9240 Sodium Analyzer Operator Manual

7/25/2019 9240 Sodium Analyzer Operator Manual

1/148

Operator Manual

POLYMETRON 9240MULTI CHANNEL SODIUM ANALYZER

221=192=040 - Revision B - 21/10/08


2/148


3/148

9240 Multi Channel Sodium Analyzer - Important Information

Operator Manual POLYMETRON

Product Recycling Information

ENGLISH

Electrical equipment marked with this symbol may not be disposed of in European public

disposal systems after 12 August 2005. In conformity with European local and nationalregulations (EU Directive 2002/96/EC), European electrical equipment users must nowreturn old or end-of-life equipment to the manufacturer for disposal at no charge to theuser.

Note:For return for recycling, please contact the equipment manufacturer or supplier forinstructions on how to return end-of-life equipment for proper disposal.

DEUTSCH

Elektrogerte, die mit diesem Symbol gekennzeichnet sind, drfen in Europa nach dem 12. August 2005nicht mehr ber die ffentliche Abfallentsorgung entsorgt werden. In bereinstimmung mit lokalen und

nationalen europischen Bestimmungen (EU-Richtlinie 2002/96/EC), mssen Benutzer vonElektrogerten in Europa ab diesem Zeitpunkt alte bzw. zu verschrottende Gerte zur Entsorgungkostenfrei an den Hersteller zurckgeben.

Hinweis:Bitte wenden Sie sich an den Hersteller bzw. an den Hndler, von dem Sie das Gert bezogenhaben, um Informationen zur Rckgabe des Altgerts zur ordnungsgemen Entsorgung zu erhalten.

FRANCAIS

A partir du 12 aot 2005, il est interdit de mettre au rebut le matriel lectrique marqu de ce symbole parles voies habituelles de dchetterie publique. Conformment la rglementation europenne (directive

UE 2002/96/EC), les utilisateurs de matriel lectrique en Europe doivent dsormais retourner le matrielus ou prim au fabricant pour limination, sans frais pour l'utilisateur.

Remarque:Veuillez vous adresser au fabricant ou au fournisseur du matriel pour les instructions de

retour du matriel us ou prim aux fins d'limination conforme.

ITALIANO

Le apparecchiature elettriche con apposto questo simbolo non possono essere smaltite nelle discarichepubbliche europee successivamente al 12 agosto 2005. In conformit alle normative europee locali enazionali (Direttiva UE 2002/96/EC), gli utilizzatori europei di apparecchiature elettriche devono restituireal produttore le apparecchiature vecchie o a fine vita per lo smaltimento senza alcun costo a carico

dellutilizzatore.Nota:Per conoscere le modalit di restituzione delle apparecchiature a fine vita da riciclare, contattare ilproduttore o il fornitore dellapparecchiatura per un corretto smaltimento.

DANSK

Elektriske apparater, der er mrket med dette symbol, m ikke bortskaffes i europiske offentligeaffaldssystemer efter den 12. august 2005. I henhold til europiske lokale og nationale regler (EU-direktiv 2002/96/EF) skal europiske brugere af elektriske apparater nu returnere gamle eller udtjenteapparater til producenten med henblik p bortskaffelse uden omkostninger for brugeren.

Bemrk:I forbindelse med returnering til genbrug skal du kontakte producenten eller leverandren afapparatet for at f instruktioner om, hvordan udtjente apparater bortskaffes korrekt.


4/148

Important Information - 9240 Multi Channel Sodium Analyzer

Operator ManualPOLYMETRON

SVENSKA

Elektronikutrustning som r mrkt med denna symbol kanske inte kan lmnas in p europeiska offentligasopstationer efter 2005-08-12. Enligt europeiska lokala och nationella freskrifter (EU-direktiv 2002/96/EC) mste anvndare av elektronikutrustning i Europa nu terlmna gammal eller utrangerad utrustning

till tillverkaren fr kassering utan kostnad fr anvndaren.Obs!Om du ska terlmna utrustning fr tervinning ska du kontakta tillverkaren av utrustningen eller

terfrsljaren fr att f anvisningar om hur du terlmnar kasserad utrustning fr att den ska bortskaffasp rtt stt.

ESPANOL

A partir del 12 de agosto de 2005, los equipos elctricos que lleven este smbolo no debern serdesechados en los puntos limpios europeos. De conformidad con las normativas europeas locales ynacionales (Directiva de la UE 2002/96/EC), a partir de esa fecha, los usuarios europeos de equiposelctricos debern devolver los equipos usados u obsoletos al fabricante de los mismos para sureciclado, sin coste alguno para el usuario.

Nota: Srvase ponerse en contacto con el fabricante o proveedor de los equipos para solicitarinstrucciones sobre cmo devolver los equipos obsoletos para su correcto reciclado.

NEDERLANDS

Elektrische apparatuur die is voorzien van dit symbool mag na 12 augustus 2005 niet meer wordenafgevoerd naar Europese openbare afvalsystemen. Conform Europese lokale en nationale wetgegeving(EU-richtlijn 2002/96/EC) dienen gebruikers van elektrische apparaten voortaan hun oude of afgedankteapparatuur kosteloos voor recycling of vernietiging naar de producent terug te brengen.

Nota:Als u apparatuur voor recycling terugbrengt, moet u contact opnemen met de producent ofleverancier voor instructies voor het terugbrengen van de afgedankte apparatuur voor een juisteverwerking.

POLSKI

Sprzt elektryczny oznaczony takim symbolem nie moe by likwidowany w europejskich systemachutylizacji po dniu 12 sierpnia 2005. Zgodnie z europejskimi, lokalnymi i pastwowymi przepisami prawa(Dyrektywa Unii Europejskiej 2002/96/EC), uytkownicy sprztu elektrycznego w Europie muszobecieprzekazywaProducentowi stary sprzt lub sprzt po okresie uytkowania do bezpatnej utylizacji.

Uwaga:Aby przekazasprzt do recyklingu, naley zwrcisido producenta lub dostawcy sprztu wcelu uzyskania instrukcji dotyczcych procedur przekazywania do utylizacji sprztu po okresie uytkow-nia.

PORTUGUES

Qualquer equipamento elctrico que ostente este smbolo no poder ser eliminado atravs dossistemas pblicos europeus de tratamento de resduos slidos a partir de 12 de Agosto de 2005. Deacordo com as normas locais e europeias (Directiva Europeia 2002/96/EC), os utilizadores europeus deequipamentos elctricos devero agora devolver os seus equipamentos velhos ou em fim de vida aoprodutor para o respectivo tratamento sem quaisquer custos para o utilizador.

Nota:No que toca devoluo para reciclagem, por favor, contacte o produtor ou fornecedor doequipamento para instrues de devoluo de equipamento em fim de vida para a sua correcta

eliminao.


5/148

9240 Multi Channel Sodium Analyzer - Important Information


Product Disposal

o e:The following only applies to European customers.

Hach Ultra is committed to ensuring that the risk of any environmental damage orpollution caused by any of its products is minimized as far as possible. The EuropeanWaste Electrical and Electronic Equipment (WEEE) Directive (2002/96/EC) that cameinto force on August 13 2005 aims to reduce the waste arising from electrical andelectronic equipment; and improve the environmental performance of all those involvedin the life cycle of electrical and electronic equipment.

In conformity with European local and national regulations (EU Directive 2002/96/ECstated above), electrical equipment marked with the above symbol may not be disposedof in European public disposal systems after 12 August 2005.

Hach Ultra will offer to take back ( f ree of charge to the custo mer) any old,unserviceable or redundant analyzers and systems which carry the above symbol, andwhich were originally supplied by Hach Ultra. Hach Ultra will then be responsible for thedisposal of this equipment.

In addition, Hach Ultra will offer to take back (at cost to the customer) any old,unserviceable or redundant analyzers and systems which do not carry the above symbol,but which were originally supplied by Hach Ultra. Hach Ultra will then be responsible forthe disposal of this equipment.

