Extech Instruments IR270 User manual



 UserManual



InfraRedThermometer

WithLaserPointerandHigh/LowAlarms



ModelIR270



AdditionalUserManualTranslationsavailableatwww.extech.com

2IR270‐en‐GB_V1.012/17

Introduction

ThankyouforselectingtheExtechIR270IRThermometer.TheIR270makesnon‐contact

(infrared)surfacetemperaturemeasurementsandincludesalaserpointerforconvenient

targeting.ThemeterswitchesONandstartsscanningsurfacetemperaturesassoonas youpull

thetrigger.Thisdeviceisshippedfullytestedandcalibratedand,withproperuse,willprovide

yearsofreliableservice.Pleasevisitourwebsite(www.extech.com)tocheckforthelatest

versionandtranslationsofthisUserManualandCustomerSupport.

Features

 Measuresnon‐contactsurfacetemperatureupto650°C(1202°F)

 Automaticranging

 12:1DistancetoSpotRatio(FieldofView)

 Laserpointertargeting

 AutomaticDataHoldwhentriggerisreleased

 High/Lowtemperaturealarms

 Maximum,Minimum,Average,andDifferentialdisplays

 20‐memorydatalogger

 Selectable

emissivity

 Displaybacklight

 Selectabletemperatureunits(°F/°C)

 Batterystatusindication

Safety

InternationalSafetySymbols

Thissymbol,adjacenttoanothersymbolorterminal,indicatestheusermustrefertothemanualfor

furtherinformation

Warnings

o Donotdirectlyorindirectlypointthelaserattheeyesofapersonorananimal

o Inspectfordamageorforanyshortageofpartsoraccessoriesbeforeuse

o Replacethebatteryimmediatelyafterthebatteryindicatorflashes

o Donotusethethermometernearexplosivegases,

steam,ordust

o Note that an object with high reflectivity will normally cause the

measured temperature value to read much lower than the actual

temperature

o UsethedeviceonlyasdescribedinthisUserManual

Cautions

Toavoidthermometerdamage,pleaseavoidthefollowinghazards:

o EMFfromweldingequipmentorelectro‐inductionheaters

o Staticelectricity

o Thermal shock caused by large or abrupt environmental temperature changes; wait 30 minutes to

allowthethermometertostabilizetonewenvironmentalconditions

o Donotusethisdevice

inexcessivelyhightemperatureenvironments



<1mW Output at 650nm

3IR270‐en‐GB_V1.012/17

Description



MeterDescription

1. BacklitmultifunctionLCD

2. Laser/Backlight/Logbutton

3. Uparrowbutton

4. Secondarydisplaymodebutton

5. Laserpointerlens

6. IRthermometerlens

7. Downarrowbutton

8. Trigger(pullandholdtoscansurfaces)

9. Batterycompartment(9V)

DisplayDescription

1. MeasurementScanmode.Theiconflasheswhilethetriggerispulled.Thedisplayedreading

representsthetemperatureofthescannedsurface

2. Dataholdmode.Readingisheldaftertriggerisreleased

3. Primarydisplay.Surfacetemperaturereading

4. Dataloggermode

5. Secondarydisplaymodeicons(EMS,MAX,MIN,DIF,



AVG,HAL,LAL)

6. SecondaryDisplayvalue

7. Batterystatusicon.Flasheswhenbatteryvoltageis

criticallylow.

8. Temperatureunits(selectable)

9. Emissivity.Selectablefrom0.10~1.00

10. Laserpointericon.Appearswhenlaserisenabled

4IR270‐en‐GB_V1.012/17

Operation

MeterPower

One9Vbatterypowersthemeter.PullthemetertriggertoswitchthemeterON.Ifthemeter

doesnotswitchON,pleasecheckthebattery(locatedinthemeterhandle);refertothe

Maintenancesectionformoreinformation.Thebatteryiconprovidesbatterystatus;replacethe

batteryassoonas

thebatteryiconflashes.ThemeterswitchesOFFsevensecondsafteryou

releasethetrigger(duringtheseven‐secondperiodthe lastreadingfreezesonthedisplay).

