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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).



Extech Instruments IRT600 User Manual

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