Should you wish to arrange for the disposal of any piece of equipment originally suppliedby Hach Ultra, please contact your supplier or our After Sales Service department inGeneva for instructions on how to return this equipment for proper disposal.


6/148

Important Information - 9240 Multi Channel Sodium Analyzer


Restr ict ion of Hazardous Substances (RoHS)

The European Union RoHS Directive and subsequent regulations introduced in memberstates and other countries limits the use of six hazardous substances used in themanufacturing of electrical and electronic equipment.

Currently, monitoring and control instruments do not fall within the scope of the RoHSDirective, however Hach Ultra has taken the decision to adopt the recommendations inthe Directive as the target for all future product design and component purchasing.

o e:The following only applies to exports of this product into the Peoples Republic of China.

This product is compliant with the European Union RoHS Directive.

Transmitter box X

CPU PCB(with battery)

O O

Power PCB O O

RS485 PCB O

O:

X:


7/148

9240 Multi Channel Sodium Analyzer - Table of Contents 1 of 142


Table of Contents

1 Analyzer Overview

1.1 Overview ..................................................................................................9

1.2 Schematic Process Overview ................................................................101.3 Conditioning Reagent.............................................................................11

1.4 pH Regulation ........................................................................................12

1.4.1 Non-Cationic Applications ........................................................12

1.4.2 Cationic Applications................................................................12

1.5 Measurement Process ...........................................................................14

1.5.1 Smart Rinse Option..................................................................14

1.5.2 Measurement Steps .................................................................15

1.5.3 Measurement Cycle .................................................................18

1.5.4 On-Line Measurement .............................................................18

1.6 Automatic Calibration Cycle ...................................................................19

1.7 Manual Calibration Cycle .......................................................................21

1.8 Grab Sample Measurement Cycle .........................................................22

1.9 Analyzer Outputs....................................................................................23

1.10 Available Options ...................................................................................25

1.10.1 K-Kit (cationic)..........................................................................25

1.10.2 Static Heat Exchanger System ................................................25

1.10.3 Extra Channels.........................................................................25

2 Installation

2.1 Analyzer Inspection and Unpacking.......................................................27

2.2 Instrument Preparation...........................................................................27

2.3 Presentation of the Analyzer..................................................................28

2.3.1 Analyzer Front Panel................................................................28

2.3.2 Analyzer Rear Panel ................................................................29

2.3.3 Pump Box.................................................................................30

2.4 Instrument Mounting ..............................................................................31

2.4.1 Panel Mounting ........................................................................31

2.4.2 Wall Mounting ..........................................................................32

2.5 Step-by-Step Installation........................................................................332.5.1 Mains Power Connection .........................................................33

2.5.2 RS485 Connection ...................................................................38

2.5.3 Input/Output Connections ........................................................40

2.5.4 Sample Tubes Installation........................................................41

2.5.5 Reagents Installation................................................................42

2.5.6 Magnetic Stirrer Installation......................................................43

2.5.7 Reagents Volume Declaration .................................................44

2.5.8 Flow Rate Adjustment ..............................................................45

2.5.9 Sample pH Conditioning Check ...............................................462.5.10 Reference Electrode Installation ..............................................47

2.5.11 Sodium Ion Selective Electrode Installation .............................49
http://-/?-http://-/?-


8/148

2 of 142 Table of Contents - 9240 Multi Channel Sodium Analyzer


2.5.12 Fill Electrolyte Reservoir...........................................................50

2.6 Analyzer Stabilization.............................................................................51

2.7 Analyzer Setup .......................................................................................51

3 Operating Instructions

3.1 Data Entry ..............................................................................................533.1.1 Function Keys...........................................................................53

3.1.2 Numeric Fields..........................................................................54

3.1.3 Alphanumeric Fields .................................................................55

3.1.4 List Element Fields...................................................................56

3.1.5 Incremental Value Fields..........................................................56

3.1.6 Data Entry Input Errors.............................................................56

3.2 Measurement Screens ...........................................................................57

3.2.1 Principal Display .......................................................................57

3.2.2 Historical Display ......................................................................583.2.3 Alarms Screen..........................................................................59

3.3 Main Menu..............................................................................................60

3.3.1 Verification................................................................................61

3.3.2 Grab Sample ............................................................................63

3.4 Menu Structure Overview.......................................................................65

4 System Setup

4.1 System Setup - Menu Overview.............................................................68

4.2 Date and Time........................................................................................68

4.3 Display Options ......................................................................................694.4 Passwords..............................................................................................70

4.5 Default Values ........................................................................................70

4.6 Adjust mA Output ...................................................................................71

4.7 Factory Settings .....................................................................................71

5 User Setup

5.1 User Setup - Menu Overview .................................................................74

5.2 Measurement .........................................................................................75

5.2.1 Targeted pH (Non-Cationic Applications Only).........................75

5.2.2 Total Gas/Water Ratio (Cationic Applications Only).................755.2.3 Measure Steps .........................................................................75

5.2.4 Reactivation Frequency............................................................76

5.2.5 Datalogger Setup......................................................................77

5.2.6 Graph Time Base .....................................................................78

5.3 Alarms ....................................................................................................78

5.3.1 Alarm 1 to 4 ..............................................................................79

5.3.2 Warning Alarm..........................................................................80

5.3.3 System Alarm ...........................................................................80

5.3.4 System and Warning Alarm Table............................................815.4 mA Outputs ............................................................................................82

5.4.1 Outputs 0 to 5 ...........................................................................82
http://-/?-http://-/?-


9/148

9240 Multi Channel Sodium Analyzer - Table of Contents 3 of 142


5.4.2 Event Indication........................................................................83

5.4.3 Test ..........................................................................................84

5.5 RS485 (or PROFIBUS) ..........................................................................84

5.6 Sample Channels...................................................................................85

5.6.1 Number of Channels ................................................................85

5.6.2 Channel Activation ...................................................................865.6.3 Sequence.................................................................................86

5.6.4 Channel Names .......................................................................86

6 Calibration

6.1 Calibration - Menu Overview..................................................................88

6.2 Start Calibration .....................................................................................88

6.2.1 Calibrate Known Addition.........................................................88

6.2.2 One Point Calibration ...............................................................90

6.2.3 Two Point Calibration...............................................................916.3 Automatic Calibration Setup...................................................................92

6.4 Calibration Results .................................................................................93

6.5 Calibration Loggings ..............................................................................93

6.6 Custom Adjustment................................................................................94

6.7 Temperature Calibration ........................................................................94

7 Maintenance and Diagnost ics

7.1 Maintenance Schedule...........................................................................95

7.2 Battery Replacement..............................................................................95

7.3 Fuse Replacement.................................................................................967.4 Maintenance and Diagnostics Menu Option ..........................................97

7.5 Maintenance and Diagnostics - Menu Overview....................................97

7.6 Reagent Changes ..................................................................................98

7.6.1 Adjust Bottle Volumes..............................................................98

7.6.2 Priming Tubes..........................................................................99

7.6.3 Bottles Full ...............................................................................99

7.7 Calibration Diagnostics ........................................................................100

7.8 Raw Values..........................................................................................100

7.9 Test Accessories..................................................................................100

7.9.1 Hydraulics ..............................................................................1017.9.2 Relays ....................................................................................101

7.9.3 Logical Inputs.........................................................................102

7.10 Sensor Reactivation.............................................................................102

7.11 Extended Stop......................................................................................103

7.12 Start Up................................................................................................104

7.13 Software Versions................................................................................104

8 Troubleshooting

8.1 General Faults......................................................................................105

8.2 Detection of Functional Faults..............................................................109

8.3 Miscellaneous Problems ......................................................................110
http://-/?-http://-/?-


10/148

4 of 142 Table of Contents - 9240 Multi Channel Sodium Analyzer


9 Specifications

9.1 Technical Specifications.......................................................................111

9.2 Model Identification System .................................................................114

Appendix A: Spare Parts and Accessories

A.1 Accessories - Options - Maintenance Kits............................................115

A.2 Spare Parts - In Contact with Sample ..................................................116

A.3 Spare Parts - In Contact with Cell or Electrodes..................................116

