Hybrid Flow Measurement in Main Collector

Channel Networks - Fix Installation Measurements


Application

  • Hood profile 2200 x 1980
  • Partially filled and full
  • Precast concrete parts
  • Sedimentation and temporary overflow

Definition of tasks

  • Detection of flow rates in a large main collector of a combined sewage channel network ranging from low nightly discharge to flood events.
  • Due to sedimentation, stones and debris, sensors cannot be installed on the channel bottom.
  • During rainfall events, the collector may be completely flooded and may build up pressure.

Solution

  • The newly developed NivuFlow 7550 hybrid system with combined flow velocity measurement using contactless surface radar and a laterally installed medium-contacting cross correlation sensor was used.
  • The partially filled level is detected using ultrasound from top down, high levels and flood are detected by the pressure cell integrated in the cross correlation sensor.

Advantages

  • Contactless detection of flow rates in dry weather and at nighttime.
  • Reliable flow measurements even under extreme discharge conditions and overflow.


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