Instruction
Manual
50700006
11
8 Emissivity
Emissivity refers to the ability of an object to emit infrared ray. The greater the emissivity
is, the stronger the emission ability of the surface of an object is. The emissivity of most
organic substances or oxidized surfaces of metals falls within the range of 0.85~0.98. The
default emissivity of this measurement device is 0.95. The instrument’s emissivity is set to
be consistent with that of the object to be measured at the moment of measurement. The
effect of emissivity on measurement result must be noticed at the time of measurement.
The diagram provided below is a reference table for emissivity.
Surface measured
Emissivity
Aluminum Metal
Oxidized
0.2~0.4
A3003AlloyOxidized
0.3
A3033AlloyRough
0.1~0.3
Brass
Polished
0.3
Oxidized
0.5
Copper
Oxidized
0.4~0.8
Electronic terminal board
0.6
Hastelloy
0.3~0.8
Chromium-
Nickel-Iron Alloy
Oxidized
0.7~0.95
Sandblast
0.3~0.6
Electro-Polished
0.15
Iron
Oxidized
0.5~0.9
Rusted
0.5~0.7
Iron (Cast)
Oxidized
0.6~0.95
No Oxidized
0.2
Melt & cast
0.2~0.3
Iron(Forged) Passivated
0.9
Lead
Rough
0.4
Oxidized
02~0.6
