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
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