Extech Instruments IRT25 Manuel utilisateur



UserManual



MiniInfraRedThermometer

WithLaserPointerandHigh‐LowAlarms



ModelIRT25

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

EXTECHINSTRUMENTS

2IRT25‐en‐GB_V1.02/17

Introduction

CongratulationsonyourpurchaseoftheIRT25IRThermometer.Thisthermometermakesnon‐

contact(infrared)temperaturemeasurementsatthetouchofabutton.Thebuilt‐inlaserpointer

increasestargetaccuracywhilethebacklitLCDandhandypushbuttonscombineforconvenient,

ergonomicoperation.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ofthisUserGuide,ProductUpdates,andCustomerSupport.

Features

Measuresnon‐contactsurfacetemperatureupto371°C(400°F)

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

Single‐pointlasertargeting

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

DisplayBacklight

Maximum‐Minimumtemperaturefunction

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

Dynamicbatterystatusindication

Adjustableemissivity

AudibleandvisiblealarmindicationforHighandLowTemperatureAlarm

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batteries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Guide

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

EXTECHINSTRUMENTS

3IRT25‐en‐GB_V1.02/17

Description



MeterDescription

1. LCDDisplay

2. MAX‐MIN/DownButton

3. Backlight‐LaserPointer/UpButton

4. Laserpointerlens

5. IRThermometerlens

6. SETButton

7. MeasurementScanTrigger

8. BatteryCompartment

DisplayDescription

Emissivityvalueindication

Laserpointeractiveicon



Scanmode(activewhilethetriggerispulled;displayed

temperaturetracksthetemperatureofthescannedsurfaces)

Holdmode(displayedtemperaturefreezeswithtriggerrelease)

Maximum/Minimumtemperatureicons

Batterycapacityindicator(flasheswhenbatteryvoltageiscritical)

DisplayBacklighticon

Temperatureunits(°F/°C)

TemperatureAlarmiconsandaudiblealarmdisableicon

EXTECHINSTRUMENTS

4IRT25‐en‐GB_V1.02/17

Operation

MeterPower

Themeterispoweredbytwo1.5VAAbatteries.Withfreshbatteriesinstalled,themeter

switchesONwhenthetriggerispulled.Thebatteriesarelocatedinthemeterhandle;pullthe

batterycompartmentlidawayfromthebodyofthemetertoopen.RefertotheMaintenance

sectionformoreBatteryInstallationinstructions.Thebatteryiconprovidesbatterystatus

indication.Replacethebatteriesassoonasthebatterystatusiconflashes.

SurfaceTemperatureMeasurements

1. HoldthemeterbyitsHandleGripandpointittowardthesurfacetobemeasured.Readthe

FieldofViewsectionbelowfordistancetotarget(spot)ratioinformation.

2. PullandholdtheTriggertoturnthemeteronandbegintestinginScanmode.Thedisplay

willlightifthetwo1.5Vbatteriesaregood.Replacethebatteriesifthedisplaydoesnotlight.

3. ReleasetheTrigger;thereadingwillholdforapproximately9seconds,afterwhichthemeter

willautomaticallyshutoff.

4. Themeterdefaultstotheprogrammedconditionsinusewhenthemeterwaslastswitched

OFF.Forexample,ifthelaserisset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–ON/OFF

Pull the trigger and release.

PushandHOLDthe buttonforabout3secondstoswitchthelaserpointerONorOFF.

TheLasericonwillflashwhenthestatehaschanged.WhenthelaserisON,thelasericon will

appearontheLCD.Aimtheredlaserbeamapproximatelyahalfinchbelowthepointoftest

(pressingtheLaserbuttonagainturnsthelaseroff).

MAX‐MINMode

Pressthetriggerandrelease.

PresstheMAX‐MINbuttontoviewthemaximumtemperaturereading(MAX),pressagainto

viewthelowestreading(MIN).PressandholdtheMAX‐MINbuttontoswitchtheMAX‐MIN

modeoff.

DisplayBacklight

Pressthetriggerandrelease.

Pressthebacklightbutton momentarilytoswitchthebacklightONorOFF.

Over‐rangeIndicators(OLand‐OL)

Ifthetemperaturemeasurementexceeds779°F(415°C),thethermometerwilldisplayOLin

placeofatemperaturereading.Ifthetemperaturemeasurementisbelow‐25°C(‐13°F),the

thermometerwilldisplay‐OLinplaceofatemperaturereading.



EXTECHINSTRUMENTS

5IRT25‐en‐GB_V1.02/17

SettingMode

ReleasethetriggerandpresstheSETbuttontoaccesstheSettingMode.UsetheSETbuttonto

navigatethroughtheSettingModefieldsanduse(UP)andtheMAX‐MIN(DOWN)

buttonstomakechanges.Theavailableparametersarelistedbelow:

Emissivitysetting

°C/°Ftemperatureunitsselection

TemperatureAlarmAudibleBeeperEnable/Disable

HighTemperatureAlarmLimitsetting

LowTemperatureAlarmLimitsetting

Thecorrespondingparametericonwillflashwhenselected.ToexittheSettingMode,press

andholdtheSETbuttonfortwoseconds.

