Open Channel Flow Measurement

Wastewater Treatment Plant - Intake Area


  • Rectangular channel made of concrete, width 1m
  • Partially filled
  • Strong fluctuation between daily and nightly inflow


Definition of tasks

  • Continuous flow rate measurement in a WWTP intake area
  • Additional external level measurement shall be avoided
  • Cost-efficient, for monitoring only
  • No high accuracy is required
  • 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

Used products

Haven't found the appropriate product?

Product Consultation

You want to have best information about our products? Our experts will gladly develop together with you the best system solution for your application.


You have questions about your NIVUS products in use? Our service hotline will readily support you.

We are glad to have you here! For any question regarding water or digitisation we are happy to answer you call or your email message.
Im Täle 2
75031 Eppingen