2LS Tools Vega Original Instructions Manual - page 25
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2 609 140 906 • 16.2.12
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).
Troubleshooting
–
Causes and
Corrective Measures
Cause
Corrective Measure
Temperature warning indicator (k) flashing;
measurement not possible
The measuring tool is outside
the operating temperature
range from – 10 °C to
+ 50 °C (in the function con-
tinuous measurement up to
+40 °C).
Wait until the measur-
ing tool has reached
the operating temper-
ature
“ERROR” indication in the display
Addition/Subtraction of
measured values with differ-
ent units of measure
Only add/subtract
measured values with
the same units of
measure
The angle between the laser
beam and the target is too
acute.
Enlarge the angle be-
tween the laser beam
and the target
The target surface reflects
too intensely (e.g. a mirror) or
insufficiently (e.g. black fab-
ric), or the ambient light is too
bright.
Use a laser target
plate
The laser beam outlet 16 or
the reception lens 17 are
misted up (e.g. due to a rapid
temperature change).
Wipe the laser beam
outlet 16 and/or the
reception lens 17 dry
using a soft cloth
Calculated value is greater
than 999999 m/m
2
/m
3
.
Divide calculation into
intermediate steps
Indication “>60°” or “<–60°” on the display
The inclination measuring
range for the measuring
mode and/or the reference
plane has been exceeded.
Carry out the meas-
urement within the
specified angle range.
“CAL” and “ERROR” indication in the display
The calibration of the grade
measurement was not car-
ried out in the correct se-
quence or in the correct posi-
tions.
Repeat the calibration
according to the in-
structions on the dis-
play and in the operat-
ing instructions.
The surfaces used for the
calibration were not accu-
rately aligned (horizontal or
vertical).
Repeat the calibration
on a horizontal or verti-
cal surface; if re-
quired, check the sur-
face first with a level.
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