3444.3445 TEMPERATURE HiTESTER

3444/3445

TEMPERATURE

HiTESTER

INSTRUCTION MANUAL

sharif_geraldizo

Tequipment

http://tequipment.net

Contents

Introduction iSafety Notes iiInspection ivNotes on Use v

Chapter 1 Summary 11.1 Product Summary 11.2 Names and Functions of Parts 3

Chapter 2 Prior to Use 92.1 Battery Loading and Replacement 10

Chapter 3 Making Measurements 133.1 Start and Complete Measurement 133.2 Target Size and Sighting 153.3 Setting Emissivity (ε) 163.4 Simple Method to Determine ε 183.5 Displaying MAX (MIN) Temperature 213.6 Using the Temperature HiTESTER

with a Personal Computer 22

Chapter 4 Specification 23

Chapter 5 Maintenance and Service 255.1 Troubleshooting 275.2 Questions and Answers

about Measurement 28

i―――――――――――――――――――――――――――

Introduction――――――――――――――――――――――――

Introduction

Thank you for purchasing this HIOKI "3444/3445TEMPERATURE HiTESTER." To get themaximum performance from the unit, please readthis manual first, and keep this at hand.

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Safety Notes――――――――――――――――――――――――

WARNING

Incorrect measurement procedures could result ininjury or death, as well as damage to theequipment. Please read this manual carefully andbe sure that you understand its contents beforeusing the equipment. The manufacturer disclaimsall responsibility for any accident or injury exceptthat resulting due to defect in its product.

In the manual, this mark indicatesexplanations which it is particularlyimportant that the user read before usingthe unit.

Indicates warnings relating to the laser.

Safety Notes

This Instruction Manual provides information andwarnings essential for operating this equipment in asafe manner and for maintaining it in safe operatingcondition. Before using this equipment, be sure tocarefully read the following safety notes.

Safety symbols

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Safety Notes――――――――――――――――――――――――

DANGER

Indicates that incorrect operationpresents extreme danger of accidentresulting in death or serious injury tothe user.　

WARNING

Indicates that incorrect operationpresents significant danger of accidentresulting in death or serious injury tothe user.　

CAUTIONIndicates that incorrect operationpresents possibility of injury to the useror damage to the equipment.

NOTEDenotes items of advice related toperformance of the equipment or to itscorrect operation.

The following symbols are used in this InstructionManual to indicate the relative importance ofcautions and warnings.　

・Accuracyrdg. (displayed or indicated value)This signifies the value actually being measured,i.e., the value that is currently indicated or displayedby the measuring instrument.

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Inspection――――――――――――――――――――――――

Inspection

・Check before useBefore using the unit, inspect it and check theoperation to make sure that the unit was notdamaged due to poor storage or transport conditions.If damage is found, contact your dealer or HIOKI

representative.

When you receive this product, before use, pleasecheck that no abnormality or damage has occurredduring delivery. In particular, be sure to check theaccessories, the liquid crystal display, the controlkeys, and the lens.In the unlikely event of damage, or if the unit doesnot function according to specification, you shouldimmediately contact the dealer from whom youbought the unit, or the nearest HIOKI servicefacility.

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Notes on Use――――――――――――――――――――――――

DANGER

･Operation of this unit according to anyprocedure not specified in this manual maycause explosion due to dangerous laserradiation.

･The 3444/3445 (Laboratory type unit) uses as alight source a semiconducting laser which emitsvisible light, and which conforms to JISstandard class 2 (JIS C6802). (Wavelength670nm, maximum power output 1 mW)Since there is considerable danger of this laserlight causing damage to the eyes, be verycareful not to direct this laser light into youreyes or those of another person.

･ Do not look directly into the laser light from theoptical system.

･ When measuring the temperature of an objectwhich has a mirror finish, be careful not to allowthe laser light beam to be reflected off thesurface into your eyes or those of anotherperson.

