Hybrid Flow Measurement in Main Collector
Channel Networks - Fix Installation Measurements
Application
- Hood profile 2200 x 1980
- Part 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.
- At 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 part 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.