Bosch Professional GLM 30 Notice Originale page 13

OBJ_BUCH-2099-004.book Page 13 Thursday, April 21, 2016 1:10 PM
Accuracy Check of the Distance Measurement
The accuracy of the measuring tool can be checked as follows:
– Select a permanently unchangeable measuring section with a length of approx. 3
to 10 metres; its length must be precisely known (e.g. the width of a room or a door
opening). The measurement should be carried out under favourable conditions,
meaning, the measuring distance must be indoors and the target surface for the
measurement must be smooth and reflect well.
– Measure the distance 10 times in succession.
The deviation of the individual measurements from the average value must not exceed
±4 mm over the entire measuring section in favourable conditions. Record the meas-
urements in order to be able to compare the accuracy at a later date.
Troubleshooting – Causes and Corrective Measures
Cause
Temperature warning indicator (g) flashing; measurement not possible
The measuring tool is outside the operat-
ing temperature range of –10 °C to
+45 °C.
"Error" indication in the display
The target surface reflects too intensely
(e.g. a mirror) or insufficiently (e.g. black
fabric), or the ambient light is too bright.
The laser beam outlet 8 or the reception
lens 7 are misted up (e.g. due to a rapid
temperature change).
The calculated auto-sum is greater than
99999 m.
Measuring result not plausible
The target surface does not reflect cor-
rectly (e.g. water, glass).
The laser beam outlet 8 or the reception
lens 7 are covered.
Obstruction in path of laser beam
Bosch Power Tools
English | 13
Corrective Measure
Wait until the measuring tool has reached
the operating temperature
Work with the laser target plate 9 (acces-
sory)
Wipe the laser beam outlet 8 and/or the
reception lens 7 dry using a soft cloth
Divide calculation into intermediate steps
Cover off the target surface
Make sure that the laser beam outlet 8 or
the reception lens 7 are unobstructed
Laser point must be completely on target
surface.
1 609 92A 297 | (21.4.16)