Extech Instruments IRT600 User manual

USERGUIDE

DewPointTemperatureDetector

withLaserPointer



MODELIRT600

IRT600‐EU‐ENv1.49/132

Introduction

CongratulationsonyourpurchaseoftheModelIRT600DewPointTemperatureDetector!The

IRT600iscapableofdisplayingAirTemperature(AT),SurfaceTemperature(ST),Relative

Humidity(RH),andDewPointTemperature(DP)andcananalyzethepotentialformildew.The

LEDlampabovetheLCDdisplaychangescolortoindicatethepotentialformildew:green(no

mildew),yelloworamber(lowtomoderateprobabilityofmildew),andred(highprobabilityof

mildew).



TheIRT600measuresSurfaceTemperatureusinganinfrared(IR)sensorandincludesdualred

laserpointersforimprovedtargeting.TheIRsensorhasa12:1DistancetoSpotratio.Thismeans

thatatarget30cmawayfromthemeterhasaspotdiameterof1.25cm,atarget45cmawayhas

aspotdiameterof3.75cm,andsoon.Theclosertothetarget,thesmallerthespotsizeandthe

furtheraway,thelargerthespotsize(verymuchlikeaflashlightbeambehaveswithregardto

distance‐to‐spotratio).



TheAirTemperatureandRelativeHumidityaremeasuredbytheinternalsensorsatthetopof

themeter.DewPointTemperatureiscalculatedusingAirTemperatureandRelativeHumidity

measurements.MildewanalysisisbasedoncalculationsmadefromAirTemperature,Surface

Temperature,DewPointTemperature,andRelativeHumidityvalues.



Thismeterisshippedfullytestedandcalibratedand,withproperuse,willprovideyearsof

reliableservice.Pleasevisitthewebsitewww.extech.comforthelatestversionofthisUser

Guide,CustomerSupport,andinformationonotherproductsofferedbyExtechInstrumentsand

FLIRSystems.

Safety



Useextremecautionwhenthelaserpointerbeamison

Donotpointthebeamtowardanyone’seyeorallowthe

beamtostriketheeyefromareflectivesurface.

Donotusethelasernearexplosivegasesorineither

potentiallyexplosiveareas.

Donotcleanthelaserwithanycorrosiveacidsorliquids.

Useanappropriate(9V)batterytopowerthemeter.



IRT600‐EU‐ENv1.49/133

MeterDescription



1. Multi‐colormildewstatusindicator

2. LCDdisplay

3. MODEbutton

4. BacklightandLaserpointerbutton

5. Batterycompartment

6. Measurementtrigger

7. Temperatureunitsbutton

8. LaserPointersandInfraredsensor

9. Humidity/Temperaturesensors

Display Description



1. Emissivitysetting(fixedat0.95)

2. AirTemperatureicon

3. LaserPointerONicon

4. Batterystatus

5. Bargraphrangemaximum(100%)

6. RH,AirTemperatureorDewPointreading

7. Unitofmeasure

8. Surfacetemperaturereading

9. Bargraph

10. Bargraphrangeminimum(0%)

IRT600‐EU‐ENv1.49/134

Operation

PoweringtheMeter

PressthetriggeroncetopowerthemeterONorOFF.



TurntheBacklightOn/Off

Pressthebacklight/laserbuttontoturnthebacklightonoroff.



SelectingoC/oFunitsofmeasure

PresstheoC/oFkeytoselectthedesiredtemperatureunitofmeasure.



TurntheTwoRedLaserPointersOn/Off

Pressthebacklight/laserbuttontoturnthelaserpointersONorOFF.



TakingMeasurements

TheIRT600candisplayDewPointTemperature(DP),AirTemperature(AT),InfraredSurface

Temperature(ST),andRelativeHumidity(%RH).Thebottomdisplaydigitsalwaysshowthe

SurfaceTemperaturereading.TheupperdisplaydigitsalternatelyshowAirTemperature,Dew

PointTemperature,orRelativeHumiditydependingonthemodethatisselected.Themulti‐color

statusLEDlight(locatedabovetheLCDdisplay)changescolortoindicatethelikelihoodofmildew

(seethe‘DetectingMildew’section).