SurfaceTemperatureMeasurements

1. Holdthemeterbyitshandleandpointittowardthesurfaceundertest.

2. PullandholdthetriggertoturnthemeterONandtoscansurfacetemperatures.Withthe

triggerpulledtheSCANiconflashesintheupperleftareaofthedisplay.Readthemeasured

temperature

intheprimarydisplayarea.

3. If‘HI’appearsonthemainLCDdigits,thetemperaturereadingexceedsthehighrangeofthe

meter.

4. Releasethetrigger;thereadingwillholdforapproximately7seconds,andthenthemeterwill

automaticallyshutoff.

5. RefertotheFieldof

Viewsectionfordistancetotarget(spot)ratioconsiderations.

6. Themeterdefaultstotheprogrammedconditionsinusewhenthemeterwaslastswitched

OFF.Forexample,ifthelaserissettodefaulttoONandthetemperatureunitsaresetto

Fat

thetimetheunitisswitchedOFF,theunitwillswitchONandusethesamesettings.

LaserPointerandLCDBacklightDefaultModes

PresstheMbuttonorpull/releasethe triggertoturnthemeterON.Now,pressandreleasethe

buttontostepthroughthesedefaultconditions:

 LaserON/BacklightOFF

 LaserON/BacklightON

 LaserOFF/BacklightOFF

 LaserOFF/BacklightON

Whenyouenablethelaser,thelasericon

appearsontheupperleft.Tousethelaser,pulland

holdthetriggerandaimthelaserapproximatelyonehalfinchabovethepointoftest.

SelectingtheTemperatureUnitofMeasure (°C/°F) 

WiththemeterON,longpresstheMbuttontoswitchthetemperatureunits.Thedisplaybeeps

andswitchesbetween°Cand°F.

LocatingHotorColdSpots

Tolocateahotorcoldspotwhilescanning,aimthemeteroutsidetheareaofinterestthenscan

(inanupanddownmotion)untilthespotislocated.



5IR270‐en‐GB_V1.012/17

DistancetoSpotRatio(FieldofView)

The meter’s field of view is 12:1 (distance to spot ratio). For

example,if the meter is12 inches fromthetarget(spot), the

diameter of the target must be at least 1 inch. Refer to the

field of view diagram printed on the meter and reproduced

here.

Measuresurfacesfrom

amaximumdistanceof 2feetwheneverpossible.Themetercanmeasure

fromfurtherdistancesbutexternalsourcesoflightmayinterferewiththereadingsandthespot

sizemaybesolargethatitencompassesunintendedsurfaceareas.

It is necessaryto ensure that the sizeof the target

is larger than the spotsize. The smaller the

target,thecloserthedistanceshouldbe.

MeasurementConsiderations

1. Theobjectundertestshouldbelargerthanthespot(target)size(refertothefieldofview

sectionabove).

2. Removefrost,oil,grime,etc.,fromsurfacebeforetakingmeasurements.

3. Ifanobject'ssurfaceishighlyreflective,applymaskingtapeorflatblackpainttothesurface

before

measuring.

4. Themetermaynotmakeaccuratemeasurementsthroughtransparentsurfacessuchasglass.

5. Steam,dust,smoke,etc.canobscuremeasurements.

6. Themetercompensatesfordeviationsinambienttemperaturebutitcantakeupto30

minutesforthemetertoadjusttowideambienttemperaturechanges.

7. Tofindahotspot,aimthemeteroutsidetheareaofinterestthenscan(inanupanddown

motion)untilthehotspotislocated.

SecondaryDisplayModes

Thesecondarydisplayareaislocatedonthebottomofthemeter’sLCD.Youcanstepthroughthe

secondarydisplaymodesbysimplyshortpressingtheMODE(M)buttonfromapoweredONor

poweredOFFcondition.

Themodeiconappearsonthelowerleftanditsassociatedvalueappears

onthelowerright

(exceptforemissivity;itsvalueappearsontheupperright).Usethearrowbuttonstomake

changestoasettingwhereapplicable.Refertothesections,below,fordetailedinformationfor

eachmode.

Forbestresults,pullandreleasethetriggertoswitchthemeter

ON,usetheMbuttontoselect

thedesiredmode,andthenpullthetriggertobeginmeasuringwiththedesiredmodenowactive.