･ Do not allow the laser light beam to impingeupon any gas which can explode.

Notes on UseIn order to ensure safe operation and to obtainmaximum performance from the unit, observe thecautions listed below.

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Notes on Use――――――――――――――――――――――――

WARNING

･To prevent electric shock, do not allow the unitto become wet and do not use the unit whenyour hands are wet.

･Ensure that protective functions are fail-safe:that is to say, that if they fail they either preventthe unit from operating or give an indication toprevent unwitting operation.

CAUTION

･ Do not use the unit near any device whichgenerates strong electromagnetic radiation or neara static electrical charge, as these may causeerrors.

･ The unit should always be operated indoors in arange from 0℃ to 40℃ and 35% to 85% RH orless. Do not use the unit in direct sunlight, dustyconditions, or in the presence of corrosive gases.

･ Do not store or use the unit where it will beexposed to direct sunlight, high temperatures, highhumidity, or condensation. If exposed to suchconditions, the unit may be damaged, the insulationmay deteriorate, and the unit may no longer satisfyits specifications.

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Notes on Use――――――――――――――――――――――――

CAUTION

･ This unit has been constructed with some degree ofwater resistance, but if it is subjected to directcontact with water for a long period of time, watermay get into the unit. Further, water drops left onthe lens will cause measurement errors. Wipe offany water drops promptly.

･ Do not use the unit where it may be exposed tocorrosive or explosive gases. The unit may bedamaged, or explosion may occur.

･ To avoid damage to the unit, do not subject theequipment to vibrations or shocks during transportor handling. Be especially careful to avoid droppingthe equipment.

･ Do not point the lens at the sun or at any othersource of strong light. If you do, the sensor may bedamaged.

･ Do not contact the lens against the object whosetemperature is to be measured, or get it dirty, allowit to be scratched, or allow any foreign material toadhere to it. Doing so may cause errors.

NOTE ･ Before use, verify that no damage has occurred dueto careless storage or transport, and check theappearance and operation of the unit.

･ When the mark on the display is flashing, thebattery are low. Fit new battery.

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Notes on Use――――――――――――――――――――――――

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Chapter 1 Summary――――――――――――――――――――――――

Chapter 1Summary

1.1 Product Summary1. Theory of Measurement

Every object emits infrared energy in accordancewith its temperature. By measuring the amount ofthis radiant energy, it is possible to determine thetemperature of the emitting object.

2. About infraredInfrared radiation is a form of light (electromagneticradiation), and has the property that it passes easilythrough air, while it is easily absorbed by solidmatter.With an emission thermometer which operates bydetecting infrared radiation, accurate measurement ispossible, irrespective of the air temperature or themeasurement distance.

3. Emission Thermometer StructureInfrared radiation which has been emitted from theobject is focused upon an infrared radiation sensor,via an optical system which includes a lens which istransparent to infrared radiation, an 8μm cutonfilter, etc..

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Chapter 1 Summary――――――――――――――――――――――――

The output signal from the infrared radiation sensoris input to an electronic circuit along with theoutput signal from a standard temperature sensor.The electronic circuit calculates the objecttemperature while applying standard temperaturecompensation, thermal emissivity compensation,etc., and displays the result.

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Chapter 1 Summary――――――――――――――――――――――――

3444/3445　laboratory type unit

①Lens

②Laser port

Screw hole for camera tripod

Laser specification (spec.)and caution label

Battery box

Connector cover(inside: connectorfor interface pack)

1.2 Names and Functions of Parts

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Chapter 1 Summary――――――――――――――――――――――――

NOTE

Operating section

⑤Measure key

⑥Displayedresolution selectkey

③Mode selectkey

⑤OFF key

④Parameter adjustkeys

LCD display

･ Connect the cable provided with the optional 3909Interface Pack to the expansion box connector. Fordetails, please refer to the user instructions providedwith the 3909 INTERFACE PACK.

① LensInfrared rays from the object whose temperature isto be measured are received here.

