Maintenance And Troubleshooting Tips - General IRT657 Manual Del Usuario

MAINTENANCE AND
TROUBLESHOOTING TIPS
After subjecting the thermometer to a sudden change in ambient
temperature, you must wait 30 minutes before measurements are
within specifications.
The infrared lens on the front of the unit is the IRT657's most
sensitive component. To clean the lens, first use compressed air to
blow off loose particles and then brush any remaining debris
away with a camel's hair brush. If necessary, carefully wipe the
lens with a cotton swab moistened with water. NEVER use a
solvent, such as alcohol, to clean the lens.
To clean the thermometer's housing, use soap and water and a
sponge or soft cloth.
When the
display, it's time to change the thermometer's 9V battery. To do so,
refer to the Setup Instructions on p. 7.
If the text "OH—" or "OL" appears on the display, the target's
temperature is outside the measurement range of the IRT657.
If a temperature reading is far different than the known
temperature of a target, the likely reason is either:
• The thermometer is at the wrong distance from the target
(see "HOW TO MAKE ACCURATE IR MEASUREMENTS" on p. 9).
• The target's emissivity is well below the IRT657's fixed setting
of 0.95.
icon appears in the upper left corner of the
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