Siemens SIWAREX WL230 BB-S SA Manuale dell'apparecchiatura - Pagina 17
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Figure 3-5
In this state the load cell and the pressure pieces together form a self-centering unit. The
compact mounting unit permits sideways displacement of the top plate, and hence of the load
bearing implement, by up to 3 millimeters. The countersunk head screws provide lifting
protection and, to a limited extent, pendulum limitation.
3.3.2
Guide element
A guide element prevents that the top plate moves in exactly one direction. All other directions
are free.
When arranged appropriately, three guide elements prevent the load bearing implement from
moving horizontally. The movement in the measuring direction is not restricted. Expansion of
the load bearing implement as a result of changes in temperature or load is not prevented.
Transverse forces acting on the load bearing implement are routed directly into the foundation.
With more than three guide elements, the risk exists that the guide elements tension each other.
This implies measuring errors.
Figure 3-6
SB-S SA
Equipment Manual, 12/2020, A5E02390707B-03
Operating state
Compact installation unit with load cell and guide element
Description
3.3 Principle of operation
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