4.02 6.98 9.9340 1.69 4.03 6.97 9.8945 1.70 4.04 6.97 9.8650 1.71 4.06 6.97 9.83

DIN (19266) / NIST (Ref. 25°C)

Temperatur °C

1.680 3.557 3.775 4.008 6.865 7.416 9.184 10.014 12.454

0 1.666 3.577 3.863 4.010 6.984 7.534 9.464 10.317 13.4235 1.668 3.573 3.837 4.004 6.950 7.502 9.392 10.248 13.20710 1.670 3.569 3.819 4.001 6.922 7.474 9.331 10.180 13.00315 1.672 3.565 3.801 4.001 6.900 7.451 9.277 10.121 12.81020 1.676 3.561 3.787 4.003 6.880 7.432 9.228 10.066 12.62725 1.680 3.557 3.775 4.008 6.865 7.416 9.184 10.014 12.45430 1.685 3.553 3.766 4.015 6.853 7.405 9.144 9.970 12.28935 1.691 3.549 3.759 4.026 6.845 7.396 9.110 9.928 12.13340 1.697 3.549 3.754 4.036 6.837 7.389 9.076 9.892 11.98445 1.704 3.544 3.751 4.049 6.834 7.386 9.046 9.856 11.84150 1.712 3.548 3.748 4.064 6.833 7.384 9.018 9.830 11.70555 1.715 3.554 3.750 4.075 6.834 7.382 8.985 9.804 11.57460 1.723 3.560 3.753 4.091 6.836 7.380 8.962 9.778 11.44970 1.743 3.580 3.763 4.126 6.845 7.378 8.921 9.752 11.324 80 1.766 3.609 3.780 4.164 6.859 7.376 8.885 9.726 11.199 90 1.792 3.650 3.802 4.205 6.877 7.374 8.850 9.700 11.074 95 1.806 3.674 3.815 4.227 6.886 7.372 8.833 9.674 10.949

MERCK (Ref. 20°C)

Temperatur °C

1.00 2.00 3.00 4.00 4.66 5.00 6.00 6.88

0 0.96 2.01 3.05 4.05 4.68 5.06 6.04 6.985 0.99 2.01 3.05 4.04 4.68 5.05 6.02 6.9510 0.99 2.01 3.03 4.02 4.67 5.02 6.01 6.9215 0.99 2.00 3.01 4.01 4.67 5.01 6.00 6.9020 1.00 2.00 3.00 4.00 4.66 5.00 6.00 6.8825 1.01 2.00 3.00 4.01 4.66 5.00 6.02 6.8630 1.01 2.00 3.00 4.01 4.66 5.00 6.03 6.8635 1.01 2.00 3.00 4.01 4.66 5.00 6.03 6.8540 1.01 2.00 2.98 4.01 4.67 5.00 6.04 6.8445 1.01 2.00 2.98 4.01 4.67 5.01 6.05 6.8450 1.01 2.00 2.97 4.00 4.68 5.01 6.06 6.8460 1.02 2.00 2.97 4.00 4.69 5.04 6.10 6.8470 1.02 2.01 2.97 4.00 4.70 5.05 6.12 6.8480 1.02 2.01 2.97 4.00 4.71 5.10 6.17 6.8690 1.02 2.01 2.96 4.00 4.72 5.14 6.24 6.88

Appendix


MERCK (Ref. 20°C) (continued)

