Hioki HiTESTER 3415-02, Инструкция по эксплуатации

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Chapter 2 Making Measurements
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Substance Thermal
emissivity
Substance Thermal
emissivity
Asphalt 0.90 to 0.98 Cloth (black) 0.98
Concrete 0.94 Human skin 0.98
Cement 0.96 Leather 0.75 to 0.80
Sand 0.90 Charcoal
(powder)
0.96
Earth 0.92 to 0.96 Lacquer 0.80 to 0.95
Water 0.92 to 0.96 Lacquer
(matt)
0.97
Ice 0.96 to 0.98 Rubber
(black)
0.94
Snow 0.83 Plastic 0.85 to 0.95
Glass 0.90 to 0.95 Timber 0.90
Ceramic 0.90 to 0.94 Paper 0.70 to 0.94
Marble 0.94 Chromium
oxides
0.81
Plaster 0.80 to 0.90 Copper
oxides
0.78
Mortar 0.89 to 0.91 Iron oxides 0.78 to 0.82
Brick (red) 0.93 to 0.96 Textiles 0.90
NOTE
･
Variations in the surface condition and color
of the object whose temperature is to be
measured may cause the thermal emissivity
ε
to be somewhat different from the values
in the above table. If an accurate