A.4 Spare Parts - In Contact with Reagents or Standard Solution .............117

A.5 Electronics............................................................................................118

A.6 Additional Hardware .............................................................................118

A.7 Documentation .....................................................................................118

Appendix B: Configuration Tables

B.1 User Configuration Table .....................................................................119

Appendix C: Reagent Preparation

C.1 Conditioning Reagent...........................................................................125

C.2 Standard Solutions...............................................................................125

C.3 Automatic Calibration Solution (10 ppm Na) ........................................127

C.4 3M KCl..................................................................................................127

C.5 0.5M NaNO3 ........................................................................................127

Appendix D: Material Safety Data Sheets (MSDS)

D.1 Diisopropylamine (DIPA) ......................................................................129D.2 Potassium Chloride ..............................................................................132

D.3 Sodium Chloride...................................................................................135

D.4 Sodium Nitrate......................................................................................137
http://-/?-http://-/?-


11/148

9240 Multi Channel Sodium Analyzer - Manual Overview 5 of 142


Manual Overview

About This Manual

The information in this manual has been carefully checked and is believed to be

accurate. However, Hach Ultra assumes no responsibility for any inaccuracies that maybe contained in this manual. In no event will Hach Ultra be liable for direct, indirect,special, incidental, or consequential damages resulting from any defect or omission inthis manual, even if advised of the possibility of such damages. In the interest ofcontinued product development, Hach Ultra reserves the right to make improvements inthis manual and the products it describes at any time, without notice or obligation.

Published in Europe.

Copyright 2008 by Hach Ultra. All rights reserved. No part of the contents of thismanual may be reproduced or transmitted in any form or by any means without thewritten permission of Hach Ultra.

Revision History

Revision A, September 2007, Hach Ultra

Revision B, April 2008, Hach Ultra

Safety Precautions

Please read the entire manual before unpacking, setting up, or operating this instrument.

Pay particular attention to all warning and caution statements. Failure to do so couldresult in serious injury to the operator or damage to the equipment.

To the ensure the protection provided by this equipment is not impaired, do not use orinstall this equipment in any manner other than that which is specified in this manual.

Safety Conventions

WARNING

In this manual, a warning is used to indicate a condition which, if not met, could causeserious personal injury and/or death. Do not move beyond a warning until all conditions

have been met. If this warning sign appears on the instrument itself, refer to

Precautionary Labels on page 7for an explanation.

CAUTION:A caution is used to indicate a condition which, if not met, could cause minor ormoderate personal injury and/or damage to the equipment. Do not move beyond a

caution until all conditions have been met.

o e:A note is used to indicate important information or instructions that should be consideredbefore operating the equipment.
http://-/?-http://-/?-


12/148

6 of 142 Manual Overview - 9240 Multi Channel Sodium Analyzer


Safety Recommendations

For safe operation, it is imperative that these service instructions be read before use andthat the safety recommendations mentioned herein be scrupulously respected. If dangerwarnings are not heeded to, serious material or bodily injury could occur.

WARNING

The installation of the instrument should be performed exclusively by personnel

specialized and authorized to work on electrical installations, in accordance withrelevant local regulations.

CAUTION:This equipment has been tested and found to comply with the limits for Class A digital

device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference when the equipment is operated in acommercial environment. This equipment generates, uses, and can radiate radio

frequency energy and, if not installed and used in accordance with this instructionmanual, may cause harmful interference to radio communications. Operation of this

equipment in a residential area is likely to cause harmful interference in which case theuser will be required to correct the interference at his own expense.

Service and Repairs

None of the instruments components can be serviced by the user. Only personnel fromHach Ultra or its approved representative(s) is (are) authorized to attempt repairs to thesystem and only components formally approved by the manufacturer should be used.Any attempt at repairing the instrument in contravention of these principles could causedamage to the instrument and corporal injury to the person carrying out the repair. It

renders the warranty null and void and could compromise the correct working of theinstrument and the electrical integrity or the CE compliance of the instrument.

If you have any problems with installation, starting, or using the instrument pleasecontact the company that sold it to you. If this is not possible, or if the results of thisapproach are not satisfactory, please contact the manufacturers Customer Service.

Potential Safety Hazards

The following potential safety hazards are associated with operating the analyzer:

Electrical (line voltage)

Potentially hazardous chemicals
http://-/?-http://-/?-


13/148


14/148

8 of 142 Manual Overview - 9240 Multi Channel Sodium Analyzer

http://-/?-http://-/?-


15/148

9240 Multi Channel Sodium Analyzer - Analyzer Overview 9 of 142


1 Analyzer Overview

1.1 Overview

The Polymetron 9240 Sodium Analyzer is a continuous on-line monitor for directmeasurement of sodium in power generation processes.

The measurement is based on a direct potentiometric technique using a highly sensitivesodium glass electrode. The difference of potential between the glass electrode and thereference electrode is directly proportional to the logarithm of sodium concentration asshown by the Nernst law:

With: KNa-S : Selectivity constant of the ion S

aS : Activity of the ion S

ZS : Valency of the ion S

ED : Diffusion potential (conductivity dependant)

The analyzer features low maintenance, automatic or manual process calibration anduses a sodium-sensitive glass electrode together with a reference electrode to measuresodium concentrations in a sample that has been previously conditioned to a pH > 10.5.

The pH value can be set to between 10.7 and 11.6 pH and is controlled by measuring theconductivity of the conditioned sample.

External grab sample analysis is also available for this high-accuracy analyzer.

The physical system consists of two integrated units, the electronics control section andthe liquid handling section.
http://-/?-http://-/?-


16/148

10 of 142 Analyzer Overview - 9240 Multi Channel Sodium Analyzer


1.2 Schematic Process Overview

The illustration below shows the major components of the analyzer.

Fig 1-1: Analyzer Overview Diagram

1 Sample inlet flow adjustment (one per channel) 10 Auto-calibration pump2 Fast loop sample outlet (one per channel) 11 Reactivation pump

3 Magnetic stirrer 12 Reference electrode

4 Conditioning valve 13 Sodium ion-selective electrode

5 Stirrer motor 14 Temperature electrode

6 Overflow vessel 15 Reactivation solution

7 Sample level detector 16 Conditioning solution

8 Drain 17 Calibration solution

9 Drain pump
http://-/?-http://-/?-


17/148


18/148



1.4 pH Regulation

1.4.1 Non-Cationic Applications

In order to ensure the accuracy and the repeatability of low sodium concentrations, pH

must be constant and preferably maintained at or above 11.2 to maintain the lowestproton interference.

The 9240 uses the injection of vapor of diisopropylamine (DIPA) to obtain high pH levelwithout sodium contamination. Using the siphon effect of the liquid sample column, DIPAis mixed with the sample without using any pump or pressurized gas. A fine regulation ofthe siphon effect is performed using a 2/3-way valve.

The pH is evaluated directly and continuously from the conductivity of the conditioned

sample in the cell. In the solution, the most mobile proton (H+) has the biggest influenceon conductivity. Therefore, by controlling the conductivity, its concentration can bemaintained constant. In addition, the pH is controlled from the conductivity by modifyingthe gas/liquid ratio thus simultaneously maintaining a constant pH.

In temperature variations, the system automatically modifies the gas/liquid ratio and thenadds DIPA vapors to compensate the DIPA solubility in the sample.

If the sample is already partially conditioned by a customer system (e.g. with NH3up to

pH 9.5 - 10.5), the regulation system evaluates the pH and adds the necessary DIPAquantity to reach its pHtarget 0.2 and minimizes DIPA consumption.

The pH can be set to between 10.7 and 11.6 pH. The DIPA consumption is 500 mL/month at 25C for a sample pHtargetof 11.2.

1.4.2 Cationic Applications

Instruments to be used in cationic applications are configured at the factory and can beidentified by their model number of 09240=A=1xxx (the 1identifies it as being for cationicapplications).

Measurement of trace level sodium concentrations after cationic resin processesrequires an assisted conditioning because the pH in the sample to be measured will onlybe between 2 and 4.

