Usually water flow measured by invasive - mechanical (differential pressure,rotor), electronic (thermotransfer); and noninvasive - electromagnetic, ultrasonic methods
Re: How to measure water flow and its pressure? need your he
HI DEAR,
RICKLY USA AND OTT THESE ARE THE TWO COMPANIES THAT DEAL IN WATER MEASURING INSTRUMENTS FROM THERE WEB SITE I THINK YOU GOT A LOT OF MATERIAL FOR YOUR PROJECT.