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Operating instructions
Using a reference emissivity coefficient
Apply matte black colour to a part of the surface to be measured. This part has an
emissivity of 94 %. At first, measure the temperature of the coloured part. Then
make a comparative measurement right next to the coloured part and adjust the
emissivity on the pyrometer until it displays the previous measurement reading
again.
17.1 Emissivity Table (One-colour mode)
Overview of the emissivities of different materials in %.
Model
7MC3052-...
Wavelength λ
0.8 - 1.1 μm
Black Body
100
Aluminium, polished
15
Aluminium, blackened
25
Asbestos cement
70
Bronce, polished
3
Bronze, blackened
30
Chromium, polished
30
Iron, heavily scaled
95
Iron, rolling skin
90
Iron, liquid
30
Gold and silver
2
Graphite, blackened
90
Copper, oxidized
90
Brass, oxidized (tarnished)
70
Nickel
20
Porcelain, glazed
60
Porcelain, rough
85
Soot
95
Fireclay
50
Slag
85
Pottery, glazed
90
Bricks
90
Zinc
60