The 9240 analyzer uses a gas pump with no moving parts (based on the pizo principal)to effect this assisted conditioning. The pump is controlled by the analyzers electronicsand works according to the amount of sample conditioning required. The flow rate of thepump is factory set at 200 cc/min of gas.

An exit tube ensures that any DIPA vapors not dissolved in the sample are recoveredand evacuated to the drain along with the sample.

In a cationic application, the 9240 does not use conductivity to evaluate the pH.However, it can be adjusted according to the sample pH by a time ratio of theconditioning valve aperture. A specific Tgas/Twaterratio is used for each channel in order

to minimize the DIPA consumption and to adjust a constant pH.
http://-/?-http://-/?-


19/148



The usual Tgas/Twaterratio values are as follows:

Refer to Sample pH Conditioning Check on page 46for the procedure to select thecorrect ratio in relation to the initial pH sample.

1.4.2.1 DIPA Consumption

The consumption of DIPA will depend on the values defined in the above table. With aratio of 100% (i.e. the volume of sample is equal to the volume of gas) the consumptionof DIPA will be approximately 90 mL/day.

The following table gives additional typical consumption according to the Tgas/Twaterratio setup:

The instrument continuously monitors the use of DIPA. A warning alarm will be triggered

if the calculated volume in the bottle is less than 100 mL. A system alarm (andsuspension of measurements) will be triggered when the calculated volume is less than50 mL.

pHTgas/Twater

Ratio

2 180%

2.3 80%

2.6 50%

2.9 30%

3.5 15%

4.0 10%

Tgas/Twater

Ratio

Consumption

(days per liter)

180% 6.25

150% 7.5

100% 11

80% 14

50% 22.5

30% 37
http://-/?-http://-/?-


20/148



1.5 Measurement Process

1.5.1 Smart Rinse Option

The measurement cell is rinsed by the analyzer after a calibration, grab sample, or

sensor reactivation process and prior to resuming sample measurements. Set the smartrinsing parameter to No(see Measure Steps on page 75) for a fixed rinse cycle of 10minutes or set to Yesto invoke the smart rinsing option which better guarantees theaccuracy of measurements after the rinsing cycle.

If the parameter is set to Yes, a maximum rinse time must be defined. To ensure a fastrinse the recommended time is 60 minutes with a flow rate of greater than 6 L/hour.During the rinse process, as soon as the analyzer determines that measurements arestable it will revert back to sample measurement mode. If there is an increase in thesodium concentration at any time, then after a 5 minute period the rinsing will be abortedand the analyzer will revert back to sample measurement mode.

Fig 1-3: Rinsing Process after a Calibration, Grab Sample or Sensor Reactivation
http://-/?-http://-/?-


21/148



1.5.2 Measurement Steps

The 9240 is designed as a multi channel analyzer, though it can be used as a singlechannel analyzer. The measurement parameters are different depending on whether theanalyzer is set up as a single or multi channel analyzer.

If the analyzer is configured as a single channel unit, the following parameters arerequired:

The on-line measurement time defines the measurement time of the sample, andhow often the measurement values are stored in memory. Regardless of this valuethe alarms, analog outputs and RS 485 serial communication output are updatedcontinuously. The recommended (and default) value is 10 minutes, which willensure 3 months of data stored internally.

The smart rinse facility can be used for rinsing the measurement cell after acalibration, grab sample or sensor reactivation. If used, a maximum rinse timemust be entered.

If the analyzer is configured as a multi channel unit , the following parameters arerequired in addition to the on-line measurement time and smart rinse facility describedabove, and are applicable to all configured channels:

A cycle time (total measurement and rinse time, see Fig 1-4below), which mustbe greater than the on-line measurement time. The longest cycle time of allchannels needs to be entered to allow an efficient rinsing time. This will guaranteethe accuracy (0.1 ppb or 5%) for all configurations.

The search stability parameter can reduce the rinsing time after a change ofmeasurement channel. Set to Yesto get only accurate measurements transmittedthanks to the smart rinsing cycle which automatically adapts the sample flow rateand duration of the rinsing step, or set to Nofor a preferred fixed rinse time (cycletime minus on-line measurement time), though accuracy could be at risk.

After each change of measurement channel, the analyzer rinses the measurement cellbefore measuring the sodium level outputs during the on-line measurement time periodas indicated in the following diagram.

Note:The choice of the right timings is essential for accurate measurements.

Fig 1-4: Analyzer Cycle Time
http://-/?-http://-/?-


22/148



1.5.2.1 Search Stabil ity set to NO - Fixed Measurement Mode

As the cycle and on-line measurement times defined by the user are fixed and identicalfor each channel, they need to be long enough to have an efficient rinsing step for allconfigurations in order to achieve accurate measurements.

The rinsing time has to be chosen from either the channel with the highest or the lowestsodium concentration.

The following table shows the recommended rinsing times to guarantee consistent andaccurate measurements. Refer also to Table 9-1, Technical Specifications, on page 111for the best performance timings.

Example:

Channel 1: 200 ppbChannel 2: 0.1 ppbChannel 3: 5 ppbChannel 4: 50 ppbSequence: 1 2 3 4 * * * * * * * *

In this example, and based on the table above, the best choice for the rinsing time is tochoose at least 45 minutes. If an on-line measurement time of 5 minutes is chosen, acycle time of 50 minutes will be used to ensure the accuracy. In this case, the analyzerwill spend 50 minutes on each channel before passing on to the next.

Table 1-1: Recommended rinsing times

Previous

channel

Current

channel

T Recommended rinsing

time to reach accuracy

1 0.05 ppb 25C 35 min

0.05 1 ppb 25C 30 min

5 0.1 ppb 25C 35 min

0.1 5 ppb 25C 20 min

50 0.1 ppb 25C 40 min

0.1 50 ppb 25C 15 min

200 0.1 ppb 25C 45 min

0.1 200 ppb 25C 15 min
http://-/?-http://-/?-


23/148



1.5.2.2 Search Stability set to YES - Automatic Measurement Mode

In this configuration, a maximum cycle time not to be exceeded has to be configured.This is the sum of the maximum rinse time plus the fixed on-line measurement time.

As with the fixed measurement mode, the cycle and on-line measurement times need to

be long enough to meet the needs of the configuration in order to achieve accuratemeasurements.

In automatic measurement mode, the analyzer will minimize the rinsing time whilesearching for a stable measurement. Then the cycle time is minimized by determiningthe shortest rinsing time needed to reach accuracy (5% or 0.1ppb) for each channelmeasurement. The on-line measurement time is fixed and remains unchanged.

If, at the end of the longest possible cycle time given by the user, the analyzer has stillnot reached the stability criteria required for accuracy, the analyzer will give ameasurement value but also issues a stabiliz. errorswarning. This warning alarm willstop if the stability criteria are found the next time the analyzer is at the same point in thesequence.

If the analyzer never finds the stability criteria, a longer cycle time needs to be defined inorder to achieve accurate measurements. The recommended strategy is to give a verylong time (e.g. 90 min) and the analyzer will minimize all rinsing times between channels.

Example:

Channel 1: 200 ppbChannel 2: 0.1 ppbChannel 3: 5 ppbChannel 4: 50 ppbSequence: 1 2 3 4 * * * * * * * *

In this example, with an on-line measurement time fixed at 5 minutes and maximumcycle time set at 60 minutes (much more than is necessary), then assuming stability foran accurate measurement is reached, the analyzer will use the following timings:

The analyzer is assumed to be measuring channel 4:

It switches to channel 1.

Channel 1: to rinse from 50 ppb to 200 ppb, rinsing time < 15 minutes

Actual cycle time < 20 minutes (rinsing time < 15 minutes + on-line measurementtime of 5 minutes)

Channel 2: to rinse from 200 ppb to 0.1 ppb, rinsing time ~ 45 minutes

Actual cycle time ~ 50 minutes (rinsing time ~ 45 minutes + on-line measurementtime of 5 minutes)

Channel 3: to rinse from 0.1 ppb to 5 ppb, rinsing time ~ 20 minutes

Actual cycle time ~ 25 minutes (rinsing time ~ 20 minutes + on-line measurementtime of 5 minutes)

Channel 4: to rinse from 5 ppb to 50 ppb, rinsing time < 15 minutes

Actual cycle time < 20 minutes (rinsing time < 15 minutes + on-line measurementtime of 5 minutes)
http://-/?-http://-/?-


24/148



1.5.3 Measurement Cycle

The following flow chart illustrates the logic used during the measurement cycle.

