How Do I Know What Flow Range to Select Before Purchasing a Flow Switch or Flow Meter?

When selecting a flow switch or flow meter, there are several things to consider. The rated flow rate of your pump is a good place to start, but keep in mind that the flow at the point of installation may not be the same as at the pump.

To find out the flow rate at the installation point, make a break in the line and use a bucket and a stopwatch to measure the amount of flow for one minute.  You now have a good idea of the flow rate.

Ideally, you want to select the flow range of the meter so that your nominal flow is near the middle of the range.  This will provide the most accurate and reliable measurement.

It is always a good idea to review your selection with a technical representative of the manufacturer.

At Proteus Industries, we offer a wide range of flow meter selection, which could be ideal for your application, and the technical support to help guide your selection.