• Non-Contacting Ultrasonic Sensor
• Accurate and Verifiable
• Built-in 50,000 point Data Logger
• RS232 Serial Output and Windows Software
• Isolated 4-20mA Output
• Totalizer and 3 Programmable Control Relays
• Password Protected
• Simple 3-key Calibration
• MANUFACTURER: Greyline InstrumentS

Continuously monitor, display, totalize and data log flow through any flume or weir. The OCF-IV includes a non-contacting ultrasonic sensor that mounts just 8" (203.2 mm) above the flowing water. It is accurate (±0.25%) and reliable. There is no obstruction to flow and no fouling. Use the built-in Keypad/menu system to select your flume or weir from the Menu and to choose measurement units (gallons, liters etc.) 

The Greyline OCF-IV includes built-in 50,000 point Data Logger and flow reporting system. Retrieve data logs with 'Greyline Logger' software – included free with each OCF-IV. Connect the RS232 output directly to the serial port on your PC or Laptop, or by dial-up connection through modems and phone lines.

Use the isolated 4-20mA to transmit flow to remote chart recorders or displays, and the 3 control relays are programmable for level/flow alarm, and flow proportionate pulse (for samplers, chlorinators or remote totalizers). An intrinsically safe sensor is optional. The separate, watertight electronics/display enclosure is mounted at a convenient location within 500 ft (150 m) of the sensor.