LIMIT 272840208, Руководство по эксплуатации

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13. Visual field
Ensure that the target is larger than the diameter of the two laser spots. The smaller the target is, the closer
should the measurement distance be. Suggested measurement distance should be so the diameter of the two
laser spots cover less than 75% of the testing area (shown below).
14. Emissivity
Emissivity characterization reflects the of material’s radiated energy. Emissivity for most organic materials,
paints or oxidized surfaces are about 0.95. Total emissivity of selected metals and non-metals are listed in the
following table.
Measured surfaces Emissivity
Metal
Aluminum Oxidization 0.2-0.4
A3003 Alloy
Oxidization 0.3
Rough 0.1-0.3
Brass
Burnishing 0.3
Oxidization 0.5
Copper
Oxidization 0.4-0.8
Electric terminal board 0.6
Hastelloy Alloy 0.3-0.8
Inconel
Oxidization 0.7-0.95
Sand-blasting 0.3-0.6
Electro burnishing 0.15
Iron
Oxidization 0.5-0.9
Rusting 0.5-0.7
Iron (casting)
Oxidization 0.6-0.95
Non-oxidization 0.2
Casting 0.2-0.3
Iron (forging) Passivation 0.9
Lead
Rough 0.4
Oxidization 0.2-0.6
Molybdenum Oxidization 0.2-0.6
Nickel Oxidization 0.2-0.5
Platinum Black 0.9
Steel
Cold rolling 0.7-0.9
Steel plate burnishing 0.4-0.6
Steel plate rubbing 0.1
Zinc Oxidization 0.1
Measured surfaces Emissivity
Non-metal
Asbestos 0.95
Asphalt 0.95
Basalt 0.7
Carbon
Non-oxidization 0.8-0.9
Graphite 0.7-0.8
Silicon carbide 0.9
Ceramics 0.95
Clay 0.95
Concrete 0.95
Cloth 0.9
Glass
Convex glass 0.76-0.8
Smooth glass 0.92-0.94
Lead-boron glass 0.78-0.82
Plates 0.96
Stone products 0.93
Plaster 0.8-0.95
Ice 0.98
Limestone 0.98
Paper 0.95
Plastics 0.95
Water 0.93
Soil 0.9-0.98
Wood 0.9-0.95
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