Section 6 — APPLICATIONS GUIDE
6–14
TABLE 6.8
GUIDE TO EMISSIVITY VALUES FOR TARGET MATERIALS IN THEIR “USUAL” FORM
ARRANGED BY CLASSES OF MATERIAL
INSTRUMENT SERIES:
MODLINE 4, Series 47
SPECTRUM: 4.8 to 5.2 microns
Materials in this table are in their common physical form — e.g. raw materials like coal, gravel, sand, etc. in their
normal granular form; construction products like lumber, paneling, tiles, roofing, etc. in their normal delivered
forms.
Target materials with Emissivity values less than 1 will reflect and/or transmit to the extent of 1-e . Low values of e
(e.g., e<0.8) suggest precautions are in order to prevent background interference from other hot objects in the
area.
(Continued)
TARGET MATERIAL
EMISSIVITY
ε
TEXTILES, FABRICS
CARPET (COTTON, WOOL, SYNTHETIC)
0.88
FABRICS, CLOSE WEAVE (COTTON,
WOOL, SYNTHETIC)
.60 - .90
FUR
.93
LEATHER
.90
PLASTICS (See Table 6.7 on Plastics")
FOODS, FOOD PROCESSING
BAKERY GOODS
0.96
BATTERS
.96
CANDY AND CONFECTIONS
.96
DAIRY PRODUCTS
.96
FRUITS
.96
FLOUR
.94
GRAIN
.94
GRAVIES
.96
JELLIES, JAMS
.98
LIQUIDS
.98
MEATS
.98
OILS (See Table 6.7 on "Liquids")
SAUCES
.98
SUGAR
.96
VEGETABLES
.98
TARGET MATERIAL
EMISSIVITY
ε
WOOD PRODUCTS
PAPER, WOOD PULP (0.003" THICK)
~0.50
PAPER, BOND STATIONERY (0.003" THICK)
~.50*
PAPER, CLAY FILLED (0.012" THICK)
.75
CARDBOARD
.80
WOOD, SOFT OR HARD
.75
HARDBOARD
.75
BUILDING MATERIALS
ASPHALT, MACADAM
0.98
CLAY, DRY
.90
CLAY , WET
.98
CONCRETE, DRY
.93
CONCRETE, WET
.98
CORK
.98
FIBERGLASS BATTS
.98
FORMICA
.95
GLASS
.98
GRAVEL
.93
LINOLEUM
.96
PAINTED METAL
0.20 - 0.40
PAINTED WOOD, PLASTIC
.80
PLASTIC PANELS (See Table 6.7 on
"Plastics")
PLYWOOD
.75
ROCK, CRUSHED
.93
ROOFING, COMPOSITION
.95
RUBBER CLOTH
.96
SAND
.97
TILES, CERAMICS
.97
TILES, RUBBER, PLASTIC
.95
WOOD
.75
Summary of Contents for Modline 4
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