Orifice Plates for Furrow Flow Measurement: Part II - Design and Field Use
ORIFI RIFICES, are potentially accurate furrow flow CES, devices. Flow measurement accuracy decreases with head loss. Orifice head loss will increase upstream infiltration. Thus, the head loss range must be constrained to maintain measurement accuracy. Design equations are developed for 3-hole orifice plates which give a 23:1 flow range with a 5:1 head loss range. A