FLIR E53 User Manual page 312

37 The measurement formula
Figure 37.2 Relative magnitudes of radiation sources under varying measurement conditions (SW camera).
1: Object temperature; 2: Emittance; Obj: Object radiation; Refl: Reflected radiation; Atm: atmosphere radia-
tion. Fixed parameters: τ = 0.88; T
Figure 37.3 Relative magnitudes of radiation sources under varying measurement conditions (LW camera).
1: Object temperature; 2: Emittance; Obj: Object radiation; Refl: Reflected radiation; Atm: atmosphere radia-
tion. Fixed parameters: τ = 0.88; T
#T810190; r. AL/47698/47698; en-US
= 20°C (+68°F); T = 20°C (+68°F).
refl atm
= 20°C (+68°F); T = 20°C (+68°F).
refl atm
300