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Stanley FMHT0-77422 Manual

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Emissivity Values
Substance Emissivity Substance Emissivity
Asphalt 0.90 - 0.98 Brick 0.93 - 0.96
Concrete
0.94
Cloth
(black)
0.98
Cement 0.96 Human skin 0.98
Sand 0.90 Lather 0.75 - 0.80
Earth
0.92 - 0.96
Charcoal
(powder)
0.96
Water 0.92 - 0.96 Lacquer 0.80 - 0.95
Ice
0.96 - 0.98
Lacquer
(matt)
0.97
Snow
0.83
Rubber
(black)
0.94
Glass 0.90 - 0.95 Plastic 0.85 - 0.95
Ceramic 0.90 - 0.94 Timber 0.90
Marble 0.94 Paper 0.70 - 0.94
Plaster 0.80 - 0.90 Textiles 0.90
Mortar
0.89 - 0.91
You can adjust the thermometer’s emissivity setting value so it
can match the type of surface to be measured.
How to Set Emissivity
1. When the thermometer is on, press and hold down the
MODE button until the symbol ashes, then release
the button.
2. Press the
button to decrease or the button to
increase the emissivity setting value.
3. When you nish emissivity setting, press and hold down
the MODE button until the symbol
stops ashing.
The thermometer returns to normal operation.
Basic Measurement
Procedure
1. Hold the thermometer by its handle, and point it toward the
surface to be measured.
2. Pull and hold the trigger for at least 1 sec to turn on the
thermometer and take measurement. Reading will be
displayed on the main display.
NOTE: Each time the trigger is pulled, the pull must
last at least 1 sec. The laser pointer (26, Figure F) is for
reference only.
3. During measurement, the symbol SCAN will ash on
the main display, and when the trigger is released, the
measurement stops and the symbol HOLD appears
indicating that the last reading is locked.
4. The thermometer will turn off automatically after about
50 seconds if the trigger or no buttons are pressed.
NOTE:
1. Make sure the target surface is larger than the
thermometer’s spot size. The smaller the target surface,
the closer you should be to it (Refer to Field Of View
section). When accuracy is critical, make sure the target
is at least twice as large as the spot size.
2. To nd a hot or cold spot, aim the thermometer outside the
desired area (25). Press and hold the trigger, slowly scan
back and forth across the area until you locate the hot or
cold spot. Refer to Figure C.
Measurement Considerations
• Laser beam is mainly used to locate far objects. To save
battery power, disable the laser function when measuring
near objects.
• The thermometer can not measure through transparent
surfaces such as glass. It will measure the surface
temperature of the glass instead.
• Steam, dust, smoke, etc., can prevent accurate
measurement by interfering with the energy emitted from
the target.
… 8 …


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