FLIR TG54 - Understanding Distance-To-Spot Ratio

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FLIRTG54_TG56UserManual12DocumentIdentifier:TG54_TG56‐en‐US_AA
10,or20seconds),afterwhichthemeterswitchesoffautomatically.TosettheAuto
PowerOFFperiodpleaserefertoSection6,ProgrammingMenu.
6. Thelaserpointertargetsthemeasurement‘spot’.TheLaserpointercanbedeactivatedin
theProgrammingmenu.
7. AtthispointitisimportanttoreadSection9.2,InfraredEnergyandIRThermometer
Theory,andSection5.3,Distance‐To‐SpotRatio.
5.3Distance‐To‐SpotRatio
TheTG54Distance‐to‐Spotratio(D:S)is24:1
Fromadistanceof24”theTG54measurestheaveragetemperatureofaspot1”indiameter.
Fromadistanceof48”thespotdiameteris2”andfromadistanceof72”thespotdiameter
is3”.Thetemperatureisshownatthecenterofthedisplay.RefertoFigs.5‐1(a)belowfor
illustrativeexamplesofDistancetoSpotratio.
TheTG56Distance‐to‐Spotratio(D:S)is30:1
Fromadistanceof30”theTG56measurestheaveragetemperatureofaspot1”indiameter.
Fromadistanceof60”thespotdiameteris2”andfromadistanceof90”the spotdiameter
is3”.Thetemperatureisshownatthecenterofthedisplay.RefertoFigs.5‐1(b)belowfor
illustrativeexamplesofDistancetoSpotratio.
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Fig5‐1(a)TG54DistancetoSpotratio24:1