APPARATUS FOR MEASURING AVERAGE FLOW RATE

A device for measuring a duration of a liquid discharge having a hollow receptacle. The receptacle has an inlet port adjacent its upper end to receive the liquid discharge, and a cup-shaped pan below the inlet port to receive the liquid passing through the inlet port. The pan has a bore extending through the pan at a lower portion thereof and has an upper edge to direct overflow from the pan into a lower part of the receptacle. The receptacle also has a chamber below the pan communicating with the pan bore to collect liquid from the pan passing through the bore and to measure the period of time of the liquid discharge as indicated by the height of liquid collected in the chamber. Means is provided to also determine the total volume of the liquid discharge, and the average flow rate of the discharge may be determined from the measured volume and the time period of the discharge.