VOLTCRAFT IR 1201-50D Bedienungsanleitung Seite 50

K-type contact temperature measurement
Measurement range °C
-50 to 0 °C
0 to +1370 °C
Measurement range °F
-58 to +32 °F
+32 to +2498 °F
Emissivity of different surfaces
The emission levels listed in the table are approximate values. Parameters such as the shape and characteristics of
the material can affect the emissivity of an object.
The measuring device is preset with an emission level of 0.95. This level matches most non-metallic materials. The
IR measuring method is suitable for bare metals only to a limited extent and requires special surface treatment (e.g.
matt insulation tape etc.) or setting the appropriate emission level.
Surface
Aluminium, bare
Aluminium oxide
Asphalt
Concrete
Ice
Ferric oxide
Paint
Hard plaster
Glass/porcelain
Rubber, black
Wood
50
Accuracy
± 2 °C
±(0.5 % + 1.5 °C)
Accuracy
± 3.6 °F
±(0.5 % + 3 °F)
Emission level
0.04
0.30
0.90 - 0.98
0.94
0.96 - 0.98
0.78 - 0.82
0.93
0.80 - 0.90
0.92 - 0.94
0.94
0.94
Surface
Copper oxide
Brass oxide
Varnish, matt
Food
Human skin
Plastic
Paper
Sand
Textiles
Water
Bricks, plastering
Emission level
0.60
0.50
0.93 - 0.97
0.93 - 0.98
0.98
0.94
0.97
0.90
0.90
0.92 - 0.96
0.93 - 0.96