TESTO 810 - Emission Factors of Materials

Product description 17
Because of their low or non-uniform emission factor, bright
metals and metal oxides are of only limited use for infrared
measurement. Coatings that increase the emission factor,
e.g. paint or emission adhesive (0554 0051) must be
applied to the object being measured.
Emission factors of various materials (typical values):
Material (temperature)
ε
Aluminium, bright rolled (170 °C) 0.04
Cotton (20 °C) 0.77
Concrete (25 °C) 0.93
Ice, smooth (0 °C) 0.97
Iron, emery ground (20 °C) 0.24
Iron with casting skin (100 °C) 0.80
Iron with rolling skin (20 °C) 0.77
Gypsum (20 °C) 0.90
Glass (90 °C) 0.94
Rubber, hard (23 °C) 0.94
Rubber, soft grey (23 °C) 0.89
Wood (70 °C) 0.94
Cork (20 °C) 0.70
Radiator, black anodised (50 °C) 0.98
Copper, slightly tarnished (20 °C) 0.04
Copper, oxidised (130 °C) 0.76
Plastics: PE, PP, PVC (20 °C) 0.94
Brass, oxidised (200 °C) 0.61
Paper (20 °C) 0.97
Porcelain (20 °C) 0.92
Black paint, matt (80 °C) 0.97
Steel, heat-treated surface (200 °C) 0.52
Steel, oxidised (200 °C) 0.79
Clay, burnt (70 °C) 0.91
Transformer paint (70 °C) 0.94
Brick, mortar, plaster (20 °C) 0.93
1 When switching the instrument on, press and hold until
and appear on the display (configuration mode).
- The adjustable function is displayed. The current setting
flashes.
2 Press ( ) several times until the desired setting flashes.
3 Press ( ) to confirm the input.
4 Repeat steps 2 and 3 for all functions.
- The instrument changes to measuring mode.
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