Section 6 — APPLICATIONS GUIDE
6–20
TABLE 6.11
GUIDE TO EMISSIVITY VALUES FOR TARGET MATERIALS IN IDEALIZED FORM
ARRANGED BY CLASSES OF MATERIALS
INSTRUMENT SERIES:
MODLINE 4, Series 43
SPECTRUM: 3.36 to 3.50 microns
All specimens in this table are in the following form:
1. Thick enough to reduce Transmittance
τ
to less than 0.01.
2. Viewed surface clean, flat, and optically smooth.
TARGET MATERIAL
MINIMUM THICKNESS
REFLECTANCE
EMISSIVITY
(inches)
r
ε
PLASTICS
ABS, “CYCOLAC”
0.015
0.03
0.97
ACETAL, “DELRIN”
0.008
0.03
0.97
ACRYLIC, “PLEXIGLAS”, “LUCITE”
0.008
0.03
0.97
CELLULOSICS
0.003
0.03
0.97
CELLOPHANE
0.003
0.03
0.97
EPOXY
0.002
0.03
0.97
POLYAMIDE, “NYLON”
0.005
0.03
0.97
POLYCARBONATE, “LEXAN”
0.015
0.03
0.97
POLYESTER, PET, “MYLAR”, “DACRON”
0.020
0.03
0.97
POLYETHYLENE
0.005
0.03
0.97
POLYPROPYLENE
0.005
0.03
0.97
POLYSTYRENE
0.010
0.03
0.97
POLYVINYL CHLORIDE (PVC), “GEON”
0.010
0.03
0.97
LIQUIDS
WATER
0.003
0.02
0.98
OIL, MINERAL
0.003
0.03
0.97
OIL, ANIMAL OR VEGETABLE
0.003
0.03
0.97
GLASSES
SODA-LIME (WINDOWS, BOTTLES)
0.30
0.03
0.97
CHEMICAL “PYREX”
0.12
0.03
0.97
Summary of Contents for Modline 4
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