② Laser marker beam emission openingsThe laser marker beams are emitted from here.

③ Mode select keyThis key displays the MAX/MIN-temperature or thepresent high and low readings during measurement.In addition, emissivity and analog voltage outputscale are also displayable when on HOLD.

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Chapter 1 Summary――――――――――――――――――――――――

NOTE ･ To use the analog voltage output function, anoptional interface pack is required.

④ Parameter adjust keysThese keys raise/lower emissivity and analog voltageoutput scale.・▼ key: Decreases・▲ key: IncreasesIf either of these Parameter adjust keys is helddown, the numerical value changes rapidly in theappropriate direction.

⑤ OFF keyPressing this key turns OFF the power.

⑥ MEAS keyEvery time the MEAS key is pressed, thethermometer toggles between the measurement orhold functions.There is no power switch.Pressing the MEAS key turns ON the power. Thepower cuts OFF 15 seconds after HOLD or SET isdisplayed (automatic power OFF).

The automatic power OFF function does not workduring measurement. Select HOLD. Power can alsobe turned off with the ■ key.

⑦ Displayed resolution select keyEvery time the / key is pressed, the displayedresolution, 1℃ or 0.1℃, is selected.

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Chapter 1 Summary――――――――――――――――――――――――

LCD displayMEAS indicator

ZERO/FS indicator

MAX/MINindicator

HOLD indicator

Laser indicator

Emissivityindicator

SET indicator

Battery indicator

Measured value

℃ indicator

LCD display・HOLD indicator : Displayed when the measured

value is displayed.・MEAS indicator : Displayed when measurement

is being carried out.・Laser indicator : Displayed when laser is not

emitted.Blinks when laser is beingemitted.

・ε indicator : Displayed when emissivity is beingset and displayed.

・SET indicator : Blinks when emissivity andanalog voltage output scale arebeing set.

・ZERO/FS indicatorZERO : Displayed when lower limit of analog

voltage output scale is being set.F.S. : Displayed when upper limit of analog

voltage output scale is being set.

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Chapter 1 Summary――――――――――――――――――――――――

NOTE ･ To use the analog voltage output function, anoptional interface pack is required.

・MAX/MIN indicatorMAX : max. temp. displayMIN : min. temp. display

・℃ indicator : Unit of centigrade.・ indicator : Blinks when battery needs to be

replaced.・Measured value : The entire display blinks when

the measurement value fallsoutside the measurement range(-50.0 to 500.0℃).

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Chapter 1 Summary――――――――――――――――――――――――

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Chapter 2 Prior to Use――――――――――――――――――――――――

Chapter 2Prior to Use

Prior to operating the thermometer, carry out thefollowing:

1. Attaching the accessory screwdriverAttach the accessoryscrewdriver to the hand strapso that it will not get lost.This screwdriver is used toremove the battery cover screws.Attaching the screwdriver

2. Attaching the hand strapAttach the hand strap to theinstrument to help prevent itsbeing dropped.

3. Loading the batteryPlace the battery correctly inthe battery box at the back ofmain body.For loading the battery, refer to "2.1 Battery loadingand replacement".

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rubber gasket

2.1 Battery Loading and Replacement･ The thermometer does not come with the battery

loaded. Load the battery according to the proceduredescribed below.

･ If the battery indicator starts to blink,promptly replace the battery.

･ If the main body is wet, be sure to wipe off thewater, set the battery box facing downward so thatany water in the joint will not enter the case, andthen remove the battery cover.Dry battery used : Manganese battery 6F22 or alkali

battery 6LR611. Remove the battery cover.

Loosen the screws ofthe battery cover atthe back of the mainbody with theaccessory screwdriverand remove thebattery cover.

2. Replace thebattery.Remove the oldbattery.Check the polarity (+ or -) of the new battery, andload it correctly.

3. Close the battery cover.After the battery is loaded, close the battery cover,and tighten the screws evenly and firmly.

