63/66/68
Infrared Thermometers
14
reach the same temperature as the surface beneath it. Measure
the temperature of the tape or painted surface.
The 66/68 thermometers allow you to adjust the unit’s emissivity for
the type of surface being measured. Refer to Table 2.
Table 2. Surface Emissivity
Measured Surface
Emissivity
Measured Surface Emissivity
METALS
Iron
Aluminum
Oxidized 0.5-0.9
Oxidized 0.2-0.4
Rusted 0.5-0.7
Alloy A3003
Iron, Cast
Oxidized
0.3
Oxidized 0.6-0.95
Roughened 0.1-0.3
Unoxidized
0.2
Brass
Molten 0.2-0.3
Burnished 0.3
Iron, Wrought
Oxidized 0.5
Dull 0.9
Copper
Lead
Oxidized 0.4-0.8
Rough 0.4
Electrical Terminal
Blocks
0.6
Oxidized 0.2-0.6
Haynes
Molybdenum
Alloy 0.3-0.8
Oxidized
0.2-0.6
Inconel
Nickel
Oxidized 0.7-0.95
Oxidized
0.2-0.5
Sandblasted 0.3-0.6
Platinum
Electoropolished 0.15
Black
0.9
