Fluke MP Series, Краткое руководство пользователя

Страница: 63 / 65

Appendix
Typical Emissivity Values
63
9
Table 9-1: Typical Emissivity Values for Metals
Metals
Emissivity
Material 1 µm 1.6 µm 2.3 µm
Aluminum
Unoxidized 0.1-0.2 0.02-0.2 0.02-0.2
Oxidized 0.4 0.4 0.2-0.4
Alloy A3003,
Oxidized
0.4
0.4
Roughened 0.2-0.8 0.2-0.6 0.2-0.6
Polished 0.1-0.2 0.02-0.1 0.02-0.1
Brass
Polished 0.1-0.3 0.01-0.05 0.01-0.05
Burnished 0.4
Oxidized 0.6 0.6 0.6
Chromium 0.4 0.4 0.05-0.3
Oxidized
Copper
Polished 0.03 0.03
Roughened 0.05-0.2 0.05-0.2
Oxidized 0.2-0.8 0.2-0.9 0.7-0.9
Gold 0.3 0.01-0.1 0.01-0.1
Haynes
Alloy 0.5-0.9 0.6-0.9 0.6-0.9
Inconel
Oxidized 0.4-0.9 0.6-0.9 0.6-0.9
Sandblasted 0.3-0.4 0.3-0.6 0.3-0.6
polished 0.2-0.5 0.25 0.25
Iron
Oxidized 0.4-0.8 0.5-0.8 0.7-0.9
Unoxidized 0.35 0.1-0.3 0.1-0.3
Rusted 0.6-0.9 0.6-0.9
Molten 0.35 0.4-0.6 0.4-0.6
Iron, Cast
Oxidized 0.7-0.9 0.7-0.9 0.7-0.9
Unoxidized 0.35 0.3 0.1-0.3
Molten 0.35 0.3-0.4 0.3-0.4
Iron, Wrought
Dull 0.9 0.9 0.95
Lead
Polished 0.35 0.05-0.2 0.05-0.2
Rough 0.65 0.6 0.5
Oxidized 0.3-0.7 0.3-0.7
Magnesium 0.3-0.8 0.05-0.3 0.05-0.2
Mercury 0.05-0.15 0.05-0.15
Molybdenum
Oxidized 0.5-0.9 0.4-0.9 0.4-0.9
Unoxidized 0.25-0.35 0.1-0.35 0.1-0.3