2LS Tools VEGA Manual Original página 25

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OBJ_BUCH-1618-001.book Page 25 Thursday, February 16, 2012 2:01 PM
face. For improved visibility of the laser beam when
working outdoors and when the sunlight is intense,
use laser viewing glasses and laser target plate, 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. In-
cluded 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 a laser target plate 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 (see figure H)
Regularly check the accuracy of the grade measure-
ment. This is done by carrying out a reversal measure-
ment. For this, place the measuring tool on a table and
measure the grade. Turn the measuring tool by 180 °
and measure the grade again. The difference of the in-
dicated reading may not exceed by more than 0.3 °
(max.).
In case of greater deviation, the measuring tool must
be recalibrated. For this, press and hold the grade
measurement button 3. Follow the directions on the
display.
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 opening). The measuring distance
must be indoors; the target surface for the meas-
urement 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
measurements, so that you can compare their accura-
cy at a later point of time.
Working with the Tripod
The use of a tripod is particularly necessary for larger
distances. The measuring tool can be screwed onto a
commercially available tripod using the 1/4" thread 19
on the bottom side of the housing.
Set the corresponding reference level for measure-
ment with a tripod by pushing button 10 (the refer-
ence level is the thread).
2 609 140 906 • 16.2.12
Troubleshooting Causes and
–
Corrective Measures
Cause Corrective Measure
Temperature warning indicator (k) flashing;
measurement not possible
The measuring tool is outside Wait until the measur-
the operating temperature ing tool has reached
range from – 10 °C to the operating temper-
+ 50 °C (in the function con- ature
tinuous measurement up to
+40 °C).
"ERROR" indication in the display
Addition/Subtraction of Only add/subtract
measured values with differ- measured values with
ent units of measure the same units of
measure
The angle between the laser Enlarge the angle be-
beam and the target is too tween the laser beam
acute. and the target
The target surface reflects Use a laser target
too intensely (e.g. a mirror) or plate
insufficiently (e.g. black fab-
ric), or the ambient light is too
bright.
The laser beam outlet 16 or Wipe the laser beam
the reception lens 17 are outlet 16 and/or the
misted up (e.g. due to a rapid reception lens 17 dry
temperature change). using a soft cloth
Calculated value is greater Divide calculation into
2 3
than 999999 m/m /m . intermediate steps
Indication ">60°" or "< – 60°" on the display
The inclination measuring Carry out the meas-
range for the measuring urement within the
mode and/or the reference specified angle range.
plane has been exceeded.
"CAL" and "ERROR" indication in the display
The calibration of the grade Repeat the calibration
measurement was not car- according to the in-
ried out in the correct se- structions on the dis-
quence or in the correct posi- play and in the operat-
tions. ing instructions.
The surfaces used for the Repeat the calibration
calibration were not accu- on a horizontal or verti-
rately aligned (horizontal or cal surface; if re-
vertical). quired, check the sur-
face first with a level.
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