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Substance
Asphalt
Concrete
Cement
Sand
Earth
Water
Ice
Snow
Glass
Ceramic
Marble
Plaster
Mortar
Brick
High & Low Records
While measuring the temperature of a surface, minimum and maximum values
are recorded. Press and release the "MODE" button after releasing the trigger
to cycle through the high and low records. Records are reset each time the
thermometer powers off, 5 seconds after no buttons are pressed.
Troubleshooting
Problem
Display screen
not working
Inaccurate
temperature
If your AcuRite product does not operate properly after trying
the troubleshooting steps, visit www.AcuRite.com or call
(877) 221-1252 for assistance.
Thermal emissivity
0.90 to 0.98
0.94
0.96
0.90
0.92 to 0.96
0.92 to 0.96
0.96 to 0.98
0.83
0.90 to 0.95
0.90 to 0.94
0.94
0.80 to 0.90
0.89 to 0.91
0.93 to 0.96
• Check that the battery is installed correctly. Battery
may need to be replaced.
• Verify size of target is within the field of measurement
according to the D:S ratio (see page 3).
• Estimate emissivity value of target surface (see chart
above). If you need to measure the temperature of a
shiny surface, cover the area with a piece of masking
tape. Then, measure the temperature of the taped
surface.
Substance
Cloth (black)
Human skin
Lather
Charcoal (powder)
Lacquer
Lacquer (matt)
Rubber (black)
Plastic
Timber
Paper
Chromium oxides
Copper oxides
Iron oxides
Textiles
Possible Solution
4
Thermal emissivity
0.98
0.98
0.75 to 0.80
0.96
0.80 to .095
0.97
0.94
0.85 to 0.95
0.90
0.70 to 0.94
0.81
0.78
0.78 to 0.82
0.90
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