Temperatur °C

7.00 8.00 9.00 9.22 10.00 11.00 12.00 13.00

0 7.13 8.15 9.24 9.46 10.26 11.45 12.58 13.805 7.07 8.10 9.16 9.40 10.17 11.32 12.41 13.5910 7.05 8.07 9.11 9.33 10.11 11.20 12.26 13.3715 7.02 8.04 9.05 9.28 10.05 11.10 12.10 13.1820 7.00 8.00 9.00 9.22 10.00 11.00 12.00 13.0025 6.98 7.96 8.95 9.18 9.94 10.90 11.88 12.8330 6.98 7.94 8.91 9.14 9.89 10.81 11.72 12.6735 6.96 7.92 8.88 9.10 9.84 10.72 11.67 12.5940 6.95 7.90 8.85 9.07 9.83 10.64 11.54 12.4145 6.95 7.88 8.82 9.04 9.79 10.56 11.44 12.2850 6.95 7.85 8.79 9.01 9.74 10.48 11.33 12.1560 6.96 7.83 8.73 8.96 9.67 10.33 11.04 11.7570 6.96 7.80 8.70 8.93 9.62 10.19 10.90 11.6180 6.97 7.78 8.66 8.89 9.55 10.06 10.70 11.3990 7.00 7.75 8.64 8.85 9.49 9.93 10.48 11.15

FLUKA (Ref. 20°C)

Temperatur °C

1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00

0 0.94 1.99 3.03 4.03 5.05 6.03 7.13 8.18 9.24 10.24 11.45 12.58 13.7110 0.99 1.99 3.02 4.02 5.02 6.01 7.05 8.09 9.11 10.10 11.20 12.26 13.3520 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.0030 1.00 2.00 3.00 4.00 5.00 6.02 6.98 7.94 8.93 9.90 10.81 11.75 12.6640 1.01 2.00 2.99 4.00 5.00 6.04 6.97 7.90 8.86 9.82 10.64 11.53 12.3750 1.01 2.00 2.98 4.00 5.02 6.06 6.96 7.86 8.80 9.75 10.48 11.31 12.1060 1.01 2.00 2.98 4.00 5.04 6.09 6.96 7.82 8.75 9.68 10.33 11.09 11.8470 1.01 2.00 2.98 4.00 5.07 6.13 6.97 7.80 8.71 9.62 10.19 10.88 11.6180 1.02 2.00 2.98 4.00 5.10 6.18 6.98 7.77 8.67 9.55 10.06 10.68 11.4090 1.02 2.00 2.97 4.00 5.13 6.24 7.00 7.75 8.64 9.49 9.93 10.48 11.20

FISHER (Ref. 25°C)

Temperatur °C

1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 8.991 10.00 11.00

0 N/A N/A N/A 4.01 5.05 6.07 7.13 8.15 9.166 10.34 11.805 0.95 1.98 2.98 3.99 5.04 6.05 7.10 8.13 9.126 10.26 11.6910 0.98 1.98 2.97 4.00 5.03 6.06 7.07 8.08 9.089 10.19 11.4615 1.01 2.02 3.00 3.99 4.99 6.05 7.05 8.01 9.055 10.12 11.3120 1.01 2.00 3.00 4.00 5.00 6.00 7.02 8.00 9.022 10.06 11.1725 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 8.991 10.00 11.0030 1.02 2.00 3.02 4.01 5.01 5.99 6.99 8.00 8.961 9.94 10.8835 1.03 2.02 3.03 4.02 5.01 5.98 6.98 7.95 8.930 9.90 10.7640 1.02 2.01 3.03 4.03 5.04 5.97 6.97 7.94 8.902 9.85 10.6245 1.03 2.01 3.04 4.04 5.06 5.97 6.97 7.94 8.874 9.81 10.52 50 1.03 2.01 3.04 4.06 5.08 5.96 6.97 7.93 8.845 9.78 10.4155 4.07 6.97 8.815 9.7460 4.09 6.98 8.784 9.70 65 4.11 6.99 9.6870 4.13 7.00 9.6575 4.14 7.02 9.6380 4.16 7.03 9.6285 4.18 7.06 9.6190 4.21 7.08 9.6095 4.23 7.11 9.60

Appendix


DIN (19267) (Ref. 25°C)

