Flow meter

摘要

A meter for determining flow rates and total volume of fluids normally mixed with a gas and delivered with a pulsating rather than a uniform flow rate, such as milk being delivered from a milking machine. The unit includes a housing having an upper, baffled, receiving chamber which initially reduces flow velocity and a second, lower chamber, having baffles or weirs for turbulence reduction prior to passage of the fluid through a particularly designed, double tapered orifice, to a measuring chamber. Within the second chamber, air and foam is separated from the milk prior to flow measurment. A plurality of electrically operated, vertically arranged probes are provided within the measuring chamber and these probes are rapidly monitored to determine the level of milk as passed through the orifice. The pulsating but relatively laminar flow causes the liquid level to oscillate between probes and the processing of the rapidly scanned probes provides data to determine the true flow rate. A low or end-of flow indicator is provided to control the milking machine or alert an attendant as to operating condition. The unit is hydraulically designed for ease of cleaning.