Accuracy Check - CST/BERGER RL25H Instrucciones De Funcionamiento Y Seguridad

Influences on Accuracy
The ambient temperature has the greatest
influence. Especially temperature differences
occurring from the ground upward can divert
the laser beam. The deviations play a role in
excess of approx. 65-ft measuring distance and
can easily reach two to four times the deviation
at 330-ft. Because the largest difference in
temperature layers is close to the ground, the
measuring tool should always be mounted on
a tripod when measuring distances exceeding
65-ft. If possible, also set up the measuring tool
in the center of the work area.
Checking the Leveling Accuracy
Apart from exterior influences, device-specific
influences (such as heavy impact or falling
down) can lead to deviations. Therefore, check
the accuracy of the measuring tool each time
before starting your work. A free measuring
distance of 50-ft on a firm surface between
two walls A and B is required for the check.
A reversal measurement must be carried out
over both axes X and Y (each positive and
n e g a t i v e ; 4 c o m p l e t e m e a s u r e m e n t s ) .
– Mount the measuring tool in the horizontal
position onto a tripod 23 (accessory) or place it
on a firm and level surface near wall A. Switch
the measuring tool on.
– After the leveling, mark the center of the laser
beam on wall A (point I).
– Rotate the measuring tool by 180°, allow it to
level in and mark the center point of the laser
A
A
d
All manuals and user guides at all-guides.com

Accuracy Check

beam on the apposing wall B (point II).
– Without turning the measuring tool, position
it close to wall B. Switch the measuring tool on
and allow it to level in.
– Align the height of the measuring tool (using
the tripod or by propping), so that the center
of the laser beam runs exactly against the
previously marked point II on wall B.
– Rotate the measuring tool by 180° without
changing the height. Allow it to level in and
mark the center point of the laser beam on wall
A (point III). Take care that point III is as vertical
as possible above or below point I.
– The difference d of both marked points I and
III on wall A amounts to the actual deviation of
the measuring tool for the measured axis.
Repeat the measuring procedure for the other
three axes. For this, turn the measuring tool
prior to each measuring procedure by 90°. On
the measuring section of 2 x 20m = 40 m, the
maximum allowable deviation is: 40 m x ±0.08
mm/m = ±3.2 mm. Consequently, the difference
d between points I and III for each of the four
individual measurements may not exceed
3.2 mm max. If the measuring tool should
exceed the maximum deviation in anyone of the
four measuring procedures, have it checked at
a Bosch after-sales service agent.
B
B
180°
-16-
A
50-ft
A
180°
B
B