19
Troubleshooting
Cause Corrective Measure
Temperature warning indicator (a) flashing;
measurement not possible
Measuring tool not within the
temperature range between
+14°F and 113°F ( –10°C
and +45°C)
Wait until the measuring tool
has reached the operating
temperature
Battery low indicator (b) appears
Battery voltage decreasing
(measurement still possible)
Replace batteries
Battery low indicator (b) flashing; measurement not
possible
Battery voltage too low Replace batteries
All indicators on the display flashing
The measuring tool is
defective
Contact the Customer
Service
Accuracy Check of the Distance Measurement
The accuracy of the distance measurement can be checked
as follows:
– Select a permanent measuring section with a length
of approx. 3 ft to 33 ft (1 m to 10 m); its length must
be precisely known (e.g. the width of a room or a door
opening). The measuring distance must be indoors; the
target surface for the measurement must be smooth and
reflect well.
– Measure the distance 10 times after another.
The deviation of the individual measurements from the
mean value must not exceed ±1/16” (±1.5mm). Log the
measurements, so that you can compare their accuracy at a
later point of time.
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