43
Condensation on camera lens. Place camera in a dry area at
room temperature until condensation evaporates.
Non-uniformity appears in the image. Perform a
non-uniformity calibration
Temperature
measurement
is
inaccurate
Emissivity setting is incorrect. Check and amend the
emissivity setting.
Filter range is inappropriate. Select a filter range that is
suitable for the target temperature being measured.
The target is not in focus. Adjust focus.
Condensation on camera lens. Place camera in a dry area at
room temperature until condensation evaporates.
Non-uniformity is severe. Press non-uniformity calibration.
17.
Typical Emissivity Values
Aluminium
0.05
Tungsten
0.13
Oxidized
0.3
Zinc
0.05
Chromium
0.15
Oxidized
0.11
Cobalt
0.18
Refractories
Gold
0.02
Alumina
0.4
Iron & Steel
0.18
Red Brick
0.93
Oxidized
0.85
Alloys
Lead
0.16
Brass
0.1
Oxidized
0.63
Oxidized
0.61
Magnesium
0.12
Miscellaneous
Nickel
0.15
Asphalt
0.9
Platinum
0.1
Carbon
>0.90
Silver
0.03
Soot
0.95
Tin
0.09
Cement & Concrete
0.9
Titanium
0.3
Cloth
0.85
