13�1 Emissivity Coefficient Tables - IFM Electronic EFECTOR 600 TW2000 Operating Instructions Manual

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�
13.1 Emissivity coefficient tables
List of emissivity coefficients of different materials in %�
Model
Wavelength λ
"Black body"
Aluminium oxide
Asphalt
Baking oven, dark colour
Concrete
Bitumem (roofing paper)
Bread in baking oven
Ferrous oxide
Enamel
Earth
Paint and varnish, bright
Paint and varnish, pale
Gypsum
Glass
Graphite
Rubber, black
Skin, human
Wood
Radiator
Lime cast
Clinker bricks, glazed
Cooking plate
Synthetic material, nontransparent
TW2000
8...14 μm
100
76
90���98
96
55���65
96
88
85���89
84���88
92���96
92
94
80���90
85���95
98
94
98
80���90
80���85
91
75
95
65���95
UK
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