1.5.4 On-Line Measurement

On completion of each rinsing time, the analyzer starts the on-line measurement step.The sodium concentration is shown on the display panel and output via the RS485 link.

At the end of this step, the analyzer refreshes the 4-20 mA outputs and alarm relays,writes data to the analyzer memory and the display panel. The concentration displayedis the average concentration of the final minute of the on-line measurement step.

Fig 1-5: Measurement Cycle
http://-/?-http://-/?-


25/148



1.6 Automatic Calibration Cycle

The following section gives an overview of the automatic calibration process. For detailson setting up and running this process, refer to the section entitled Calibration onpage 87. As the 9240 is a multi channel analyzer, the user must define which channel willbe used for calibration (see Automatic Calibration Setup on page 92). The selectedchannel will also be used when a manual calibration is launched. If the analyzer is set upas a single channel unit, then calibration will always be made on channel 1 by default.

Fig 1-6: Automatic Calibration Cycle
http://-/?-http://-/?-


26/148



This process calculates the slope and offset of the ISE sodium electrode and thereference electrode. It is based on the measurement of the potential and temperature ofthree different samples, two of which contain known concentrations of sodium:

Measurement of a first sample of unknown concentration

Measurement of a second sample of known concentration

Measurement of a third sample of known concentration

The additions of known concentration are made to the overflow vessel which is partiallyemptied to avoid any spillage. The volume of the overflow vessel has been factorydefined during preparation of the instrument. This parameter can only be modified by aqualified service technician.

The sample to which the known additions will be made is measured. This measurementmust be stable and less than 1 per thousand of calibration solution concentration andbecomes the background point measurement P0displayed on the analyzer.

The cycle is as follows:

1) Phase 1:The sample to which the known additions will be made is measured.This measurement must be stable and less than 1 thousandth of the calibrationsolution concentration. This becomes the background point measurement P0displayed on the analyzer.

2) Phase 2:The electrode is reactivated. This consists of injecting Sodium Nitrateinto the solution to maintain a high level of sodium measurement for a minimumof 5 minutes.

3) Phase 3:The measurement cell is rinsed. The overflow vessel is then refilledwith fresh sample.

4) Phase 4:The overflow vessel is drained slightly to allow enough room for the

addition of the first calibration solution.5) Phase 5:The first calibration solution of known concentration is added and

mixed with the sample. The overflow vessel is drained into the measurement celland the first concentration measured and displayed as P1on the analyzer.

6) Phase 6:The overflow vessel is rinsed and refilled with fresh sample.

7) Phase 7:The overflow vessel is drained slightly to allow enough room for theaddition of the second calibration solution.

8) Phase 8:The second calibration solution of known concentration is added andmixed with the sample. The overflow vessel is drained into the measurement celland the second concentration measured and displayed as P2on the analyzer.

9) Phase 9:The slope and offset are calculated and displayed. If the calculatedslope and offset values are within the acceptable limits they will be used for allfuture measurements. Normal measurement is then resumed starting with asmart or fixed rinsing step.
http://-/?-http://-/?-


27/148



1.7 Manual Calibration Cycle

The following section gives an overview of the manual calibration process. For details onsetting up and running this processes, refer to the section entitled Calibration onpage 87. As the 9240 is a multi channel analyzer, the user must define which channel willbe used for calibration (see Automatic Calibration Setup on page 92). If the analyzer is

set up as a single channel unit, then calibration will always be made on channel 1 bydefault.

This process calculates the slope and offset of the ISE sodium electrode and thereference electrode. It is based on the measurement of potential and temperature of twodifferent samples of known sodium concentration.

The concentration values of the two calibration solutions must be entered into theanalyzer prior to calibration (see Two Point Calibration on page 91). The lowerconcentration should be greater than 50 ppb and the relationship between low and highconcentration should be 10 or more. The recommended low value is 100 ppb and thehigh value is 1,000 ppb.

The cycle is as follows:

1) Phase 1:The electrode is reactivated. This consists of injecting Sodium Nitrateinto the solution to maintain a high level of sodium measurement for a minimumof 5 minutes.

2) Phase 2:The measurement cell is rinsed.

Fig 1-7: Manual Calibration Cycle
http://-/?-http://-/?-


28/148



3) Phase 3:The overflow vessel is rinsed and refilled with fresh sample.

4) Phase 4:The overflow vessel is drained, and the system waits for the operator tofill the overflow vessel with the low value calibration solution.

5) Phase 5:The overflow vessel is drained into the measurement cell and the firstconcentration measured.

6) Phase 6:The overflow vessel is rinsed and then drained. The system waits forthe operator to fill the overflow vessel with the high value calibration solution.

7) Phase 7:The overflow vessel is drained into the measurement cell and thesecond concentration measured.

8) Phase 8:The slope and offset are calculated and displayed. If the calculatedslope and offset values are within the acceptable limits they will be used for allfuture measurements. Normal measurement is then resumed starting with asmart or fixed rinsing step.

1.8 Grab Sample Measurement Cycle

The following section gives an overview of the grab sample measurement process. Fordetails on setting up and running this process, refer to the section entitled Grab Sampleon page 63.

The measurement cycle is as follows:

1) Phase 1:The electrode is reactivated. This consists of injecting Sodium Nitrateinto the solution to maintain a high level of sodium measurement for a minimumof 5 minutes (this step can be skipped if time is more important than accuracy).

2) Phase 2:When reactivation has completed, the measurement cell is rinsed for10 minutes or, if the reactivation has been skipped then the overflow vessel isemptied and refilled with the sample used for calibration.

3) Phase 3:The overflow vessel is drained, and the system waits for the operator tofill the overflow vessel with the grab sample.

4) Phase 4:The overflow vessel is drained into the measurement cell and the

sample concentration measured.5) Phase 5:The measurement value is displayed. Normal measurement is then

resumed starting with a smart or fixed rinsing step.

Fig 1-8: Grab Sample Measurement Cycle
http://-/?-http://-/?-


29/148



1.9 Analyzer Outputs

The following tables shows the outputs (screen, analog, alarm relays and RS485)generated by the analyzer during the various processes (measurement, grab sample,calibration and sensor reactivation).

For the grab sample and calibration processes, see Automatic Calibration Cycle onpage 19, Manual Calibration Cycle on page 21, and Grab Sample MeasurementCycle on page 22for a definition of each phase referred to in the table.

The terminology used in the tables is as follows:

Frozen - output frozen at the last concentration value measured

Actual - output shows the actual concentration value being measured

For the RS485 output, several variables are accessible:

Address 0 - actual concentration value being measured

Address 2, 4, 6, 8 - concentration value for channel 1 to 4 respectively Address 163 shows the analyzer status:

1 to 4 - number of channel in progress

5 - grab sample mode

10 - auto calibration mode

11 - manual calibration mode

13 - sensor reactivation mode

Standard Measurement Process

Grab Sample Process

Ac tion Screen 4-20 mA Alarms RS485Address 0 Others

Rinsing step Frozen Frozen Frozen Frozen

Measurement ActualUpdated duringlast minute ofmeasurement.

Updated duringlast minute ofmeasurement.

