ZK-l 78K Professional Thermall lmager
User Manual
8. Maintenance
Use a wet cloth or a weak soap solution to clean the outer shell of the device.
Do not use abrasives, isopropyl alcohol or solvents to clean the outer shell,
lens or window.
9. Common Emissivity
Material
Emissivity
Material
Emissivity
Wood
0.85
Black paper
0.86
Water
0.96
Polycarbonate
0.8
Brick
0. 75
Concrete
0.97
Stainless steel
0. 14
Copper oxide
0. 78
Tape
0.96
Cast iron
0.81
Aluminum plate
0.09
Rust
0.8
Copper plate
0.06
Gypsum
0. 75
Black aluminum
0.95
Paint
0.9
Human skin
0.98
Rubber
0.95
Asphalt
0.96
Soil
0 93
PVC
0.93
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