EmissivitySetting

The iconwillflashwhenselected.UsetheupandMAX‐MINdownbuttonsto

increaseordecreasetheemissivity(in0.01steps).Theemissivityrangeis0.10to1.00.Hold

theupordownbuttontorapidlyincreaseordecreasetheemissivityvalue.PresstheSET

buttontoconfirmandtosteptothenextoption.

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

Usethe upandMAX‐MINdownbuttonstoselect°Cor°F.PresstheSETbuttonto

confirmandtosteptothenextoption.

Enable/DisableAudibleTemperatureAlarm

Thisparameterisusedtoenable/disabletheaudibletemperaturealarm.Theiconwillflash

inthismode.

UsetheupandMAX‐MINdownbuttonstotogglethesetting.Whentheaudible

alarmisdisabled,thedisplaywillshow‘HIGHLOW’.Whentheaudiblealarmisenabled,the

displaywillshow.Whentheaudiblealarmisenabled,thebeeperisallowedto

soundwheneverthemeasuredtemperaturegoesbeyondthehighorlowtemperaturelimit

values.PresstheSETbuttontoconfirmandtosteptothenextoption.

HIGHTemperatureAlarmLimitSetting

UsetheupandMAX‐MINdownbuttonstoincreaseordecreasetheHighAlarm

TemperatureLimit(in0.1stepsfor°Cor0.2stepsfor°F).Holdingtheupordownbuttonwill

rapidlyincreaseordecreasetheHIGHlimitvalue.AbeepwillsoundiftheHIGHtemperature

valuereachestheLOWtemperaturevaluewhileprogramming.PresstheSETbuttonto

confirmandtosteptothenextoption.

LOWTemperatureAlarmLimitSetting

UsetheupandMAX‐MINdownbuttonstoincreaseordecreasetheLowAlarm

TemperatureLimit(in0.1stepsfor°Cor0.2stepsfor°F).Holdingdowntheupordown

buttonwillrapidlyincreaseordecreasetheLOWlimitvalue.AbeepwillsoundiftheLOW

temperaturevaluereachestheHIGHtemperaturevaluewhileprogramming.PresstheSET

buttontoconfirmandtosteptothenextoption.

EXTECHINSTRUMENTS

6IRT25‐en‐GB_V1.02/17

LocatingHotorColdSpots

Todetectahotorcoldspot,aimthethermometerataregionbeyondthetargetandthenscan

theentireregioninaslow,up/downmotion.



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24inches

fromthetarget(spot),thediameterofthetargetmustbeatleast2inches.Otherdistancesare

shownbelowinthefieldofviewdiagram.

Notethatmeasurementsshouldnormallybemadecloserthan2feetfromthetarget.Themeter

canmeasurefromfurtherdistancesbutthemeasurementmaybeaffectedbyexternalsources

oflight.Inaddition,thespotsizemaybesolargethatitencompassessurfaceareasnotintended

tobemeasured.



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.Seetheaccompanyingdiagram.



Emissivity

Emissivityrepresentstheenergyreflectivityofamaterial.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

afterequilibriumhasbeenachieved.

EXTECHINSTRUMENTS

7IRT25‐en‐GB_V1.02/17

MeasurementNotes

1. Theobjectundertestshouldbelargerthanthespot(target)sizecalculatedbythefieldof

viewdiagram.

2. Ifthesurfaceoftheobjectundertestiscoveredwithfrost,oil,grime,etc.,clean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.Itcan,however,takeupto

30minutesforthemetertoadjusttoextremelywideambienttemperaturechanges.

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

downmotion)untilthehotspotislocated.

Maintenance

Cleaning

Tocleanthelensesusecompressedairtocleardustandotherparticles,thencarefullyclean

withawetcottonswab.Thecottonswabshouldbemoistenedwithcleanwater.

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

notimmersetheIRT25inwaterorotherliquid.

Troubleshooting

SymptomProblemAction

OLdisplayTargettemperatureexceedsrangeSelectatargetwithinrange

‐OLdisplayTargettemperatureunder‐rangeSelectatargetwithinrange

BatteryiconflashesLowBatterypowerReplaceBatteries

BlankdisplayscreenLowbatterypowerCheckand/orreplacebatteries

NoLaserpointerLowbatteryorenvironmental

temperaturehigherthan40°C(104°F)

Replacethebatteries ormovethe

IRT25toanareawithalower

ambienttemperature

EXTECHINSTRUMENTS

8IRT25‐en‐GB_V1.02/17

ReplacingBatteries

Whenthebatteryiconflashes,orwhenthemeterdoesn’tswitchON,replacethebatteries.

