Extech Instruments IRT600 - Operation; Powering and Basic Controls; Taking Measurements; IR Surface Temperature Notes

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
o
C/
o
Funitsofmeasure
Pressthe
o
C/
o
F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.