Siemens SITRANS WF100 Operating Instructions Manual page 14

Solid flowmeters
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Description
Negative displacement
A negative stop protects the load cell against excessive negative displacement which could
functionally destroy it. The negative stop is factory set so that the output signal is limited to -20
mV when the load cell is forced to travel in the negative direction.
Under no-flow conditions, the load cell/sensing plate assembly is at rest at static zero. Under this
condition, the negative stop should not contact the sensing plate, and the output signal from the
load cell will be approximately -5 to 0 mV DC.
1
1
Applications
Note
For best performance and limited maintenance requirements, keep in mind material
compatability and flow patterns.
12
Negative displacement
Normal gap
Operating Instructions, 02/2012, 7ML19985NB01-01
SITRANS WF100

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