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Material
Asbestos
Asphalt
Basalt
Carbon
Unoxidized
Graphite
Carborundum
Ceramic
Clay
Concrete
Cloth
Glass
Plate
"Gob"
Gravel
Gypsum
Ice
Limestone
Paint (non-al.)
Paper (any color)
Plastic,
greater
500 µm (0.02 in) thickness
Rubber
Sand
Snow
Soil
Water
Wood, Natural
MI3
3.9 µm
than
Tab. 20: Typical Emissivity Values for Non-Metals
Rev. G Nov/2015
N
-M
ON
ETALS
Emissivity
5 µm
0.9
0.95
0.7
0.8-0.9
0.7-0.9
0.9
0.8-0.95
0.85-0.95
0.9
0.95
0.98
0.9
0.95
0.4-0.97
—
0.4-0.98
—
0.95
0.95
0.9
0.9
—
—
—
0.9-0.95
Appendix
8 – 14 µm
0.95
0.95
0.7
0.8-0.9
0.7-0.8
0.9
0.95
0.95
0.95
0.95
0.85
—
0.95
0.8-0.95
0.98
0.98
0.9-0.95
0.95
0.95
0.95
0.9
0.9
0.9-0.98
0.93
0.9-0.95
131
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Questions and answers
I am currently installing 4 modules, each with 2 of the Raytek MI3 units. 7 of the units arrived with the normal display (Bottom Unit in photo), but 1 has only a full white block in the display. Is this indicative of a failed unit, or would this require external adjustments. These units always work when received, so I am unfamiliar with the required troubleshooting.