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DANGER

When changing the battery, be careful not topress the MEAS key by mistake.It is very dangerous to allow the laser beam toshine into your eyes or those of another person.Also, after changing the battery, be sure to closethe cover before using the unit.

WARNING

･ When changing the battery, be sure to fit thebattery the proper way around (i.e. with thecorrect polarity).

･ Do not short circuit the old exhausted battery orthrow them into a fire; they might explode.

･ Dispose of the old exhausted battery in anapproved waste disposal facility.

CAUTION

･ Take care not to get the wire caught in the batterycover.

･ Do not close the battery cover if the rubber gasketis dirty or twisted. Otherwise, the water-resistanceof the instruments main body will not be maintained.

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NOTE ･ When the battery is removed, various set values arelost. When replacing the battery, set the emissivityand analog voltage output scale. (Refer to "3.3Setting emissivity (ε)". To use the analog voltageoutput function, an optional interface pack isrequired. Refer to the instruction manual for moreinformation about this interface pack.)

･ When not in use for a long time, to prevent possiblecorrosion caused by battery leakage, remove thebattery before storage.

･ The battery included with 3444/3445 have a shorttime.

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Chapter 3 Making Measurements――――――――――――――――――――――――

NOTE

Chapter 3Making

Measurements

3.1 Start and Complete Measurement1. When the power is off,

pressing the MEAS keyturns on the power.The values and settings onthe LCD display return tothe state before the powerwas last turned off.

･ If, from the power off condition, the MEAS key isheld down for more than one second, measurementstarts.

2. Point the lens at the object whose temperature is tobe measured.

3. Press the MEAS key.Measurement is performed as long as the MEAS keyis kept pressed. While the MEAS key is beingpressed, the laser sighting beam is emitted so youcan aim it at the object.Releasing the MEAS key turns off the laser indicatoreven measurement is continued.

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DANGER

With the 3444/3445, whenever the indication isflashing, the laser marker beam is being emitted.Exercise extreme care not to allow the lasermarker beam to enter your eyes (because of thislaser light causing damage to the eyes) or thoseof another person.

NOTE

4. Read the display.

5. Complete measurement.When the MEAS key ispressed again duringmeasurement,measurement is completed,and the measured value issaved (HOLD).

･ When the measurement value is out of themeasurement temperature range (-50.0 to 500.0℃),the display will flash.

6. Turn OFF power.Pressing the ■ key turnsOFF the power.While HOLD is lit, theautomatic power OFFfunction works afterapprox. 15 seconds to turnOFF the power.

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NOTE

Sighting pitch

Target size

Distance

distance 0.5 m 1 m 1.5 m 2 m

Target size φ20 mm φ24 mm φ48mm φ80 mm

Sightingpitch

34 mm 41 mm 48 mm 55 mm

3444

3.2 Target Size and Sighting

･ Although the field of measurement and the sightingalmost coincide, actually the field of measurementcorresponds to the diameter for 90% opticalresponse. The object whose temperature is to bemeasured needs to be larger than the measurementdiameter by an adequate margin‐at least 1.5 to 2times larger.

･ The sighting beam must encompass the area to bemeasured up to the max. measurement distance of1.5 meters.

･ Even if the measurement distance is greater than 2meters, temperature is displayed as a mean value ofthe target size if there is no substance to absorb orinterrupt the infrared ray from the object beingmeasured.

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Sighting pitch

Target sizeDistance

3445

distance 73 mm 100 mm 150 mm 200 mm

Target size φ2.0±1mm φ8 mm φ20 mm φ33 mm

Sightingpitch

0 mm 10 mm 28 mm 47 mm

3.3 Setting Emissivity (ε)Each substance has particular emissivity. Precisemeasurement requires appropriate setting.

1. Displaying emissivity(ε)Press the M key severaltimes in the HOLD stateto display emissivity.ε will light and SET willblink.

