DeWalt DCT414 Guide D'utilisation page 10

SAVE THESE INSTRUCTIONS
FOR FUTURE USE
Laser Information
The Infrared Thermometer (IR thermometer) is a Class 2 laser product
and complies with 21 CFR 1040.10 and 1040.11 except for deviations
pursuant to laser notice No. 50, dated June 24, 2007.
Emissivity
Emissivity describes the energy-emitting characteristics of materials.
Most organic materials and painted or oxidized surfaces have
an emissivity of about 0.95 which is the default setting. It is
recommended to compensate for inaccurate readings that may result
from measuring materials with low emissivity values such as shiny
metal surfaces. Cover these surfaces with masking tape or flat black
paint (<148°C/300°F) and use the default (0.95) setting. Allow time
for the tape or paint to reach the same temperature as the surface
beneath it and then measure the temperature of the tape or painted
surface.
If you cannot paint or use tape, then you can compensate your
measurements with the emissivity selector. Even with the adjustable
emissivity, it can be difficult to get a completely accurate infrared
measurement of a target with a shiny or metallic surface. Experimentation
may be required to benchmark temperatures, and experience will help
you choose the best setting for specific measurements.
The thermometer has emissivity adjustable from 0.1 to 1.0 in increments
of 0.01. Refer to the Nominal Emissivity Table in this manual. The
reference to emissivity settings in the table are suggestions for typical
situations and your particular situation may differ.
NOTE: Calibration of this product was performed at 0.95 emissivity.
FIG. 2
LOCATED ON
SIDE OF TOOL
E
F
B
C
8
A
D
O
C
P