ActualAddress 2, 4, 6, 8:Updated at end ofthe cycle

Action Screen4-20 mA

AlarmsRS485

Conc. Other prog. Address 0 OthersPhase 1

Frozen Frozen EventGrab Sample

N/AFrozen

Address 163=5

Phase 2

Phase 3

Phase 4

Phase 5 Actual Actual Actual
http://-/?-http://-/?-


30/148



Auto Cal ibrat ion Process

Manual Calibration Process

Sensor Reactivation

Ac tion Screen4-20 mA

AlarmsRS485

Conc. Other prog. Address 0 Others

Phase 1 Actual Actual

EventCalibration

N/A

Actual Address 163=10

Phase 2

Frozen Frozen FrozenAddress 163=13

Phase 3

Phase 4

Address 163=10


Phase 6Frozen Frozen Frozen

Phase 7


Phase 9 Frozen Frozen Frozen

Ac tion Screen4-20 mA

AlarmsRS485

Conc. Other prog. Address 0 Others

Phase 1

Frozen Frozen

EventCalibration

N/A

Frozen

Address 163=13

Phase 2

Address 163=11

Phase 3

Phase 4


Phase 6 Frozen Frozen FrozenPhase 7


Ac tion Screen 4-20 mA AlarmsRS485

Address 0 Others

Frozen Frozen Frozen Frozen Adr 163=13
http://-/?-http://-/?-


31/148



1.10 Available Options

1.10.1 K-Kit (cationic)

For a high acidity water such as that from a cation exchanger outlet, the regular gaseous

conditioning is not sufficient to raise the pH to values superior to 10.3. The forced-gasconditioning system (K-kit) is then needed.

The K-Kit option includes a gas pump with no moving parts, a power supply board,additional hydraulics and full installation instructions.

For further information contact your local Hach Ultra representative.

1.10.2 Static Heat Exchanger System

A static heat exchanger system is available as an option and is capable of working withup to four channels. It comes complete with inlet and outlet connectors (4/6mm tubing)and mounting (2 flanges and screws).

Very easy to install, and requiring no voltage supply, this compact (350 x 40mm)product absorbs changes of heat even on samples flowing at 5 L/h per channel.

Specially designed for POWER applications, it has a high resistance to corrosion anddeposits, and allows incoming samples from 0 - 60C to be released to the analyzerwithin its operating range of 5 - 45C.


1.10.3 Extra Channels

The 9240 analyzer can be configured as a single or multi channel analyzer. Up to 4channels can be configured on a single analyzer.

Extra channels are easily installed and setup by following the instructions provided.

http://-/?-http://-/?-


32/148


http://-/?-http://-/?-


33/148

9240 Multi Channel Sodium Analyzer - Installation 27 of 142


2 Installation

WARNING

The instrument should only be assembled by qualified staff. Mains power should only be

connected once installation has been completed and checked.

2.1 Analyzer Inspection and Unpacking

The instrument has been factory tested and checked prior to shipping. We neverthelessrecommend that you perform a visual inspection in order to ensure that it has not beendamaged. Any marked packaging is a potential sign of damage that may not beimmediately visible. Keep all packaging in the event of claims.

Open the box. Take the packing list from the box and check the presence of all the itemsselected. If any parts or accessories are missing, refer to your distributor or to Hach Ultra.

2.2 Instrument Preparation

Before installing the analyzer, think about the following:

Place the analyzer close to the sample point. This will allow the response time tobe reduced.

The sample should be homogenous and representative.

The temperature of the sample should be between 5 and 45C.

The pressure of the sample should be between 0.2 and 6 bar and remainrelatively stable.

The solution should be free of particles. The sample lines should be in PE/PTFE/

FEP (4x6 mm). Avoid any location with a corrosive atmosphere or subject to liquid spills.

Chose a dry and dust-free location.

The ambient temperature of the analyzer should not exceed 45C. If thetemperature is below 5C, the analyzer should be installed in a heated cabinet(not provided by Hach Ultra).

WARNING

Do not connect power prior to mounting and plumbing the instrument.
http://-/?-http://-/?-


34/148

28 of 142 Installation - 9240 Multi Channel Sodium Analyzer


2.3 Presentation of the Analyzer

2.3.1 Analyzer Front Panel

Fig 2-1: Analyzer Front Panel

1 User interface 5 Door lock

2 Overflow vessel 6 Reagent shelf

3 Measuring cell 7 Frame for panel mounting

4 Flow rate adjustment for each channel
http://-/?-http://-/?-


35/148



2.3.2 Analyzer Rear Panel

Fig 2-2: Analyzer Rear Panel

1 Local controller box 4 Sample inlet valves2 Electrolyte reservoir 5 Calibration canister

3 Pump box (see also Pump Box on page 30) 6 Reactivation reagent canister
http://-/?-http://-/?-


36/148



2.3.3 Pump Box

Three pumps have been factory installed in the pump box and are used for the followingpurposes:

Fig 2-3: Inside the Pump Box

1 Auto-calibration pump

2 Drain pump

3 Reactivation pump
http://-/?-http://-/?-


37/148



2.4 Instrument Mounting

CAUTION:Whether the instrument is to be mounted on a panel or wall, it is important to note that itmust be placed in an upright position with the transmitter at the top. It is recommended

to use a spirit level to ensure that the instrument is correctly positioned and not leaningto one side or forward. This is essential to guarantee the accuracy of the analyzer.

2.4.1 Panel Mounting

For the panel mount model, the dimensions of the panel and fixation holes are as follows:

All dimensions above are in millimeters [inches].

Fig 2-4: Panel Mounting
http://-/?-http://-/?-


38/148



2.4.2 Wall Mounting

Use the wall mounting kit to fix the instrument to the wall.

Use these to drill the four holes for fixing the instrument on the wall. The distancebetween the two pieces is 460 mm.

CAUTION:It is extremely importantto respect this gap of 460 mm to avoid bending the cabinet

out of shape while fitting.

Fig 2-5: Wall Mounting Kit

Fig 2-6: Wall Mounting
http://-/?-http://-/?-


39/148



2.5 Step-by-Step Installation

WARNING

No intervention should be made on the instrument without first switching off the power.

The electrical installation should be carried out by duly qualified personnel. A supplyvoltage of 100-240 VAC is acceptable without changing the configuration. The powersupply terminals can be removed from their housing to make connection easier.

For safety reasons, it is imperative to respect the working procedure below:

Use a three-wire power cable (live + neutral + earth), sized for supplying therequired power.

The instrument should be connected to the mains via a circuit-breaker or fusewhose value should be less or equal to 20 A. It should be located in proximity andbe identified.

This connection should cut-off the live and the neutral when electrical problemsoccur or when the user wishes to intervene inside the instrument. On the otherhand, the earth conductor should always be connected.

2.5.1 Mains Power Connection

1) Open the glass window and then open the panel to have access to the rear sideof the analyzer.
http://-/?-http://-/?-


40/148



2) Pass the powersupply cable throughthe cable glandlocated at the backleft of the bottom ofthe cabinet.

3) Open the I/Oconnection box onthe rear panel.

4) Unscrew the twofixing elements...
http://-/?-http://-/?-


41/148



5) ...and allow the I/Obox to rotate down.

6) Pass the mainspower cable throughthe back end cablegland on the

transmitterenclosure.

7) Open the transmitterfront door.
http://-/?-http://-/?-


42/148



8) Remove the metallicshielding plateprotecting access tothe main board.

9) Take the powersupply connectorand note where theearth, live, andneutral must be

connected.

10) Connect the powersupply cables to theconnector...
http://-/?-http://-/?-


43/148



11) ...and put theconnector back inplace.

12) Replace the metallicshielding plate.
http://-/?-http://-/?-


44/148



2.5.2 RS485 Connection

1) Connect the RS485communicationcable as indicated.

Connection is thesame on the CPUboard for both theJBUS/MODBUS andPROFIBUS options.

2) Close the transmitterdoor.
http://-/?-http://-/?-


45/148



3) Put the I/O box backin its normalposition.

4) Fix the I/O box backin place with the 2screws.
http://-/?-http://-/?-


46/148


47/148



2.5.4 Sample Tubes Installation

Sample inlet connections- 6 mm (or '') in polyethylene or PTFE or FEP. Ifparticulate matter is present in the sample, pre-filtration is necessary. A filtershould be inserted in the sample line. One is available as an option. Use newpipes for all connections during installation.

Flow rate- > 5.5 to 30 L/hour (an absolute minimum of 5.5 L/hour is essential).

