Monitor, display, totalise and log flow through any flume or weir. The automatic flow reporting system prepares and stores daily or hourly flow including total, minimum and maximum flow rates, or logs up to 50,000 time and date stamped data points. The OCF-IV includes an isolated 4-20mA output, 3 control relays are programmable for flow proportional pulse output and/or level alarm. Features a password protected keypad system for easy calibration. Non-contacting sensor is rated intrinsically safe with optional safety barrier. Temperature compensated for continuous high accuracy.