Bosch GLM 40 User Manual

-17-
Troubleshooting –
Causes and Corrective Measures
The measuring tool is outside the
operating temperature range from
–14°F to +122°F (in the function
continuous measurement up to
+104°F).
Wait until the measuring tool has
reached the operating temperature.
CAUSE CORRECTIVE MEASURE
Temperature warning indicator (f) flashing; measurement not
possible
“ERROR” indication in the display
Addition/Subtraction of measured
values with different units of
measure.
Only add/subtract measured values
with the same units of measure.
The angle between the laser beam
and the target is too acute.
Increase the angle between the
laser beam and the target.
The target surface does not reflect
correctly (e.g. water, glass).
Cover off the target surface.
The target surface reflects
too intensely (e.g. a mirror) or
insufficiently (e.g. black fabric), or
the ambient light is too bright.
Work with the laser target plate 18
(accessory).
The laser beam outlet 11 or the
reception lens 12 are misted up
(e.g. due to a rapid temperature change).
Wipe the laser beam outlet 11 and/
or the reception lens 12 dry using a
soft cloth.
Calculated value is greater than
999999 m/m
2
/m
3
.
Divide calculation into intermediate
steps.
Unreliable measuring result
The laser beam outlet 11 or the
reception lens 12 are covered.
Make sure that the laser beam
outlet 11 or the reception lens 12
are unobstructed

Bosch GLM 40 Specifications

General

Accuracy	± 1.5 mm
Laser Class	2
Laser Diode	635 nm, < 1 mW
Power Supply	2 x 1.5 V LR03 (AAA)
Dimensions	105 x 41 x 24 mm
Protection Class	IP54
Measurement Time, Typical	< 0.5 s
Measurement Time, Max.	4 s
Automatic Deactivation	5 min
Battery Lifetime, Individual Measurements, Approx.	5000
Units of Measurement	m, ft
Storage Temperature	-20 °C to +70 °C
Measuring Range	0.15 – 40.00 m