2. Setting emissivity (ε)

Numerals can be changedwith the ▽ △ key.

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Substance Thermalemissivity

Substance Thermalemissivity

Asphalt 0.90 to 0.98 Charcoal(powder)

0.96

Concrete 0.94 Lacquer 0.80 to 0.95Cement 0.96 Lacquer (matt) 0.97Sand 0.90 Rubber (black) 0.94Earth 0.92 to 0.96 Plastic 0.85Water 0.92 to 0.96 Timber 0.90Ice 0.96 to 0.98 Paper 0.70 to 0.94Snow 0.83 Aluminium

oxides0.76

Glass 0.90 to 0.95 Chromiumoxides

0.81

Ceramic 0.90 to 0.94 Copper oxides 0.78Marble 0.94 Iron oxides 0.78 to 0.82Fluorite 0.30 to 0.40 Nickel oxides 0.90Plaster 0.80 to 0.90 Titanium

oxides0.40 to 0.60

Mortar 0.89 to 0.91 Zinc oxides 0.11 to 0.28Brick (red) 0.93 to 0.96 Brass oxides 0.56 to 0.64Textiles 0.90 Uneven

bronzesurfaces

0.55

Cloth (black) 0.98 Rolledstainless steel

0.45

Human skin 0.98 Heavily rustediron

0.69

Leather 0.75 to 0.80

3. Completing setting ofemissivity (ε)Press the MEAS key tocomplete the setting.Measurement can bestarted immediately.

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NOTE

3.4 Simple Method to Determine ε

･ Variations in the surface condition and color of theobject whose temperature is to be measured maycause the thermal emissivity ε to be somewhatdifferent from the values in the above table. If anaccurate temperature measurement is desired for anobject whose thermal emissivity is not known, blackbody tape or black body spray (sold separately)should be used. In this case the setting for thermalemissivity (ε) should be the value indicated onblack body tape or black body spray.

If the setting of emissivity is changed, thethermometer recalculates the emissivity according tothe emissivity after the HOLD value is set.Using either black-body tape or black-body spraymakes it easy to determine the emissivity of theobject to be measured. Black-body tape and black-body spray are available from HIOKI as extra-costoptions.

1. Cover the object to be measured with black-bodytape (or spray), and heat it to the appropriatetemperature, i.e., room temperature +20℃ or more.Keep the temperature as constant as possible.(The emissivity can be determined most accuratelywhen the temperature of the object is high.)

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2. Set the 3444/3445 valueof ε to the emissivity ofthe black-body tape.

3. Measure the temperatureof the portion covered bythe black-body tape withthis unit and record thisvalue. (This is used instep 6.)

4. Then measure a portionnot covered by the black-body tape that is as closeas possible to the portionmeasured in the previousstep 3. Release the MEASkey to hold the measuredvalue.

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NOTE

5. Press the M key severaltimes to select theemissivity setting screen.

6. Press the ▼ or the ▲ keyto change the ε valueuntil the temperaturebecomes the valueobtained in (3). The ε

value at this time isemissivity of the object tobe measured.

･ When using the optional black-body spray instead ofblack-body tape, determine the emissivity of theobject using the same method. In this case, set thevalue mentioned on the label of black-body spray tothe ε value of step 2.

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3.5 Displaying MAX (MIN) Temperature1. Displaying MAX/MIN temperature

Pressing the M keydisplays the maximum(minimum) temperature inthe order of MAX →

MIN.In HOLD mode, the MAX(MIN) temp. of theprevious measurement isdisplayed.In MEAS mode, the present MAX (MIN) temp. isdisplayed.

2. Releasing MAX/MIN displayPress the M key severaltimes until no setting isdisplayed.

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3.6 Using the Temperature HiTESTERwith a Personal Computer

Using the optional 3909 Interface Pack, you cantransfer measurements stored in the 3444/3445memory to a personal computer for processing.The 3909 Interface Pack consists of a modularcable, an expansion box, and the TEMP softwareutility for loading data into the PC and saving it tofloppy disk.

