Keller ITS CellaPort PT 120, Operating Manual, Page: 43 / 72

Operating manual PT 11x, 12x,13x
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20.3 Emissivity Coefficient Table PT 120 - PT 130
List of emissivity coefficients of different materials in %
Type PT 120 PT 130/135
Wavelength

1,1...1,7

m 0,78...1,06

m
0,82…0,93

m
"Black Body" 100 100
Aluminium, polished 5 15
Aluminium, blackened 10 25
Asbestos cement 60 70
Bronce, polished 1 3
Bronze, blackened 15 30
Chromium, polished 15 30
Iron, heavily scaled 90 95
Iron, rolling skin 75 90
Iron, liquid 15 30
Gold and silver 1 2
Graphite, blackened 85 90
Copper, oxidized 70 90
Brass, oxidized (tarnished) 50 70
Nickel 8 20
Porcelain, glazed 50 60
Porcelain, rough 75 85
Soot 90 95
Fireclay 40 50
Slag 80 85
Pottery, glazed 85 90
Bricks 85 90
Zinc 40 60