Benefits of monitoring POWER instead of AMPS

As you start to load a motor the power factor improves rapidly. The current (Amps) doesn’t change significantly until the motor reaches 50% of capacity.

Power, on the other hand, is linear. A change in load is a change in power (HP or kW). This gives us a signal to monitor and control pumps:

-       When the flow rate is low, Power is low  

-       When the flow rate is high, Power is high

-       During light load conditions, caused by cavitation or dry running, change in Power is 10X more sensitive than Current (Amps)

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