FLOW MEASUREMENT AND CONTROL SYSTEM FOR POSITIVE DISPLACEMENT PUMPS

摘要

A pump monitoring and flow control system that provides direct indication of discharge flow on a positive displacement or diaphragm injection-type pumps. The device (1) uses a "tell-tale" check valve that drives a proximity switch (20) each time the valve, installed as the output check valve on a standard injection pump, opens with discharge flow. The proximity switch (20) in turn signals the monitoring system while flow control is accomplished through an adjustable volume chamber in series with the output check valve.