Bosch GLM 150 C, Оригинальное руководство пользователя

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18 | English
temperature variations and after impact to the tool. After a
temperature variation, the measuring tool must acclimatise
for a while before calibration is performed.
Accuracy check of the distance measurement
You can check the accuracy of the measuring tool as follows:
– Choose a measuring section of approx. 3 to 10 m in
length that is permanently unchanged, the exact length of
which is known to you (e.g. room width, door opening).
The measurement should be performed under favourable
conditions, i.e. the measuring section should be indoors
with weak backlighting and the target area of the meas-
urement should be smooth and reflect well (e.g. a white-
painted wall).
– Measure the section ten times in succession.
The deviation of the individual measurements from the mean
value must not exceed ±2 mm over the entire measuring sec-
tion in favourable conditions. Record the measurements in
order to be able to compare the accuracy later on.
Checking accuracy and calibrating the target
indicator (crosshairs)
Check the accuracy of the alignment of the laser and target
indicator on a regular basis.
– Select a bright area at least five metres away with as little
illumination as possible (e.g. a white wall) as the target.
– Check whether the laser point is inside the target indic-
ator in the display.
If the laser point is not inside the target indicator, you must
recalibrate the target indicator.
To do so, select in the settings. Follow the directions on
the display.
For longer distances (of approx. more than five metres), a
target marker is also superimposed to mark the measuring
point.
Working with the tripod (accessory)
The use of a tripod is particularly necessary for larger dis-
tances. Place the measuring tool with the 1/4" thread
(17)
on the quick-release plate of the tripod (27) or a commer-
cially available camera tripod. Tighten it using the locking
screw of the quick-release plate.
Set the reference level for measurements with a tripod in the
settings (tripod reference level).
Errors – Causes and Corrective
Measures
Cause Corrective measures
Temperature warning flashes, measurement not pos-
sible
The measuring tool is outside
the operating temperature of
-10 °C to +45 °C (in the con- Wait until the measuring tool
has reached operating tem-
perature.
Cause Corrective measures
tinuous measurement func-
tion, up to +40 °C).
Display shows "ERROR"
Addition/subtraction of
measured values with differ-
ent units of measurement. Only add/subtract measured
values with the same units of
measurement.
Angle between laser beam
and target is too acute. Increase the angle between
the laser beam and the tar-
get.
Target surface is too reflect-
ive (e.g. mirror) or not re-
flective enough (e.g. black
material), or ambient light is
too bright. Use the laser target plate
(25) .
The laser beam output (19) ,
reception lens (18) or cam-
era (20) are fogged up (e.g.
due to a rapid temperature
change).
Wipe the laser beam output
(19) , reception lens (18) or
camera (20) dry with a soft
cloth.
Calculated value is larger
than +1,999,999 or smaller
than -999,999 m
2
/m
3
.
Divide the calculation into in-
termediate steps.
Display shows "CAL" and "ERROR"
The calibration of the grade
measurement has not been
carried out in the right order
or has not been carried out in
the correct positions. Repeat the calibration ac-
cording to the instructions
that appear on the display
and in the manual.
The surfaces used for calib-
ration were not precisely ho-
rizontal or vertical. Repeat the calibration on a
horizontal or vertical surface
and check the surfaces be-
forehand if necessary using a
spirit level.
The measuring tool has
moved or tilted when the
button was pressed. Repeat the calibration and
hold the measuring tool still
against the surface when
pressing the button.
Measurement result implausible
Target surface reflection not
distinct (e.g. water, glass). Cover the target surface.
The laser beam output (19) ,
reception lens (18) or cam-
era (20) is covered.
Keep the laser beam output
(19) , reception lens (18)
and camera (20) clear.
An incorrect reference level
has been set. Select a reference level that
is appropriate for the meas-
urement.
Obstruction in the path of the
laser beam. The laser point must be fully
on the target surface.
Bluetooth® cannot be activated
Batteries too weak. Change the batteries
No Bluetooth® connection
1 609 92A 4XP | (11.01.2019) Bosch Power Tools