MaximumReading(MAX)

UsetheMbuttontosteptotheMAXparameter,thenpullandholdthetriggertostartscanning

surfacetemperatures.Thereadingonthelowerrightrepresentsthehighestreadingrecorded

duringthecurrentmeasurementscan.WhenpressingMfromapoweredOFFcondition,the

valueshownonthelowerrightisthehighestreadingrecordedduringthelastmeasurement

scanperformed.

6IR270‐en‐GB_V1.012/17

MinimumReading(MIN)

UsetheMbuttontosteptotheMINparameter,thenpullandholdthetriggertostartscanning

surfacetemperatures.Thereadingonthelowerrightrepresentsthelowestreadingrecorded

duringthecurrentmeasurementscan.WhenpressingMfromapoweredOFFcondition,the

valueshownonthelower

rightisthelowestreadingrecordedduringthelastmeasurementscan

performed.

DifferentialReading(DIF=MAXminusMIN)

UsetheMbuttontosteptotheDIFparameter,thenpullandholdthetriggertostartscanning

surfacetemperatures.Thereadingonthelowerrightrepresentsthedifferencebetweenthe

MAXandtheMINreadingsrecordedduringthecurrentmeasurementscan.WhenpressingM

fromapoweredOFFcondition,

thevalueshownonthelowerrightrepresentsthedifference

betweentheMAXandtheMINreadingsrecordedduringthelastmeasurementscanperformed.

AverageReading(AVG)

UsetheMbuttontosteptotheAVGparameter,thenpullandholdthetriggertostartscanning

surfacetemperatures.Thereadingonthelowerrightrepresentstheaverageofallreadings

recordedduringthecurrentmeasurementscan.WhenpressingMfromapoweredOFF

condition,thevalueshownonthelowerrightistheaverageofallreadingsrecordedduringthe

lastmeasurementscanperformed.

HighAlarmLimit(HAL)

UsetheMbuttontosteptotheHALparameter.UsethearrowbuttonstosettheHighAlarm

limit.Whilemeasuring,themeterbeepswhenthedisplayedreadingishigherthanthehigh

alarmsetting.Ifthebacklightison,thebacklightcolorwillturnredinahighalarmcondition.

LowAlarmLimit(LAL)

UsetheMbuttontosteptotheLALparameter.UsethearrowbuttonstosettheLowAlarm

limit.Whilemeasuring,themeterbeepswhenthedisplayedreadingislowerthanthelowalarm

setting.Ifthebacklightison,thebacklightcolorwillturnblueinalowalarmcondition.

DatalogMemory(LOG)

Themeterhastwentymemorylocations(1~20)inwhichtostoredtemperaturereadings.

1. FromapoweredONorOFFcondition,shortpresstheMbuttontosteptotheLOGmode

(theLOGdisplayiconismuchsmallerthantheothermodeicons)

2. Usethearrowsto

selectamemorylocationinwhichtostoreareading

3. Pullandholdthetriggertoscansurfacetemperatures

4. Pressthe



buttonatanytimetostorethereadingintheselectedmemorylocation.

Notethatyoucanpressthe



buttonafterthetriggerisreleasedinordertostorethe

heldreadingintotheselectedmemorylocation

5. Usethearrowbuttonstostepthroughandviewthereadingsstoredineachlocation.

Dashesindicatethatamemorylocationisempty

6. Areadingwillremaininamemorylocation

untiltheuseroverwritesthatmemorylocation

7IR270‐en‐GB_V1.012/17

EmissivityAdjust(EMS)

Use the M button to step to the EMS parameter. Use the arrow buttons to set the desired

emissivityvalue(shownontheupperright).Theemissivitycanbeadjustedbetween0.10~1.00.

RefertotheEmissivityConsiderationssectionformoreinformation.

EmissivityConsiderations

Emissivityrepresentsthe reflectivityofamaterial.Forthismeter,theemissivitycanbe adjusted

from 0.10~1.00 (see Emissivity Adjust section above). Most organic materials and painted or

oxidizedsurfaceshaveanemissivityofapproximately0.95.Ifpossible,maskingtapeorflatblack

paintshouldbeappliedtocoverthemeasuredsurface.

