Textron Greenlee TG-2000, Instruction Manual

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14
Emissivity
(cont’d)
Common Emissivities
Material Emissivity
Aluminum 0.30
Asbestos 0.95
Asphalt 0.95
Basalt 0.70
Brass* 0.50
Brick 0.90
Carbon 0.85
Ceramic 0.95
Concrete 0.95
Copper* 0.95
Dirt 0.94
Food (frozen) 0.90
Food (hot) 0.93
Glass (plate) 0.85
Ice 0.98
* oxidized
** opaque, over 0.51 mm (0.0020") thick
*** natural
Material Emissivity
Iron* 0.70
Lead* 0.50
Limestone 0.98
Oil 0.94
Paint 0.93
Paper 0.95
Plastic** 0.95
Rubber 0.95
Sand 0.90
Snow 0.90
Steel* 0.80
Textiles 0.94
Water 0.93
Wood*** 0.94
Accuracy
Accuracy Table for Infrared Sensor
Target Temperature Ambient Temperature Accuracy
15 °C to 35 °C 25 °C ± 1.0 °C
-60 °C to 0 °C
20 °C to 26 °C
± (2.0–0.05 x reading) °C
0 °C to 625 °C
± 2.0% of reading or 2 °C,
whichever is greater
59 °F to 95 °F 77 °F ± 1.8 °F
-76 °F to 32 °F
73 °F to 79 °F
± (5.2–0.05 x reading) °F
32 °F to 1157 °F
± 2.0% of reading or 4 °F,
whichever is greater