RECORDABLE THERMAL IMAGER 057-4582-6
10
EMISSIVITY CHART
EMISSIVITY
• Emissivity describes the energy-emitting characteristics of materials.
• A built-in IR sensor head detects the material/surface-specific infrared rays emitted by every object.
The level of emissivity is determined by the material‘s emissivity value (0.01 to 0.99).
This device is preset to an emissivity value of 0.95, which is applicable to most organic materials as
well as plastics, ceramics, wood, rubber and stone. For details of those materials with a different
emissivity value please refer to the table.
UNKNOWN EMISSIVITY VALUE
Apply masking tape or black matt paint to the surface of the area whose temperature you wish to
measure.
Wait until the tape/paint has heated up. The temperature of the surface can then be measured with an
emissivity value of 0.95.
EMISSIVITY VALUE
See emissivity chart below for the proper settings for different materials.
Asbestos
Asphalt
Basalt
Coal
Non-oxidised
Graphite
Carborundum
Ceramics
Earthenware,
matt
Clay
Concrete,
plaster,
mortar
Masonry
Brick, red
Lime brick
Fabric
Glass
Gravel
Gypsum
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
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
0.93
0.95
0.70
0.8 - 0.9
0.7 - 0.8
0.90
0.95
0.93
0.95
0.93
0.93
0.93
0.95
0.95
0.85 - 0.94
0.95
0.8 - 0.95
0.97
0.98
0.98
0.95 - 0.97
0.88 - 0.90
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
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
NON-METALS
