DeWalt DCT416 Instruction Manual page 15

NOMINAL EMISSIVITY VALUE
MATERIAL VALUE MATERIAL
Carbon-filled surface 0.98
Frost crystals 0.98
Human skin 0.98
Slate 0.97
Water, distilled 0.96
Ice, smooth 0.96
Soil, saturated with water 0.95
Carbon candle soot 0.95
Glass, polished plate 0.94
Paint, oil 0.94
Brick, red 0.93
Paper, white bond 0.93
Concrete 0.92
Soil, dry 0.92
Plaster, rough coat 0.91
Wood, planed oak 0.90
Earthenware, glazed 0.90
Snow, granular 0.89
Silica, glazed 0.88
Cuprous Oxide at 38 ˚C 0.87
Emery Corundum 0.86
Snow 0.85
Stainless, oxidized at 0.85
800 ˚C
Iron, oxidized at 500 ˚C 0.84
Cuprous Oxide at 260 ˚C 0.83
Snow, fine particles 0.82
Brass, unoxidized 0.81
Glass, convex D 0.80
Steel, oxidized 0.79
VALUE
Copper, heavily oxidized 0.78
Cloth, cotton 0.77
Sand 0.76
Silica, unglazed 0.75
Iron, oxidized at 100 ˚C 0.74
Coating No. C20A 0.73
Basalt 0.72
Carbon, graphitized at 0.71
500 ˚C
Red Rust 0.70
Iron sheet, heavily rusted 0.69
Water 0.67
Black loam 0.66
Cement, white 0.65
Iron cast, oxidized 0.64
Lead, oxidized at 1100 ˚C 0.63
Zirconia on inconel 0.62
Cu-Zn, brass oxidized 0.61
Inconel sheet at 760 ˚C 0.58
Marble, smooth white 0.56
All anodized chromic acid 0.55
Iron cast, polished 0.21
Brass, rubbed 80 grit emery 0.20
Stainless steel, 18-8 buffed 0.16
Aluminium as received 0.09
Steel, polished 0.07
Aluminium, polished sheet 0.05
Copper, polished 0.05
Brass, highly polished 0.03
To Change Emissivity
1. Press the menu/power button (L).
2. Press the forward (J) or back (H) arrow to highlight the emissivity
option in the menu.
3. Press the select button (I) to confirm selection.
4. Press the forward (J) or back (H) arrow to adjust the emissivity
setting. The emissivity can be adjusted in increments of 0.01 from
0.10 to 1.00.
5. Press the select button (I) to confirm the emissivity setting.
6. After saving the emissivity setting, the imaging thermometer will
automatically return to the main menu screen.
Background Temperature
For more accurate temperature measurements, it is recommended
to set the background (or reflected temperature). This is especially
important when the object being measured is at a significantly different
temperature than ambient or if the object being measured has a low
emissivity.
Setting the background temperature will help compensate for the
radiation from the surroundings.
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