Bosch PLR 50 C Betriebsanleitung Seite 41

OBJ_BUCH-2326-002.book Page 41 Friday, November 7, 2014 10:15 AM
Influence Effects on the Measuring Range
The measuring range depends upon the light conditions and the reflection properties
of the target surface. For improved visibility of the laser beam when working outdoors
and when the sunlight is intense, use the laser viewing glasses 10 (accessory) and the
laser target plate 11 (accessory), or shade off the target surface.
Influence Effects on the Measuring Result
Due to physical effects, faulty measurements cannot be excluded when measuring 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 11 (accessory) on these surfaces.
Furthermore, faulty measurements are also possible when sighting inclined target
surfaces.
Also, air layers with varying temperatures or indirectly received reflections can affect
the measured value.
Accuracy Check and Calibration of the Grade Measurement
Regularly check the accuracy of the grade measurement. To do so, regularly calibrate
the tilt sensor (see "Basic Settings", page 35). Follow the instructions on the touch-
screen.
We recommend that you perform an accuracy check and if necessary a calibration of
the measuring tool after extreme temperature variations and after impact to the tool.
After a temperature variation, the measuring tool must acclimatise for a while before
grade calibration is performed.
The measuring tool will automatically suggest a calibration after severe variations in
temperature.
Accuracy Check of the Distance Measurement
The accuracy of the distance measurement can be checked as follows:
– Select a permanently unchangeable measuring section which is approx. 3 to 10 m
long and which you know the exact length of (e.g. room width, door opening). The
measuring section must be indoors, and the target surface of the measurement
must be smooth and reflect well.
– Measure the distance 10 times after another.
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