Measurement range Accuracy Reproducibility
<0 °C
± (2 °C + 0.2 °C per
degree)
±0.8%or±1°C(whichever
is greater)
≥0°C
±1.5 °C or ±1.5%
(whichever is greater)
The emission levels of different surfaces
Surface Emission level Surface Emission level
Asphalt 0.90 – 0.98 Varnish (matt) 0.97
Concrete 0.94 Marble 0.94
Chromium oxide 0.81 Human skin 0.98
Ice 0.96 – 0.98 Mortar 0.89 – 0.91
Ferric oxide 0.78 – 0.82 Paper 0.70 – 0.94
Earth 0.92 – 0.96 Plastic 0.85 – 0.95
Hard plaster 0.80 – 0.90 Sand 0.90
Glass 0.90 – 0.95 Foam 0.75 – 0.80
Rubber (black) 0.94 Fabric (black) 0.98
Ceramic 0.90 – 0.94 Textiles 0.90
Carbon (powder) 0.96 Water 0.92 – 0.96
Copper oxide 0.78 Cement 0.96
Varnish 0.80 – 0.95 Brick 0.93 – 0.96
The emission ratios in the above table are approximate values. Parameters such as
the shape and characteristics of the material can affect the emissivity of an object.
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