Thebatterycompartmentislocatedinthehandlegrip.Thebatterycompartmentlidislocated

justbelowthetrigger.Prythecompartmentlidofftoreachthecompartment.

Replacethe1.5VAAbatteriesfollowingcorrectpolarityandthenclosethebatterycompartment

lid.

BatterySafetyNotes:Pleasedisposeofbatteriesresponsibly;neverdisposeofbatteriesinafire,

batteriesmayexplodeorleak.Ifthemeterisnottobeusedfor60daysormore,removethe

batteryandstoreseparately.Donotmixbatterytypesorfreshnesslevels;pleaseusebatteries

ofthesametypeandofthesamefreshnesslevel.



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.



EXTECHINSTRUMENTS

9IRT25‐en‐GB_V1.02/17

Specifications

InfraredThermometerSpecifications

Range/Resolution‐20.0to371.0oC(‐4.0to700.0oF)

Accuracy‐20~0oC(‐4~32oF):±5°C(9°F)

0~371oC(32~700oF)±2°C(3.6°F)or2%ofreading(whicheverisgreater)

Note:Accuracyisspecifiedforthefollowingambienttemperaturerange:

21to25°C(70to77°F)

EmissivityAdjustablefrom0.10to1.00

FieldofView12:1DistancetoSpotratio

LaserpowerLessthan1mW,630to670nm(wavelength)

Spectralresponse8to14µm(wavelength)

GeneralSpecifications

Display BacklitLCDdisplaywithfunctionindicators

Displayrate500msapprox.

OperatingTemperature 0°Cto40°C(32°Fto104°F)

OperatingHumidityMax.75%RH

PowerSupplyTwo1.5VAAAlkalinebatteries

AutomaticPowerOffMetershutsoffautomaticallyafter9seconds

Weight 226g(8.0oz.)

Dimensions172x97x46mm(6.8x3.8x1.8”)

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

ISO‐9001Certified

www.extech.com



Table des matières

Autres manuels Extech Instruments Thermomètre

Extech Instruments

Extech Instruments EA15 Manuel utilisateur

Extech Instruments

Extech Instruments RH200W Manuel utilisateur

Extech Instruments

Extech Instruments RH200W Manuel utilisateur

Extech Instruments

Extech Instruments RHM15 Manuel utilisateur

Extech Instruments

Extech Instruments EA11 Manuel utilisateur

Extech Instruments

Extech Instruments 42540A Manuel utilisateur

Extech Instruments

Extech Instruments EasyView EA20 Manuel utilisateur

Extech Instruments

Extech Instruments 42545-NIST Manuel utilisateur

Extech Instruments

Extech Instruments 445580 Manuel utilisateur

Extech Instruments

Extech Instruments EA10 Manuel utilisateur

Extech Instruments

Extech Instruments RH200W Manuel utilisateur

Extech Instruments

Extech Instruments SD200 Manuel utilisateur

Extech Instruments

Extech Instruments 42510A Manuel utilisateur

Extech Instruments

Extech Instruments IR100 Manuel utilisateur

Extech Instruments

Extech Instruments TM55 Manuel utilisateur

Extech Instruments

Extech Instruments TM200 Manuel utilisateur

Extech Instruments

Extech Instruments IR400 Manuel utilisateur

Extech Instruments

Extech Instruments 42560 Manuel utilisateur

Extech Instruments

Extech Instruments 42530 Manuel utilisateur

Extech Instruments

Extech Instruments 42535 Manuel utilisateur

Extech Instruments

Extech Instruments IR200 Manuel utilisateur

Extech Instruments

Extech Instruments 42580 Manuel utilisateur

Extech Instruments

Extech Instruments 39240 Manuel utilisateur

Extech Instruments

Extech Instruments 42555 Manuel utilisateur

Manuels Thermomètre populaires d'autres marques

Delton

Delton 981A Manuel utilisateur

Baker

Baker MM2P Manuel utilisateur

Tarmo

Tarmo 320281 Manuel utilisateur

Citizen

Citizen CTD 504 Manuel utilisateur

TFA

TFA 14.1500 Manuel utilisateur

Vive

Vive DMD1010 Manuel utilisateur

Gotemp

Gotemp THB4002 Manuel utilisateur

GREISINGER

GREISINGER G 1202 Manuel utilisateur

Amprobe

Amprobe TMD-53W Manuel utilisateur

Trotec

Trotec BP10 Manuel utilisateur

Radiance instruments

Radiance instruments RT616 Series Manuel utilisateur

Eurolec

Eurolec IR151 Manuel utilisateur

Scaneo

Scaneo TS42B Manuel utilisateur

Sper scientific

Sper scientific 800043 Manuel utilisateur

Microlife

Microlife NC 200 Mode d’emploi

Motorola

Motorola MBP69SN Guide de configuration

The MeatStick

The MeatStick The MeatStick Manuel utilisateur

Hama

Hama TH35-A Manuel utilisateur