1. Using the 3909 modular cable, expansion box,and an RS-232C null-modem cable (notincluded), connect the 3444/3445 to the serialport on your personal computer.

2. Start up the 3909 TEMP utility (data importsoftware).The TEMP utility makes it easy to transfer data andmanage it on your personal computer.Data can also be imported into for processing Excel.Excel is a registered trademark of MicrosoftCorporation.

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Chapter 4 Specification――――――――――――――――――――――――

Product type 3444/3445 Temperature HiTester(Laboratory Type)

Detector / optical lens thermopile / siliconMeasurementwavelength

8 to 16 μm

Measurementtemperature range

-50.0 to 500.0℃

Display resolution 0.1℃ / 1℃Guaranteed accuracyperiod 1 yearAccuracy ofmeasurement

200.1 to 500.0℃0.0 to 200.0℃-50.0 to -0.1℃

±1% rdg.±2℃±10%rdg. ±2℃ε=1.0, temperature of case 23±5℃,ambient humidity 55 %RH

Repeatability Resolution : 0.1℃±0.5℃ (0.0 to 500.0℃)±1℃ (-50.0 to -0.1℃)

Resolution : 1℃±1℃ (0 to 500℃)±2℃ (-50 to -1℃)

Response time Resolution : 0.1℃Max. 1.6 s (95% response)

Resolution : 1℃Max. 0.7 s (95% response)

Target size 344424±3 mm/m (90% energy limit)

34452.5±1 mm/73 mm (90% energylimit)

Sighting 2-beam laser marker (class 2)

Chapter 4Specification

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Chapter 4 Specification――――――――――――――――――――――――

Thermal emissivitycompensation

0.10 to 1.00

Auto power off approx. 15 sec. (HOLD and SETmode)

Sampling rate 1.25 times/secondOther functions MAX/MIN values displayable.

Analog voltage output (0 to 1 V)RS-232C interface : *1

Power source Rated supply voltage 9 VDC×16F22 manganese battery×16LR61 alkaline battery×1

Maximum rated power 252mVA (max.)Battery life Approx.20 hours under continuous

operation a t sighted lighting (alkalibattery)

Ambient temperatureand humidity for use

0 to 40℃,35 to 85% RH; no condensation

Storage temperature -20 to 55℃; no condensationLocation for use Indoor, altitude up to 2000 mmDimensions 47 W×200 H×48 D mm approx.Mass 280 g approx. (excluding battery)Dustproof, waterproof IP54 : *2Applicable standards EMC:

EN61326:1997+A1:1998+A2:2001+A3:2003

Accessories supplied instruction manual , Carrying case,Hand Strap, 6F22 manganesebattery, screwdriver (for remove thebattery cover)

Options 3909 INTERFACE PACK, Blackbody tape, Black body spray, ACAdapter (AC-10)

*1 : To use optional voltage output and RS-232Cinterface, an optional interface pack is required.

*2 : IP54:No harmful influence when splashed fromany direction(based on IEC529 (1989))

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Chapter 5 Maintenance and Service――――――――――――――――――――――――

WARNING

･ Do not attempt to adjust or repair the unit withthe case open. Such adjustments or repairsshould only be made by a technician who fullyunderstands the dangers involved.

･ If the protective functions of the unit aredamaged, either remove the unit from service orpost warnings to prevent others from using theunit inadvertently.

Chapter 5Maintenance and

Service

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CAUTION

･ Gently wipe dirt from the surface of the unit with asoft cloth moistened with a small amount of wateror mild detergent. Do not try to clean the unit usingcleaners containing organic solvents such asbenzine, alcohol, acetone, ether, ketones, thinners,or gasoline. They may cause discoloration ordamage.

･ When not in use for a long time, to prevent possiblecorrosion caused by battery leakage, remove thebattery before storage.

