AVFM-II Area-Velocity Flow Monitor

  • For Open Channels and Pipes

  • Ultrasonic - Measures Velocity + Level to Calculate Flow

  • No Flume or Weir required

  • 3 Isolated 4-20mA Outputs (Flow, Level and Velocity)

  • Totalizer and 2 Programmable Control Relays

  • Simple 3-key Calibration - Password Protected

  • Optional Intrinsically Safe Sensor

  • Optional built-in 50,000 point Data Logger and Software

 AVFM Flowmeter for partially filled Pipes and Rectangular Channels

AVFM Area-Velocity Flow Monitor

Submersible Ultrasonic Sensor measures Level & Velocity Monitor flow through open channels, partially full sewer pipes and surcharged pipes without a flume or weir. Ideal for stormwater, combined effluent, raw sewage, irrigation water and streams. 

The AVFM-II uses a submerged ultrasonic sensor to continuously measure both Velocity and Level in the channel. The sensor is a completely sealed ultrasonic unit with no orifices or ports. It mounts inside a pipe or at the bottom of a rectangular, trapezoid or egg-shaped channel. Calibration is simple: enter the pipe diameter or channel width and the AVFM-II computes the flow volume and displays the flow rate.