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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.
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Applications
Note
For best performance and limited maintenance requirements, keep in mind material
compatibility and flow patterns.
Ideal material characteristics
• low cohesion (flows well through chutes, similar to a liquid)
• low adhesion (does not stick to surfaces)
• low abrasion (will not wear out chutes, flowguide, or sensing plate)
• low causticity (will not damage internal flowmeter components)
12
Negative displacement
Normal gap
Operating Instructions, 08/2021, A5E51108132-AA
SITRANS WF100
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