Open channel flow measurement for wastewater treatment plants - Water and Wastewater

Application: Rectangular channel, width 1.0 m. Part filled. Made of concrete. Strong fluctuation between daily and nightly inflow.

Definition Of Task

  • Continuous flow rate measurement in a WWTP intake area
  • Additional external level measurement shall be avoided
  • Cost-efficient
  • Quick and easy sensor mounting


  • The flow measurement system Type OCM F operates based on the Doppler principle. A wedge-shaped flow velocity sensor has been installed in the center of the rectangular channel.
  • The flow velocity sensor has been equipped with a pressure measurement cell to avoid the need for an additional external level measurement


  • Easy, quick and robust installation
  • Cost-effective measurement
  • Velocity and level measurement in one sensor