Q: What is the most important things to measure within a pumping system? There are many measurements that can be made in a pumping system that can be used for control of the system, or monitoring the health of the equipment. If we focus on the pump's hydraulic condition, it is a good idea to measure the wire-to-water efficiency of the pump and motor, and include the variable frequency drive if it is so equipped. The critical measurements to calculate the wire to water efficiency(overall) are pressure, flow and electrical input power.
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