Wastewater Treatment Plant - Discharge Area

Flow Measurement Using Inverted ''Goose Neck'' Syphon

Flow Measurement Using Inverted “Goose Neck” Siphon
Installed measurement
Flow Measurement Using Inverted “Goose Neck” Siphon


  • Pipe DN 150, made of stainless steel
  • Full filled
  • EMF, faultily installed

Definition of tasks

  • Accurate measurement with high operational reliability required, which currently cannot be guaranteed due to the installed EMF, air within the pipeline and a much too short calming section
  • Quick, easy and cost-efficient retrofitting
Flow Measurement Using Inverted “Goose Neck” Siphon
Measurement Setup
Flow Measurement Using Inverted “Goose Neck” Siphon


  • A transit time measurement system Type NivuSonic using 2 measurement paths has been used.
  • The sensors have been installed in a measuring pipe with integrated ball valves. This allows to replace sensors under process conditions at any time.
  • Crosswise path arrangement virtually eliminates crossflow during calculation.


  • Easy and robust installation using calibrated pipe segment
  • No bypass required
  • High accuracy and reproducibility

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