Applications

Flowing Waters - Flood Protection

Flow Measurement Protected Area Drainage

Flow Measurement Protected Area Drainage
Shaft with immersed pumps and measurement systems
Flow Measurement Protected Area Drainage

Application

  • Steel pipeline DN 500
  • Fully filled
  • Groundwater without any pollution
  • Measurement system permanently immersed
  • due to short calming section

Definition of tasks

  • Detection of drained volumes in the low-lying protective dyke area of a large German river
  • High measurement accuracy despite short calming section
  • Immersed pumps and permanently overflown calming section require IP 68 for the sensors used
  • Maintenance-free measurement system required due to inaccessible measurement point
Flow Measurement Protected Area Drainage
Measurement priniciple
Flow Measurement Protected Area Drainage

Solution

  • Due to the lack of reflecting particles in the medium the ultrasonic transit time measurement Type NivuFlow 600 was used.
  • To achieve high accuracy and to compensate the swirl downstream of the pumps a crosswise 2-path measurement with 4 sensors was installed.
  • To avoid maintenance measures the velocity sensors were installed directly inside of the pressurised line using welded nozzles and clamping elements.

Advantages

  • High accuracy, reliability and free of maintenance

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