The AVFM Area-Velocity Flow Meter includes a submerged ultrasonic sensor that is installed at the bottom of an open pipe or channel. Exposed materials are all plastic so the sensor resists fouling and corrosion. It has no moving parts and no orifices, ports or electrodes. The AVFM displays and totalizes flow.

It includes two 4-20mA outputs (individually programmable for Flow, Level or Velocity), plus three control relays for level alarms or flow proportionate pulse output for samplers and chlorinators. It is easy to calibrate with the built-in, 3-button keypad and menu system. A built-in 50,000 point data logger with RS232 output is optional. Intrinsic Safety Barriers for sensor and cable installation in hazardous rated channels is also optional.