1. PressthetriggeroncefirmlytoswitchthemeterON.

2. UsetheMODEbuttontoselectAirTemperature,DewPointTemperature,orRelative

Humidity%fortheupperdisplaydigits.Themeterwillrememberthedisplayselection

afterthemeterisswitchedOFF.

3. ForSurfaceTemperaturemeasurements,pointthemeter

towardthesurfaceundertest.Thelowerdisplaydigitsshow

thetemperatureofthesurfaceundertest.Forprecise

targeting,usethedualredlaserpointers(thebacklight/laser

pointerbuttonswitchesthepointersONorOFF).TheIR

sensorhasa12:1distance‐to‐spotratio(seeaccompanying

‘fieldofview’diagram).Forexample,ata30cmdistance,

themeasuredspotsizeis2.5cm.

4. PressthetriggerfirmlyagaintoswitchthemeterOFF.



IRSurfaceTemperatureMeasurementNotes

1. Theobjectundertestshouldbelargerthanthespot

(target)sizecalculatedbythefieldofviewdiagram(printed

onthesideofthemeterandinthisguide).

2. Beforemeasuring,besuretocleansurfacesthatare

coveredwithfrost,oil,grime,etc.

IRT600‐EU‐ENv1.49/135

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

surfacebeforemeasuring.Allowtimeforthepaintortapetoadjusttothetemperatureof

thesurfaceitiscovering.

4. Measurementscannotbemadethroughglass.

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

6. Themeterautomaticallycompensatesfordeviationsinambienttemperature.However,it

cantakeupto30minutesforthemetertoadjusttoextremelywidechanges.

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

anddownorsidetosidemotion)untilthehotspotislocated.

DetectingMildew

Todetectmildew,takeaSurfaceTemperaturemeasurementasdescribedearlierbypointingthe

meteratthedesiredobject(s)andmovingthemeterslowly,notingthesurfacetemperatureof

theobject(s)undertest.



AlsonotetheAirTemperature,DewPointTemperatureandRelativeHumiditytolearnhowthese

relationshipsaffectmildewpotential.Themeterautomaticallydetectsthelikelihoodofmildew;

nonethelessitisusefultoseehowonemeasurementaffectsanotherandhowthecombinations

ofthesemeasurementsandcalculationsleadtoanaccuratemildewanalysis.



ThelikelihoodofmildewishighertheclosertheSurfaceTemperatureistotheDewPoint

Temperature.(TheDewPointtemperaturetakestheRelativeHumiditymeasurementinto

account,sincethehighertheRH,thehighertheDewPointTemperature).



ThemeterusestheAirTemperature(AT)andtheDewPointTemperature(DP)valuestocreatea

rangeoftemperaturesthatisdividedintothirds(seeaccompanyingdiagram).Theupper

boundaryistheAirTemperature(AT)andthelowerboundaryistheDewPointTemperature(DP).



IRT600‐EU‐ENv1.49/136



Ifthesurfacetemperaturelieswithintheupperthirdtemperaturerangebetweentheair

temperatureandthedewpointtemperature,theLEDwillbegreen,indicatingthatthesurface

temperatureandhumidityarebothnormalandmildewisunlikely(seediagram).



Ifthesurfacetemperaturelieswithinthemiddlethirdtemperaturerangebetweentheair

temperatureandthedewpointtemperature,theLEDwillbeyellow(amber),indicatingthat

thereisalowtomoderatepotentialformildew.



Ifthesurfacetemperaturelieswithinthebottomthirdtemperaturerangebetweentheair

temperatureandthedewpointtemperature,theLEDwillbered,indicatingthatthereisahigh

probabilityofmildewpresentonthesurfaceundertest.



Forexample,iftheairtemperatureis25°Candtherelativehumidityis50%,thedewpoint

temperatureis13.8°C.Inthisexample,thelightwouldbegreenwhenthesurfacetemperatureis

between25and21.3°C;ayellowlightwouldindicateasurfacetemperaturebetween21.2and

17.4°C;andaredlightwouldindicateasurfacetemperaturebetween17.3and13.8°C.



