Bosch GLM 100 C Professional Manual Original página 29

OBJ_BUCH-1956-002.book Page 29 Monday, July 1, 2013 11:28 AM
Accuracy Check of the Distance Measurement
The accuracy of the distance measurement can be checked as
follows:
– Select a permanently unchangeable measuring section
with a length of approx. 1 to 10 metres; its length must be
precisely known (e.g. the width of a room or a door open-
ing). The measuring distance must be indoors; the target
surface for the measurement must be smooth and reflect
well.
– Measure the distance 10 times after another.
The deviation of the individual measurements from the mean
value must not exceed ±2 mm (max.). Log the measure-
ments, so that you can compare their accuracy at a later point
of time.
Working with the Tripod (Accessory)
The use of a tripod is particularly necessary for larger distanc-
es. Position the measuring tool with the 1/4" thread 19 onto
the quick-change plate of the tripod 29 or a commercially
available camera tripod. Tighten the measuring tool with the
locking screw of the quick-change plate.
Set the corresponding reference level for measurement with
a tripod by pushing button 10 (the reference level is the
thread).
Working with the Measuring Rail (see figures I–K)
The measuring rail 27 can be used for a more accurate grade
measurement result. Distance measurements are not possi-
ble with the measuring rail.
Place the measuring tool into the measur-
ing rail 27 as shown and lock the measur-
ing tool with locking lever 28. Press the
measuring button 2 to activate the "Meas-
uring rail" operating mode.
Regularly check the accuracy of the grade measurement by
carrying out a reversal measurement or with the spirit levels
of the measuring rail.
In case of greater deviation, the measuring tool must be recal-
ibrated. For this, press and hold the grade measurement but-
ton 3. Follow the directions on the display.
When operating the measuring tool in the measuring rail 27,
data transmission is not possible.
To end the "Measuring rail" operating mode, switch the meas-
uring tool off and remove it from the measuring rail.
Troubleshooting Causes and Corrective
–
Measures
Cause
Temperature warning indicator (k) flashing; measure-
ment not possible
The measuring tool is outside the
operating temperature range from
– 10 °C to + 50 °C (in the function
continuous measurement up to
+40 °C).
Bosch Power Tools
Cause
"ERROR" indication in the display
Addition/Subtraction of measured
values with different units of meas-
ure
The angle between the laser beam
and the target is too acute.
The target surface reflects too in-
tensely (e.g. a mirror) or insuffi-
ciently (e.g. black fabric), or the
ambient light is too bright.
The laser beam outlet 18 or the re-
ception lens 17 are misted up
(e.g. due to a rapid temperature
change).
Calculated value is greater than
1 999 999 or smaller than
–999 999 m/m
Indication ">60 °" or "<–60 °" on the display
The inclination measuring range
for the measuring mode and/or the
reference plane has been exceed-
ed.
"CAL" and "ERROR" indication in the display
The calibration of the grade meas-
urement was not carried out in the
correct sequence or in the correct
positions.
The surfaces used for the calibra-
tion were not accurately aligned
(horizontal or vertical).
The measuring tool was moved or
tilted while pressing the button.
Battery charge-control indicator (g), temperature warn-
ing (k) and "ERROR" indication in the display
Temperature of the measuring tool
not within the allowable charge-
temperature range
Corrective Measure
Wait until the measuring
tool has reached the op-
erating temperature
English | 29
Corrective Measure
Only add/subtract
measured values with
the same units of meas-
ure
Enlarge the angle be-
tween the laser beam
and the target
Work with the laser tar-
get plate 31 (accessory)
Wipe the laser beam out-
let 18 and/or the recep-
tion lens 17 dry using a
soft cloth
Divide calculation into
intermediate steps
2 3
/m .
Carry out the measure-
ment within the speci-
fied angle range.
Repeat the calibration
according to the instruc-
tions on the display and
in the operating instruc-
tions.
Repeat the calibration
on a horizontal or verti-
cal surface; if required,
check the surface first
with a level.
Repeat the calibration
and hold the measuring
tool in place while press-
ing the button.
Wait until the charge-
temperature range is
reached.
2 609 141 026 | (1.7.13)