･ If the unit is not functioning properly, check thebattery, the probe. If a problem is found, contactyour dealer or HIOKI representative. Pack the unitcarefully so that it will not be damaged duringtransport, and write a detailed description of theproblem. HIOKI cannot bear any responsibility fordamage that occurs during shipment.

･ If the lens is dirty, clean dust etc. off it using acamera lens cleaning tissue, blower or similarmeans.

･ If the lens is very dirty, clean it using a cotton budcontaining a small quantity of alcohol.

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Problem Cause Solution

No display ･ Batteriesexhausted, poorlycontacting, orwrongly inserted.

･ Change thebattery, or insertthem correctly.

Measuredtemperaturevalue peculiar

･ Lens dirty ･ Clean the lens.

･ A heat source suchas a hightemperature bodyis present closeby.

･ Intercept radiationfrom the heatsource by using aninsulation plate etc.

･ The thermalemissivity value isnot appropriate.

･ Set the thermalemissivity to anappropriate value.

℃ blinks ･ Operatingtemperature range(0 to 40℃)exceeded.

･ Use in operatingtemperature range.

The displayshows "Err"

･ The unit is faulty. ･ Contact a servicefacility.

5.1 Troubleshooting

･ ServiceIf the above shown solutions fail to solve theproblem, it is possible that your unit ismalfunctioning. Please contact your sales agent orthe manufacturer to arrange for repair.

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5.2 Questions and Answers aboutMeasurement

Q: Why can't I measure the temperature on the otherside of a glass pane?

A: Normal glass absorbs infrared radiation of thewavelength (8 to 16 μm) which this device uses fortemperature measurement. Therefore this devicecannot measure the temperature of an object on theother side of a glass sheet, but instead measures thetemperature of the glass sheet itself.

Q: Light is shining on an object. Why can't I measureits temperature accurately?

A: Since fluorescent light includes almost no infraredradiation, it has almost no effect upon normaltemperature measurement. However sunlight andincandescent lights emit radiation which includessubstantial amounts of the infrared radiation used bythis device for temperature measurement, andaccordingly may produce significant measurementdiscrepancies.

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Q: Why can't I measure the temperature of a gas,vapor, or flame?

A: Since gases, vapors, and flames are transparent toinfrared radiation, their temperatures cannot bemeasured in this way.

Q: Why can't I measure temperature through rain orfog?

A: Since rain and fog reflect and absorb infraredradiation, accurate measurement through them isimpossible.

Q: Doesn't the measurement distance affect theresulting measured value for temperature?

A: Air hardly absorbs at all infrared radiation of thewavelengths (8 to 16 μm) used by this device fortemperature measurement. Therefore accuratetemperature measurement is possible, irrespective ofthe measurement distance.

HIOKI 3444/3445 TEMPERATURE HiTESTERInstruction Manual

Publication date: September 2006 Revised edition 4Edited and published by HIOKI E.E. CORPORATIONTechnical Sales Support SectionAll inquiries to International Sales and MarketingDepartment81 Koizumi, Ueda, Nagano, 386-1192, JapanTEL: +81-268-28-0562 / FAX: +81-268-28-0568E-mail: [email protected] http://www.hioki.co.jp/

Printed in Japan 3444A980-04

･ All reasonable care has been taken in the production of thismanual, but if you find any points which are unclear or inerror, please contact your supplier or the International Salesand Marketing Department at HIOKI headquarters.

･ In the interests of product development, the contents of thismanual are subject to revision without prior notice.

･ Unauthorized reproduction or copying of this manual isprohibited.

HEAD OFFICE81 Koizumi, Ueda, Nagano 386-1192, JapanTEL +81-268-28-0562 / FAX +81-268-28-0568E-mail: [email protected]/URL http: //www.hioki.co.jp/

HIOKI USA CORPORATION6 Corporate Drive, Cranbury, NJ 08512, USATEL +1-609-409-9109 / FAX +1-609-409-9108

3444A980-04 06-09H

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