Pressure- 0.2 to 6 bars (8-100 psig)

Sample acidity- Sample acidity should not be more than 300 ppm CaCO3

Temperature- Temperature must be between 5-45 C.

At this stage of the installation, make sure that the flow valve is closed.

Connect the pipes by inserting them into the quick release connections found under thesampling block. Connect one inlet and one outlet per channel.

Be sure that the sample line is correctly flushed before any connection to avoid particle

injection into the 9240 hydraulic system.1) Connect the drain outlet.

2) Connect the sample inlet/outlets. Up to four are available, though the illustrationbelow shows only one channel connected with the other three inlet/outletconnections still available.

A Drain outlet - 12/17 mm B Sample outlet tube - 4/6 mm

C Sample inlet tube - 4/6 mm
http://-/?-http://-/?-


48/148



2.5.5 Reagents Installation

1) Prepare the reagents according to Reagent Preparation on page 125. Installthe reagent canisters in their place and connect them to their respective tubes.

2) Install and connect the conditioning solution (diisopropylamine). The diagrams

show an analyzer for non-cationic applications. Analyzers for cationicapplications have a small pump installed above and to the left of the reagentcanisters.

3) Install and connect the reactivationsolution (blue R label).

4) Install and connect the autocalibration solution (yellow CALlabel).
http://-/?-http://-/?-


49/148



2.5.6 Magnetic Stirrer Installation

1) On the front of thepanel, remove theplastic bag from theoverflow vessel

2) Remove themagnetic stirrer fromthe bag and install itin the overflowvessel
http://-/?-http://-/?-


50/148



2.5.7 Reagents Volume Declaration

o e:As you will now be using the analyzer menus to input data, it may be useful to familiarizeyourself with the data entry procedures by reading the section entitled Data Entry on

page 53of this manual.

1) Open the sample valve and check that there is no leakage in the hydraulic path.

2) Power on the analyzer.

3) Select the Menu option from the display.

4) Select MAINTENANCE/DIAG.from the

main menu and press Enter

5) Select the REAGENT CHANGESoptionand press Enter

6) Set the BOTTLES FULLparameter to Yes

and press Enter.7) Press Esc to return to the MAINTENANCE/

DIAG.menu.
http://-/?-http://-/?-


51/148


52/148



2.5.9 Sample pH Conditioning Check

o e:At this stage, the electrodes should not have been installed.

2.5.9.1 Non-Cationic Applications

2.5.9.2 Cationic Appl ications

1) With a calibrated pH sensor, measure the pH of the sample for each channeloutside of the analyzer. Note down these values.

2) The analyzer measurement sequence will be factory set depending on thenumber of configured channels (e.g. 1 2 3 4 *for a 4-channel analyzer or 1 2 *fora 2-channel analyzer). Verify this sequence is correctly setup (see Sequenceon page 86for more details).

3) Set the following measurement timings (see Measure Steps on page 75):

CYCLE TIMEto 11 minON LINE MEASto 8 minSEARCH STABto No.

4) For each channel determine the gas injection time ratio depending on the samplepH. Enter this value into the analyzer as described in Total Gas/Water Ratio(Cationic Applications Only) on page 75. The standard values are listed below:

1) Install a calibrated pH sensor in the centerposition of the measurement chamber whichis normally used for the ISE sodiumelectrode.

2) Switch the analyzer off and on to begin theprogrammed sequence.

3) For each channel, check that the pH valueof the sample after conditioning is greaterthan 10.5. If not, check the quality of theconditioning product used.

pHTgas/Twater

Ratio

2 180%

2.3 80%

2.6 50%

2.9 30%3.5 15%

4.0 10%
http://-/?-http://-/?-


53/148



5) As illustrated in the procedure for cationic applications on the previous page,install the same pH sensor in the center position of the measurement chamber.

6) Switch the analyzer off and on to begin the programmed sequence.

7) For each channel, measure the pH in the conditioned sample to check if thepump ratios are efficient enough to obtain a pH of around 11.0.

8) If necessary, update the ratios of each channel to maintain a final constant pH of11.0 0.2.

2.5.10 Reference Electrode Installation

1) Remove thereference sensor

from its box.2) Remove the plastic

reservoir from thebottom (the storagesolution is KCl 3M)and install the O-ringas shown.

3) With care, turn thebottom electrolytetube ferrule with amaximum turn tolock it.
http://-/?-http://-/?-


54/148



4) Remove the plasticplug on the entryport.

5) Install the referenceelectrode in theextreme leftmeasurementchamber.

6) Connect thereference cable (theone withoutthe bluelabel on it) to thereference electrode.

7) Connect theelectrolyte tube tothe referenceelectrode.
http://-/?-http://-/?-


55/148



2.5.11 Sodium Ion Selective Electrode Installation

o e:It is critical to preserve the integrity of the sodium ion selective electrode as much aspossible. This is why this electrode must be installed at the very last moment after all

other adjustments.

1) Remove the sodiumion selective sensorfrom its box.

2) Remove the plasticreservoir from thebottom (the storagesolution is standardtap water) and shakegently (as you would

a thermometer) todispose of anybubbles.

3) Install the O-ring asindicated right.

4) Install the ISE in the

center position of themeasurementchamber.

5) Connect the AS7cable (with the bluelabel) to theelectrode.

CAUTION:After the electrodesinstallation, it is very

important that none of theelectrode heads are

touching the bottom part of

the measuring cell. Anexample of the electrodescorrect position is shown

right.
http://-/?-http://-/?-


56/148



2.5.12 Fill Electroly te Reservoir

1) The electrolytereservoir is locatedat the back of the

analyzer.2) Take the KCl

electrolyte bottle andinsert the tip of thetapered spout intothe reservoir inlettube (illustratedright) as far as it willgo but withoutexerting any extrapressure.

3) Squeeze on thebottle as many timesas necessary to fillthe reservoir toabout 3/4 of itscapacity. If you haveany difficulty fillingthe reservoir, raisethe spout of thebottle very slightly toavoid an air lock.

4) Using thumb andforefinger, pump onthe electrolyte tubebetween thereservoir and thereference electrodeto remove any airbubbles that mayhave formed.

5) If necessary, cleanany KCl drops fromthe analyzer and thereservoir.
http://-/?-http://-/?-


57/148



2.6 Analyzer Stabilization

At this stage the analyzer has been completely installed, but needs to run for a period oftime to stabilize.

1) Push the start button.

2) Leave the system to run for a couple of hours before starting any calibrations.

2.7 Analyzer Setup

After the analyzer has stabilized, the system and user parameters must be set, followedby an initial calibration.

1) SYSTEM SETUP- see System Setup on page 67.

2) USER SETUP- see User Setup on page 73.

3) CALIBRATION- see Calibration on page 87and launch a two point calibration.

o e:The complete calibration cycle will last around 1 hour. However, the instrument cannotbe calibrated until at least one complete measurement cycle has been successfully

performed. An attempt to calibrate the instrument before this will result in a Not

authorized message being displayed.
http://-/?-http://-/?-


58/148


http://-/?-http://-/?-


59/148

9240 Multi Channel Sodium Analyzer - Operating Instructions 53 of 142


3 Operat ing Instruct ions

o e:All screen display examples in the following sections are shown as black on a white

background for reasons of clarity, and do not necessarily reflect the actual colors used

on the instrument display.

3.1 Data Entry

3.1.1 Funct ion Keys

The display panel of the 9240 has 5 function keys (illustrated below) to allow menu optionselection, field selection, and data entry options.

The Esc key cancels data input or goes back to the previous screen.

The Enterkey validates the input and goes on to the next step.

The Up Arrowkeys select the option displayed immediately above them on thescreen.

When a screen requiring data entry is displayed, the first editable field is alwayshighlighted (as illustrated left in Fig 3-2below). To select other fields on the screen, scroll

through them by pressing the Up Arrowfunction key under the Selectoption. As eachfield is selected, the data element available for update is highlighted.

