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Need appropriate Sensor to Trigger the Gravity Flow for a pump

Need appropriate Sensor to Trigger the Gravity Flow for a pump

We have a water based flow system as shown in the attached picture.

Water is flowing through gravity in a 65 mm Pipe Line. But the flow of water through the pipe line would be intermittent. So to avoid the dry run on the pumps we want to trigger the pump contactor through a signal from the flow switch that we are planning to install in the pipeline.

The current model of flow switch that we are planning to use is as shown below:

But we are not sure if the flow switch can work as the flow switch, as the flow switch terminals are very high and we are not sure if flow gravity can generate enough pressure so that the flow switch can sense a signal

So can you please suggest a suitable Sensor for the Same.

RE: Need appropriate Sensor to Trigger the Gravity Flow for a pump

You may be better advised to discharge into a sump.
Pump out of the sump.
Use a level switch on the sump.
Yes there may be problems installing a sump.
Most likely the problems associated with a sump will be easier to solve than the problems associated with a flow switch.
Problem #1 There may not be any flow to start the pump until the pump starts!!

"Why not the best?"
Jimmy Carter

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