12 Optional accessories
Documentation set
SL 800
12.1 Adjust the counterweight for the height adjustment of the instrument base
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000000-2268-355-DokS-GB-300719
12.1 Adjust the counterweight for the height
adjustment of the instrument base
Depending on the optional components and accessories mounted
on the device, it is possible to adjust the compensating spring force
to the height adjustment of the instrument base. This is done by
activating or deactivating up to two additional springs.
The weight compensation of the device is set at the factory so that
the weight of the observation and illumination unit and the
counterweight of the weight compensation are approximately
equal in the middle range of the height adjustment. This enables
easy height adjustment. If additional components or accessories are
mounted on or removed from the device, the preset equilibrium
will shift accordingly. The height adjustment of the device may then
no longer be smooth enough. The adjustable weight compensation
allows to compensate for the weight of additional components and
accessories in defined steps.
Four weight compensation steps can be set by means of two
springs. The interaction of the springs is shown in the following
table:
Compensation step
Weight of
additional compo-
nents
Balance spring
Left
Right
1
Factory setting
according to
package check list
Fixed
Fixed
2
+
Fixed
Released
3
++
Released
Fixed
4
+++
Released
Released
A released spring means an additional spring force which
counteracts the weight of the additional components. The smallest
additional spring force (1) results when both springs are fixed. The
highest additional spring force (4) results when both springs are
released.
Figure 19: Instrument base with fixed (left) and released (right) springs
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