28
Appendix
12. Appendix
12.1. Operating Instructions Change Index
Version
Date
Description/Change
1.0.0
21.05.2015
Layout revised
1.1.0
24.02.2016
Correction of the description of the SEr.O function (serial interface)
1.2.0
04.07.2019
Supplementing the Definition of Reproducibility (Chapter 3)
12.2. Emission Factor
The following table includes a selection of emission factors provided as examples within a spectral range of 8
to14 μm at a temperature of 70° C. To a great extent, the actual emission factor depends on the object’s surface
finish (especially in the case of metals).
Material
Specification
Emission Factor
Aluminum
Sheet
0.03…0.06
Aluminum
Anodized, light gray, dull
0.95…0.97
Aluminum
Cast, sandblasted
0.46
Bronze
Phosphor bronze
0.06
Stainless steel
Polished
0.07
Galvanized iron
Sheet, oxidized
0.85
Iron and steel
Cold rolled
0.09
Fiberboard
Chloritoid
0.88
Fiberboard
Particle board
0.89
Veneer
Oak parquet floor as well
0.90…0.93
Granite
Rough
0.77…0.87
Wood
Planed oak
0.88
Plastic
Fiberglass laminate (PCB)
0.91
Plastic
PVC, dull, textured
0.93
Paint
3 colors sprayed onto aluminum
0.92…0.94
Paint
8 different colors and qualities
0.92…0.94
Brass
Oxidized
0.03…0.07
Paper
4 different colors
0.92…0.94
Paper
White, various degrees of gloss
0.88…0.90
Stainless steel
Sheet, untreated
0.28
Determining the Emission Factor
If the material of the object to be measured is known, the values in the table can be used as approximations.
Most organic materials such as plastics, textiles and wood have an emission factor of approximately 0.95. In
the case of objects made of unknown materials or where highly precise measurements are required, one of the
following methods can be used in order to accurately determine the emission factor.
