Emissivity; Degree Of Emission Table - Testboy TV 292 Manual De Instrucciones

Emissivity

Using , call up the main menu and, using
degree of emission, press
Using , you can exit the selection.
Notes
Infra-red energy is radiated from all objects. How much energy is radiated depends on the actual surface
temperature and the degree of emission at the surface. The measuring instrument records the infra-red energy
radiated from the surface and, based on this data, calculates an approximate temperature value. Many objects and
materials frequently occurring, for example, painted metal, wood, water, skin and fabric, radiates energy very good
and readily enables very good measurements. For surfaces that feature good radiation characteristics (a high
degree of emission), the degree of emission is ≥ 90 % (0.90). Shiny surfaces or unpainted metals only have
a degree of emission of < 60 % (0.60). These materials do not have good radiation characteristics and, thus,
only a low emissivity. In order to be able to more accurately measure materials with low emissivity, the degree of
emissions must be accordingly corrected. By adapting the degree of emission, the actual temperature can normally
be calculated more accurately.

Degree of Emission Table

Material
Aluminium
Asphalt
Concrete
Leather
Ceramic
Copper
Tile
Carbon
Sealing agent,
containing grease
Frozen foods
Warm food
Ice
Snow
Human skin
®
Testboy TV 292
and then, using
Degree of heat emission
0.30
0.90 to 0.98
0.95
0.95
0.90 to 0.95
0.50
0.90
0.85
0.94
0.90
0.93
0.96 to 0.98
0.83
0.98
, select the degree of emission module. In order to set the
select the value required.
,
Material
Glass
Iron oxide
Paint
Synthetic material
Paper
Sand
Rubber
Wood
Textiles
Lead
Marble
Fabric (black)
Mortar
Water
Operation
Degree of heat emission
0.90 to 0.95
0.78 to 0.82
0.80 to 0.95
0.85 to 0.95
0.70 to 0.94
0.90
0.95
0.94
0.94
0.50
0.94
0.98
0.8 to 0.90
0.92 to 0.96
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