The measuring principles of weir and flume open channel flowmeters are introduced and a new calculation formula for weirflowmeter is stated.
介绍堰式和槽式明渠流量计的测量原理，提出了一种新的堰式流量计算公式。
2
The calculation of right angled triangle weir-type open channel flowmeter is described. A high precision experiential flow calculating formula is given.