VOLTCRAFT IR 900-30S Provozní pokyny stáhnout pdf (Strana 27)

Emissivity of different surfaces

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The values stated in the table are approximate values. Different parameters like surface

geometry or quality can influence the emissivity of an object.

Surface Emissivity Surface Emissivity

asphalt 0,90 – 0,98 paints (matt) 0,97

concrete 0,94 human skin 0,98

ice 0,96 – 0.98 mortar 0,89 – 0,91

iron oxide 0,78 – 0,82 paper 0,70 – 0,94

soil, humus 0.92 – 0,96 plastic 0,85 – 0,95

gypsum 0,80 – 0,90 sand 0,90

glass/ceramic 0,90 – 0,95 textiles 0,90

rubber (black) 0,94 water 0,92 – 0,96

paints 0,80 – 0,95 bricks 0,93 – 0,96

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 53 54

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VOLTCRAFT IR 900-30S Provozní pokyny Strana 27