Protection Against Explosion - Siemens SIWAREX WL280 Operating Instructions Manual

Application planning

4.6 Protection against explosion

To ensure that no force components occur in the measuring direction, you must install guide
elements at precise right angles to the effective direction of the load cells.
Three guide elements are sufficient to statically fix a weighing platform or container.
Note
Weighing errors
With four guide elements, there is a risk of the guide elements mutually tensioning, which in
turn induces weighing errors. If you nevertheless want to use four guide elements, the guide
elements must be installed with a sufficient amount of play.
Ensure that the guide elements to be used comply with the principles applicable to weighing
technology.
4.6 Protection against explosion
There is no potential risk of ignition from the installation units of the load cells. Installation
units are therefore not subject to the Atmosphère explosible ATEX 2014/34/EU.
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Operating Instructions, 09/2016, A5E32605810A-03
RN-S SA