Wabtec Mors Smitt EazyIR Manual Del Usuario página 25

Emissivity (EMS)
The emissivity of the surface of a material is its effectiveness in emitting
energy as thermal radiation. Quantitatively, emissivity is the ratio of the
thermal radiation from a surface to the radiation from an ideal black
surface at the same temperature as given by the Stefan–Boltzmann law.
Refer to the Table 2 for the Emissivity adjustment. Nominal Surface
Emissivity for an accurate non-contact infrared temperature measure-
ment.
Table 2: Nominal surface emissivity
Material
Default****
Aluminium*
Asbestos
Aspfalt
Brass*
Ceramic
Concrete
Copper*
Food - frozen
Food - hot
Glass (plate)
* Oxidized
** Opaque, over 20 mils
*** Natural
****Factory Setting
Value Material
0.95 Iron
0.30 Led*
0.95 Oil
0.95 Paint
0.50 Plastic **
0.95 Rubber
0.95 Sand
0.60 Steel*
0.90 Water
0.93 Wood ***
0.85
Value
0.70
0.50
0.94
0.93
0.95
0.95
0.90
0.80
0.93
0.94
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