The same is also true when a menu is displayed (as illustrated right in Fig 3-2above). Inthis case, the first available option is always highlighted. Scroll to the required option bypressing the Up Arrowfunction key under the Selectoption.

Data entry is effected in a variety of ways depending upon the characteristics of the datafield being accessed. The following examples show the different ways of entering datawhen required.

Fig 3-1: Function Keys

Fig 3-2: Field and Menu Selection
http://-/?-http://-/?-


60/148

54 of 142 Operating Instructions - 9240 Multi Channel Sodium Analyzer


3.1.2 Numeric Fields

These fields require that the user enter one or more numeric values into a field. The typeof field determines the available input. In some fields only digits 0 through 9 would beavailable to select whereas in other fields the decimal point and/or minus sign may alsobe available.

The highlighted field in the example left is anumerical data element which requires inputfrom the user.

As this is a date field, only digits 0 through 9 willbe available for selection.

For data elements such as these, press the

function key under either the Up Arrowor DownArrowoptions to initiate data entry.

The first digit will then be highlighted, and a newRight Arrowoption replaces the Selectoptionat the bottom of the screen.

Press the function key under the Up Arrowoption to increase the value of the field by 1.

Press the function key under the Down Arrow

option to decrease the value of the field by 1. Press the function key under the Right Ar row

option to accept the currently displayed digit andmove one digit to the right (i.e. 5 in the exampleleft).

Press the Enterfunction key to accept the dataand move to the next input field.

It is not necessary to enter data into each of theavailable data elements that make up the datafield.

For example, if it was required to simply changethe date from the 25/07/07 to 25/08/07, thefollowing steps are all that are required:

Press the function key under the RightArrowoption until the digit 7 is highlighted.

Press the function key under the Up Arrowoption to increase the value of the field by 1to 8.

Press the Enterfunction key to accept thecomplete data field (25/08/07) and move tothe next data input field.
http://-/?-http://-/?-


61/148



3.1.3 Alphanumeric Fields

These fields require that the user enter one or more alphanumeric values into a field. Thetype of field determines the available input. In some fields only upper case alphacharacters may be allowed, in others upper and lower case alphanumeric characters mybe allowed, etc.

In this example, a name is required to give to thechannel. The complete alphanumeric characterset is available to choose from, including upperand lower case alpha characters.

Press the function key under either the UpArrowor Down Arrowoptions to initiate data

entry.

The first character will then be highlighted, and anew Right Arrowoption replaces the Selectoption at the bottom of the screen.

Press the function key under the Up ArroworDown Arrowoption to scroll through the list of

available characters. Press the function key under the Right Arrowoption to accept the currently displayedcharacter and move to the next character.

Press the Enterfunction key to accept thecomplete field and move to the next data inputfield.
http://-/?-http://-/?-


62/148



3.1.4 List Element Fields

This type of data entry is where a pre-defined list of available data values are availableto the user who must select the one which is applicable. Free-format text is not allowed.

3.1.5 Incremental Value Fields

These are fields where a value is displayed on the screen and the user has the option ofincreasing or decreasing the value.

3.1.6 Data Entry Input Errors

After entering data for a field, the system will verify the validity of the data. For example,if a date of 41/12/07 is entered, the system will not accept it. If any field is found to beinvalid, an appropriate error message will be displayed at the bottom of the screen andthe system reverts back to the original value for that field.

Press one of the Up Arrowfunction keys to acknowledge the error, and re-enter thedata, or Esc to acknowledge the error and exit the screen.

The highlighted field in the example left is a dataelement where there is only a limited number ofvalid options (i.e. the seven days of the week).

For data elements such as these, press thefunction key under the Up Arrowoption to scrollforward through the pre-defined list (in thisexample Tuesday, Wednesday, Thursday...) orpress the function key under the Down Arrowoption to scroll backward through the list.

When the required list element is displayed

press the Enterfunction key to accept the dataand move to the next data input field.

In this example, the whole value, rather than anindividual digit, is highlighted.

Use the Up Arrowfunction keys under the plusor minus symbols to increase or decrease thevalue by 1.

On completion press the Enterfunction key, toaccept the new value.
http://-/?-http://-/?-


63/148



3.2 Measurement Screens

3.2.1 Principal Display

An example of this display is given above. It shows the details of the current samplebeing measured. In this example, the measurement is for Channel 1 (channel name ofSample 1), but this will change as the analyzer switches to the next measurementchannel in the user-defined sequence.

The options at the bottom of the screen will include three of the following: Hist- Selecting this option will show the last measurements for each channel (see

Fig 3-4 on page 58as an example) along with the last grab sample andverification details.

Stop- Select this option to stop the current process on the analyzer. This could bea measurement, verification or grab sample process. The option is only availablewhen one of these processes is currently running. You will be asked forconfirmation (YESor NO) that you want to stop the process.

Start- Select this option to start the analyzer measurement process. This option isonly available if the analyzer has been stopped.

Menu- This will bring up the main menu screen as illustrated in Fig 3-6 onpage 60.

Alarm - This option will appear flashing on the screen if any alarms have been set.Selecting this option will take you to the alarms screen as illustrated in Fig 3-5 onpage 59.

Fig 3-3: Principal Measurement Screen
http://-/?-http://-/?-


64/148



3.2.2 Historical Display

This screen shows the last sample measurements for each channel, the last grab samplemeasurement and the last verification and gap measurements. The example illustratedis for a 4-channel analyzer. Underneath these measurements, the actual potentialbetween the glass electrode and the reference electrode is displayed along with thetemperature.

Select Mainto return to the main measurement screen.

Use the Selectoption to select one of the measurement channels for viewing and thenselect Graphto see the measurement details for that channel.

The measurement channel selected will then be displayed (as illustrated above forchannel 2) on a constant basis. The symbol to the right of the channel name indicateswhether or not this channel is currently being measured by the analyzer. A double rightarrow (example above left) indicates the channel is being measured, and the letter O(example above right) indicates another channel is currently being measured.

Note that the bar graph showing measurement progress is not displayed in this mode,unlike on the principal measurement screen.

Select Mainto return to the principal display.

Fig 3-4: Historical Measurement Screen
http://-/?-http://-/?-


65/148



3.2.3 Alarms Screen

Alarms S1-S4 relate to the four alarm outputs. This is followed by the warning alarm (W!)and the system alarm (small graphic). The message against each alarm will indicate OK(no problems encountered), INACTIVE(the alarm has been deactivated), or a messageindicating the reason for the alarm.

For information on setting up the alarms, please refer to Alarms on page 78. In addition,Table 5-4 on page 81lists all the possible error messages and indicates the type of alarm(warning or system).

If a manual alarm acceptance has been set up, select Enterto deactivate the alarms.

Select Hist.to go to the history display, or Esc to return to the measurement display.

Fig 3-5: Alarm Screen
http://-/?-http://-/?-


66/148


67/148



3.3.1 Verif ication

This option allows you to verify the measurementusing a solution of known sodium concentration.

Concentration of the known solution should be higherthan 20 ppb (100 ppb is recommended) to ensure apreparation step in a range with lower risks ofcontamination.

o e:This is a measurement verification cycle only, and no

adjustments to parameters or calibration data will bemade.

First enter the concentration of the verification solutionin the VALID. SOLfield.

Select STARTto commence the process.

The first step of this cycle allows the reactivation of theelectrode. The message SENSOR ACTIVATIONisdisplayed.

Select Yesto reactivate the sensor. Select Noif timeis more important than accuracy.

The reactivation process is automatically followed by arinsing of the overflow vessel and measuring cell usingthe process sample.

A progress bar (regularly refreshed) is displayedshowing the time remaining to complete theverification process.

Flow rate and measurements are also displayed.
http://-/?-http://-/?-


68/148



Upon completion of the rinsing step, the analyzer isready for the first manual step in the cycle.

Place the lid of the overflow vessel on the side andpour approximately 200 mL of the solution into the

overflow vessel, as prompted on screen. Manualintroduction is complete when the sample overflows atthe back of the overflow vessel.

Place the lid back on top of the overflow vessel andselect

Documents

9240 Sodium Analyzer Operator Manual