Flow switch for pump protection
Flow switch for pump protection
(OP)
Hi,
For pumps pumping from a tank, our engineering has decided to use a flow switch for pump protection. I was wondering if the pump should also stop for low level in the tank, or if the flowswitch is enough.
thanks,
For pumps pumping from a tank, our engineering has decided to use a flow switch for pump protection. I was wondering if the pump should also stop for low level in the tank, or if the flowswitch is enough.
thanks,





RE: Flow switch for pump protection
From a tank, a flow transmitter with low flow interlock could provide pump protection. It would require a startup time delay. A low flow recirculation could help too. Mechanical flow switches are hopeless. Use the low level interlock from the level transmitter regardless of the flow interlock.
RE: Flow switch for pump protection
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RE: Flow switch for pump protection
RE: Flow switch for pump protection
A low level switch in the tank would prevent pumping below a level, perhaps preventing "uglies" from being pumped out.
They serve slightly different purposes.
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