ThermoSpot-Vision
19
GB
17
Emissivity coef
Ƃ
cient / infrared measurement
A built-in sensor head detects the material/surface-speci
Ö
c infrared radiation emitted by all objects. The level
of these emissions is determined by the material's emissivity coef
Ö
cient (0.10 to 1.0). The emissivity coef
Ö
cient
must
Ö
rst be set in order to correctly measure the surface temperature. In addition to the de
Ö
ned emissivity
coef
Ö
cient, it is also possible to set an individual emissivity coef
Ö
cient (see Point 8).
Asbestos
Asphalt
Basalt
Coal
Non-oxidised
Graphite
Carborundum
Ceramics
Earthenware, matt
Clay
Concrete, plaster, mortar
Masonry
Brick, red
Lime malm brick
Fabric
Glass
Gravel
Gypsum
0,93
0,95
0,70
0,8 - 0,9
0,7 - 0,8
0,90
0,95
0,93
0,95
0,93 - 0,94
0,93
0,93
0,95
0,95
0,85 - 0,94
0,95
0,8 - 0,95
Ice
Clear
With heavy frost
Limestone
Paper
All colours
Wallpaper, light-coloured
Plastic
Translucent
PE, P, PVC
Soil
Water
Wood
Untreated
Beech, planed
China
Brilliant white
With glaze
Paint
Black, matt
Heat-resistant
White
0,93 - 0,98
0,97
0,98
0,98
0,95 - 0,97
0,88 - 0,90
0,80 - 0,95
0,95
0,94
0,9 - 0,98
0,93
0,8 - 0,95
0,94
0,7 - 0,75
0,92
0,96 - 0,98
0,92
0,85 - 0,95
Transformer paint
Rubber
Hard
Soft, grey
Cotton
Lime
Tar
Tar paper
Snow
Human skin
Quartz glass
Heat sink
Black, anodized
Marble
Black, dull finish
Greyish, polished
0,94
0,94 - 0,95
0,89
0,77
0,3 - 0,4
0,79 - 0,84
0,91 - 0,93
0,80
0,98
0,93
0,98
0,94
0,93
Nonmetals
Aluminium
Oxidised
Polished
Alloy A3003
Oxidised
Roughened
Brass
Polished
Oxidised
Copper
Oxidised
Elect. terminal strips
Haynes
Metal alloy
Inconel
Oxidised
Sandblasted
Electropolished
0,2 - 0,4
0,04 - 0,06
0,3
0,1 - 0,3
0,3
0,5
0,4 - 0,8
0,6
0,3 - 0,8
0,7 - 0,95
0,3 - 0,6
0,15
Iron
Oxidised
With rust
With red rust
Iron, cast
Oxidised
Non-oxidised
Molten mass
Iron, forged
Matt
Lead
Rough
Oxidised
Molybdenum
Oxidised
Nickel
Oxidised
Platinum
Black
0,5 - 0,9
0,5 - 0,7
0,61 - 0,85
0,6 - 0,95
0,2
0,2 - 0,3
0,9
0,4
0,2 - 0,6
0,2 - 0,6
0,2 - 0,6
0,9
Steel
Cold rolled
Ground plate
Polished plate
Alloy (8% nickel,
18% chromium)
Galvanised
Oxidised
Heavily oxidised
Freshly rolled
Rough, flat surface
Rusty, red
Sheet, nickel plated
Sheet, rolled
Zinc
Oxidised
0,7 - 0,9
0,4 - 0,6
0,1
0.35
0.28
0.80
0.88
0.24
0.95 - 0.98
0.69
0.11
0.56
0,1
Metals
The table lists several material-speci
Ö
c emissivity coef
Ö
cients that should be considered as reference
values. The shape and structure of the surface can in
×
uence the emissivity coef
Ö
cient.
!
Unknown emissivity coef
Ƃ
cient
Apply masking tape or matt black paint to the surface of the area to be measured. Wait until the
tape/paint has assumed the surface temperature. The temperature of the surface can then be measured
with an emissivity coef
Ö
cient of 0.95.
Summary of Contents for ThermoSpot-Vision
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