BatteryReplacement



Toreplacethebattery:



1. Openthebatterycover(locatedonthehandlegrip)

2. Carefullyremovethebattery

3. Installnew9Vbattery

4. Closethebatterycover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.



BatterySafetyReminders

oNeverdisposeofbatteriesinafire.Batteriesmayexplodeorleak.

oRemovebatteryfrommeterifitistobestoredforalongtimeperiod.



IRT600‐EU‐ENv1.49/137

Specifications



MainDisplay BacklitLCDwithmulti‐functionindicators

Three‐colorLEDindicatorGreen,Amber,andRedtoindicatemildewpotential

Responsetime <1second

DiodeLaserPointersOutput<1mW,Wavelength630~670nm,Class2(II)Laserproduct

Emissivity0.95(fixed)

IRSpectralResponse8‐14µm

IRSensorFieldofView12:1(Distance‐to‐SpotRatio)

Operatingtemperature0oCto50oC(32oFto122oF)

Storagetemperature‐20oCto60oC(‐4oFto140oF)

Relativehumidity10%~90%RHoperating,<80%RHstorage

Powersupply9Vbattery,NEDA1604AorIEC6LR61,orequivalent

Weight163g(5.7oz.)

Dimensions168x82x58mm(6.6x3.2x2.3”)



RangeResolutionAccuracy

AirTemperature‐50to350°C(‐58to662°F)

Surfacetemperature‐50to350°C(‐58to662°F)

DewPointTemperature‐30to100°C(‐22to212°F)

0.1°F/C



±3.5°C(6.3°F)

‐50to20°C(‐58to32°F)

±(1%rdg+1.5°C[2.7°F])

20to350°C(32to662°F)

RelativeHumidity0to100%0.1°%±3.5%(20%to80%)

Note:Accuracyisgivenat64°Fto82°F(18°Cto28°C);<80%RH



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

ISO‐9001Certified

www.extech.com

Table of contents

Other Extech Instruments Thermometer manuals

Extech Instruments

Extech Instruments RH200W User manual

Extech Instruments

Extech Instruments Extech 470 User manual

Extech Instruments

Extech Instruments 421508 User manual

Extech Instruments

Extech Instruments 42545A User manual

Extech Instruments

Extech Instruments RH101 User manual

Extech Instruments

Extech Instruments SD500 User manual

Extech Instruments

Extech Instruments 42570 User manual

Extech Instruments

Extech Instruments 407907 User manual

Extech Instruments

Extech Instruments SD200 User manual

Extech Instruments

Extech Instruments 42511 User manual

Extech Instruments

Extech Instruments RH250W User manual

Extech Instruments

Extech Instruments TM55 User manual

Extech Instruments

Extech Instruments RH200W User manual

Extech Instruments

Extech Instruments EasyView EA20 User manual

Extech Instruments

Extech Instruments 42515 User manual

Extech Instruments

Extech Instruments 42545 User manual

Extech Instruments

Extech Instruments IR400 User manual

Extech Instruments

Extech Instruments EA11 User manual

Extech Instruments

Extech Instruments IR255 User manual

Extech Instruments

Extech Instruments SDL200 User manual

Extech Instruments

Extech Instruments K.J.E.T. 422324 User manual

Extech Instruments

Extech Instruments 42500 User manual

Extech Instruments

Extech Instruments EA15 User manual

Extech Instruments

Extech Instruments 42540 User manual

Popular Thermometer manuals by other brands

Delton

Delton 981A instruction manual

Baker

Baker MM2P instruction manual

Tarmo

Tarmo 320281 manual

Citizen

Citizen CTD 504 instruction manual

TFA

TFA 14.1500 instruction manual

Vive

Vive DMD1010 user manual

Gotemp

Gotemp THB4002 user guide

GREISINGER

GREISINGER G 1202 Quick reference guide

Amprobe

Amprobe TMD-53W user manual

Trotec

Trotec BP10 operating manual

Radiance instruments

Radiance instruments RT616 Series product manual

Eurolec

Eurolec IR151 operating instructions

Scaneo

Scaneo TS42B instruction manual

Sper scientific

Sper scientific 800043 instruction manual

Microlife

Microlife NC 200 Operating instructions manual

Motorola

Motorola MBP69SN General questions

The MeatStick

The MeatStick The MeatStick quick start guide

Hama

Hama TH35-A operating instructions