T-CAM 80 P-SERIES/T-CAM 160 XT USER MANUAL
19
The following table gives typical emissivity of important materials:
Material
Emissivity
Water
0.36
Stainless steel
0.14
Aluminum plate
0.09
Asphalt
0.96
Concrete
0.97
Cast iron
0.81
Rubber
0.95
Wood
0.85
Brick
0.75
Tape
0.96
Brass plate
0.06
Human skin
0.98
PVC plastic
0.93
Polycarbonate
0.80
Oxidized copper
0.78
Rust
0.80
Paint
0.90
Soil
0.93
9-11 Reflected Temperature
Using the offset factor, the reflection is calculated out due to the low emissivity, improving
temperature measurements. In most cases, the reflected temperature is identical to the
ambient air temperature. The reflected temperature has little effect on objects with high
emissivity. The reflected temperature can be set individually.
Follow these steps to get the right value for the reflected temperature.
1.
Set the emissivity to 1.0.
2. Adjust the optical lens to near focus.
3. Looking away from the object, take a measurement and freeze image.
4. Determine the average value of the image and use value as the reflected temperature.
