Ultrasonic area velocity open channel flow-meter Greyline Instruments
0-15 m/sec

AVFM-II Area-Velocity Flow Meter

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.

- 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

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