Temperatur°C

1.09 3.06 4.65 6.79 9.23 12.75

0 1.08 3.12 4.67 6.89 9.48 13.89 5 1.08 3.11 4.67 6.87 9.43 13.6310 1.09 3.10 4.66 6.84 9.37 13.3715 1.09 3.09 4.66 6.82 9.32 13.1620 1.09 3.07 4.65 6.80 9.27 12.9625 1.09 3.06 4.65 6.79 9.23 12.7530 1.10 3.05 4.65 6.78 9.18 12.6135 1.10 3.05 4.65 6.77 9.13 12.4540 1.10 3.04 4.66 6.76 9.09 12.2945 1.10 3.04 4.67 6.76 9.04 12.0950 1.11 3.04 4.68 6.76 9.00 11.9860 1.11 3.04 4.70 6.76 8.92 11.6970 1.11 3.04 4.72 6.76 8.88 11.4380 1.12 3.05 4.75 6.78 8.85 11.1990 1.13 3.07 4.79 6.80 8.82 10.99

JIS Z 8802 (Ref. 25°C)

Temperatur°C

1.679 4.008 6.865 7.413 9.180 10.01

0 1.666 4.003 6.984 7.534 9.464 10.325 1.668 3.999 6.951 7.500 9.395 10.2410 1.670 3.998 6.923 7.472 9.332 10.1815 1.672 3.999 6.900 7.448 9.276 10.1220 1.675 4.002 6.881 7.429 9.225 10.0625 1.679 4.008 6.865 7.413 9.180 10.0130 1.683 4.015 6.853 7.400 9.139 9.9735 1.688 4.024 6.844 7.389 9.102 9.9240 1.694 4.035 6.838 7.380 9.068 9.8945 1.700 4.047 6.834 7.373 9.038 9.8650 1.707 4.060 6.833 7.367 9.011 9.8355 1.715 4.075 6.834 7.361 8.985 9.80 60 1.723 4.091 6.836 7.355 8.962 9.77 70 1.743 4.126 6.845 7.349 8.921 9.74 80 1.766 4.164 6.859 7.343 8.885 9.71 90 1.792 4.205 6.877 7.337 8.850 9.68 95 1.806 4.227 6.886 7.331 8.833 9.65

Index


Index

A

Accessories, optional 105Analysis 79

Starting a blank value determ. using the Run key 80Starting a blank value determ. using the Series key 77Starting a sample determ. using the Run key 79Starting a sample determ. using the Series key 75Starting a titer determ. using the Run key 80Starting a titer determ. using the Series key 76

Arrow keys 15Assignment of a function key 44Attaching and removing the titration beaker 12Attaching the titration stand to the titrator 9Auxiliary functions 89Auxiliary I/O 102

B

Balance, setting 36Beeper sound, setting 50Blank values 40

Adding a blank value 40Blank value determ. from the blank values setup menu 43Deleting a blank value 42Modifying a blank value 40Printing blank values 42

Blank value determination using the Run key 80Blank value determination using the Series key 77Burette 92

Dispensing 93Rinsing the burette 92Rinsing the tip 93

Burette intallation 10

C

Calculation 67Calibration standards, predifined 120Centronics socket 111Changing the assignment of a function key 44Cleaning 107Communication interfaces 101Connections at the rear of the titrator 13Connection possibilities for peripheral instruments 110

D

Date, setting 48Defining access rights 47

Expert 47Routine 47

Deleting the assignment of a function key 45

Design of the titrator 13Display 15Disposal 107

E

EP titration 61Control param. 62Evaluation 66Recognition 65Termination param. 65

Error messages 99Escape key 17Expert 47

F

Function keys 15Assignment of a function key 44Changing the assignment of a function key 44Deleting the assignment of a function key 45

G

Global errors and malfunctions 99

H

Hardware tests 99,100Auxiliary I/O 102

Magnetic stirrer 102Overhead stirrer 102TTL-I/O 102

Communication interfaces 101Balance test 102Interface test 101Printer test 101

pH input value 103User interface 100

Beeper test 101Keypad test 100Key codes 100Screen test 100

Help function keys 17Home screen 18

I

Information menu 89Service 89System information 89System test 89

Index


Input keys 15Entering character strings into text boxes 15Entering numbers into number boxes 16

Installation 9Attaching and removing the titration beaker 12Attaching the titration stand to the titrator 9Installing the burette 10Installing the magnetic stirrer 10Swiveling the titration stand 11

