English | 21
Bosch Power Tools 2 609 140 620 | (14.7.11)
Influence Effects on the Measuring Result
Due to physical effects, faulty measurements cannot be excluded when measur-
ing on different surfaces. Included here are:
– Transparent surfaces (e.g., glass, water),
– Reflecting surfaces (e.g., polished metal, glass),
– Porous surfaces (e.g. insulation materials),
– Structured surfaces (e.g., roughcast, natural stone).
If required, use the laser target plate 20 (accessory) on these surfaces.
Also, air layers with varying temperatures or indirectly received reflections can
affect the measured value.
Sighting with the Alingment Aid (see figure D)
With the alignment aid 8, sighting over larger distances is a lot easier. For this,
look alongside the aligning aid on the top side of the measuring tool. The laser
beam runs parallel to this line of sight.
Troubleshooting – Causes and Corrective Measures
Cause Corrective Measure
Temperature warning indicator (c) flashing; measurement not possible
The measuring tool is outside the oper-
ating temperature range from – 10 °C
to + 50 °C (in the function continuous
measurement up to +40 °C).
Wait until the measuring tool has
reached the operating temperature
Battery low indicator (b) appears
Battery voltage decreasing (measure-
ment still possible)
Replace batteries/rechargeable bat-
teries
Battery low indicator (b) flashing; measurement not possible
Battery voltage too low Replace batteries/rechargeable bat-
teries
“Error” and “––––” indication in display
The angle between the laser beam and
the target is too acute.
Enlarge the angle between the laser
beam and the target
The target surface reflects too intense-
ly (e.g. a mirror) or insufficiently (e.g.
black fabric), or the ambient light is too
bright.
Work with the laser target plate 20
(accessory)
The laser beam outlet 16 or the recep-
tion lens 17 are misted up (e.g. due to
a rapid temperature change).
Wipe the laser beam outlet 16 and/or
the reception lens 17 dry using a soft
cloth
Calculated value is greater than
99999 m/m
2
/m
3
.
Divide calculation into intermediate
steps
“Error” indication flashes at in display (top)
Addition/Subtraction of measured val-
ues with different units of measure
Only add/subtract measured values
with the same units of measure
Unreliable measuring result
The target surface does not reflect cor-
rectly (e.g. water, glass).
Cover off the target surface
The laser beam outlet 16 or the recep-
tion lens 17 are covered.
Make sure that the laser beam outlet
16 or the reception lens 17 are unob-
structed
Measuring result not plausible
Wrong reference level set Select reference level that corre-
sponds to measurement
Obstruction in path of laser beam Laser point must be completely on tar-
get surface.
OBJ_DOKU-27422-001.fm Page 21 Thursday, July 14, 2011 11:09 AM
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