Waitaperiodoftimetoallowthetapeorpainttoreachthermalequilibriumwiththesurfaceof

thecoveredobject.Measurethetemperatureofthesurfacecoveredwithtapeorpaintonly.

EmissivityFactorsforCommonMaterials

Materialundertest Emissivity Materialundertest Emissivity

Asphalt 0.90to0.98 Cloth(black) 0.98

Concrete 0.94 Skin(human) 0.98

Cement 0.96 Leather 0.75to0.80

Sand 0.90 Charcoal(powder) 0.96

Soil 0.92to0.96 Lacquer 0.80to0.95

Water 0.92to0.96 Lacquer(matt) 0.97

Ice 0.96to0.98 Rubber(black) 0.94

Snow 0.83 Plastic 0.85to0.95

Glass 0.90to0.95 Timber 0.90

Ceramic 0.90to0.94 Paper 0.70to0.94

Marble 0.94 ChromiumOxides 0.81

Plaster 0.80to0.90 CopperOxides 0.78

Mortar 0.89to0.91 IronOxides 0.78to0.82

Brick 0.93to0.96 Textiles 0.90



8IR270‐en‐GB_V1.012/17

Maintenance

Cleaning

Usecompressedairtocleardustandotherparticlesfrom themeterlenses,andthencarefully

cleanwithamoistened(cleanwater)cottonswab.

Tocleanthemeterhousing,wipewithadamp,softcloth.Donotusesolventsorabrasives.Do

notimmersetheIR270inwaterorinother

liquids.

Troubleshooting

Symptom Problem Action

‘HI’displayicon Targettemperatureover‐range Selectatargetwithinrange

Batteryiconflashes Lowbatterypower Replacebattery

Out‐of‐focusor‘cloudy’

displayscreen

Lowbatterypower Replacebattery

Laserpointerdoesnot

appearwhenenabled

Defectivelaser Returnthemeterforservice

ReplacingBatteries

Whenthebatteryiconflashes,orwhenthemeterdoesnotswitchON,replacethebattery.

Thebatterycompartmentislocatedinthemeterhandle.Thebatterycompartmentcoveris

locatedjustbelowthetrigger.Prythecompartmentcoverloose(fromthetopofthe

compartment)toopenthecompartment.

Replace

the9Vbatteryfollowingcorrectpolarityandthenclosethebatterycompartment

beforeusingthemeter.



Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.

Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriatecollection

sites,theretailstorewherethebatterieswerepurchased,or

whereverbatteriesaresold.



Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.Theuserisobligatedtotake

end‐of‐lifedevicestoadesignatedcollectionpointforthedisposalofelectricalandelectronic

equipment.



9IR270‐en‐GB_V1.012/17

Specifications

InfraredThermometerSpecifications

Range/Resolution Autorange‐20~650

C(‐4~1202

F)/Resolution0.1°

Accuracy

‐20~‐2

C(‐4~28

F):±4°C(8°F)

‐2~94

C(28~200

F):±2.5°C(4.5°F)

94~204

C(200~400

F):±(1.0%rdg+1°C/2°F)

204~426

C(400~800

F):±(1.5%rdg+1°C/2°F)

426~650

C(800~1202

F):±(3%rdg+1°C/2°F)

Note:Accuracyisspecifiedforthefollowingambienttemperaturerange:23~25°C

(73~77°F),<80%RH



Emissivity 0.10~1.00adjustable

FieldofView 12:1(approx.)DistancetoSpotratio

Laserpower Class2<1mW,650nm±10nm

IRSpectralresponse 8~14µm

Repeatability ±0.5%rdgor±1°C(1.8°F);whicheverisgreater

GeneralSpecifications

Display BacklitLCDwithmultifunctionindicators

Responsetime 150ms

Out‐of‐rangeindicator ‘HI’forover‐range

Operatingtemperature 0°C~50°C(32°F~122°F)

Operatingrelativehumidity 10~90%RH

Storagetemperature‐10°C~60°C(14°F~140°F)

Storagerelativehumidity 80%RHmaximum

Powersupply One9Vbattery

AutomaticpowerOFF Afterapprox.7secondsoftriggerrelease

Weight 150g(5.3oz.)

Dimensions 180x107x40mm(7.1x4.2x1.6”)

Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

Extech Instruments IR270 User manual

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