Introduction 5

L

Language, setting 48

M

Magnetic stirrer installation 10Main methods 43

Assignment of a function key 44Changing the assignment of a function key 44Deleting the assignment of a function key 45

Malfunctions 99Manual titration 93Measuring potential 90Measuring temperature 90Menu keys 16Methods (Method) 53

Creating a method 55Selecting a method from the methods list 55Selecting a method using its method ID 55

Deleting methods 72Selecting a method from the methods list 72Selecting a method using the method ID 72

Modifying a method 56Calculation 67

Table of formulas for the calculation of results 70EP titration 61

Control param. 62Evaluation 66Recognition 65Termination param. 65

Measure 60Report 71Sample 58Selecting a method from the methods list 57Selecting a method using a method ID 56Stir 60

Predefined methods 74Printing a method 73

Selecting a method from the methods list 73Selecting a method using the method ID 73

Printing a methods list 73Starting a method 54

Starting methods from the method editor 54

O

Operating concept 14Optional accessories 105

P

Performing a titration 83Performing titration method 920 84Preparations 83

Filling the burette (rinsing) 84Peripherals 35

Setting up a balance 36Setting up a printer 35

pH input value 103Potential, measuring 90Predefined calibration standards 120Predefined methods 74Printer, setting 35

R

Report 71,95Report header, enter 50Reset key 17Results 95

Displaying and printing results 96Statistics 96

Adding a result to the statistics 98Displaying or printing a sample series 97Removing results from the statistics 97

Terminating the series 98Routine 47RS232C connector 111Run 79

Starting a blank value determination using the Run key 80Starting a sample determination using the Run key 79Starting a titer determination using the Run key 80

S

Safety measures 6Measures for operational safety 6Measures for your protection 6

Sample 58Sample determination using the Run key 79Sample determination using the Series key 75Sensor 89

Calibrating a sensor 91Measuring potential 90Measuring temperature 90Testing a sensor 91

Sensors 25Adding a sensor 25Deleting a sensor 28Modifying a sensor 26Printing a sensor 28

Index


Sensor calibration from the sensor setup menu 29Performing sensor calib. from the sensor setup menu 30Zero point and slope 29

Sensor test from the sensor setup menu 32Series 75

Starting a blank value determ. using the Series key 77Starting a sample determination using the Series key 75Starting a titer determination using the Series key 76

Service and maintenance 107Settings 47

Defining the temperature unit 49Entering a report header 50Entering the titrator ID 49Setting the beeper sound 50Setting the date 48Setting the language 48Setting the time 49

Setup 19Opening the Setup menu 19

Standards 37Adding a standard 37Deleting a standard 39Modifying a standard 37Printing a standard 39

Standard equipment 7Start

Starting a blank value determ. using the Series key 77Starting a blank value determination using the Run key 80Starting a sample determination using the Run key 79Starting a sample determination using the Series key 75Starting a titer determination using the Run key 80Starting a titer determination using the Series key 76

Statistics 96Stir 60Stirrer 91Swiveling the titration stand 11

T

Technical data 109Centronics socket 111Connection possibilities for peripheral instruments 110RS232C connector 111TTL I/O socket 111

Temperature, measuring 90Temperature unit, define 49Terminating the series 98Time, setting 49Titer determination using the Run key 80Titer determination using the Series key 76Titrants 19

Adding a titrant 20Deleting a titrant 22Modifying a titrant 20Printing a titrant 23

Titer determination from the titrant setup 23Performing the titer determ. from the Titrant setup 24

Titration 83Performing titration method 920 84Preparations 83

Filling the burette (rinsing) 84Titration stand 50Titrator ID, enter 49TTL I/O socket 111TTL interface description 112

U

User interface 100User management 45

Adding a user 45Defining access rights for active users 47Defining an active user 46Deleting a user 46

© Mettler-Toledo AG 2005, 2006 ME-51710354A Printed in Switzerland 0610/2.12

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Documents

51710354 DL15 E - Cole-Parmer · 5.7.1 Assignment of a function key 44 5.7.2 Changing the assignment of a function key 44 5.7.3 Deleting the assignment of a function key 45 5.8 User