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
oDonotdirectlyorindirectlypointthelaserattheeyesofapersonorananimal
oInspectfordamageorforanyshortageofpartsoraccessoriesbeforeuse
oReplacethebatteryimmediatelyafterthebatteryindicatorflashes
oDonotusethethermometernearexplosivegases,steam,ordust
oNotethatanobjectwithhighreflectivitywillnormallycausethe
measuredtemperaturevaluetoreadmuchlowerthantheactual
temperature
oUsethedeviceonlyasdescribedinthisUserManual
Cautions
Toavoidthermometerdamage,pleaseavoidthefollowinghazards:
oEMFfromweldingequipmentorelectro‐inductionheaters
oStaticelectricity
oThermalshockcausedbylargeorabruptenvironmentaltemperaturechanges;wait30minutesto
allowthethermometertostabilizetonewenvironmentalconditions
oDo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oF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~650oC(‐4~1202oF)/Resolution0.1°
Accuracy‐20~‐2oC(‐4~28oF):±4°C(8°F)
‐2~94oC(28~200oF):±2.5°C(4.5°F)
94~204oC(200~400oF):±(1.0%rdg+1°C/2°F)
204~426oC(400~800oF):±(1.5%rdg+1°C/2°F)
426~650oC(800~1202oF):±(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”)
Copyright©2017FLIRSystems,Inc.
Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform
www.extech.com