The head and flow rate of a pump characterize the pump performance. which help determine whether maintenance is needed. In the proposed method. instead of a traditional flowmeter and manometer. https://www.diegojavierfares.com/deal-alert-Has-the-Tribulation-Begun-Study-Guide-Avoiding-Confusion-and-Redeeming-the-Time-in-These-Last-Days-must-buy/