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At an elevated tank of a communal drinking water supply, only the outlet was fitted with venturi nozzles for quantification of the flow rate, which was calculated based on the geometry and filling level of the container.

To improve the operational control and for early detection of possible water loss through leaks in the piping system, the rate of water flowing in the tank also had to be measured. However, due to the difficult installation conditions, inline measuring devices could not be installed.

FLEXIM’s non-invasive ultrasonic FLUXUS flowmeters proved to be the ideal solution in this instance. Since clamp-on ultrasonic transducers are simply attached to the outside of the pipe, there is no need to disrupt the supply during retrofitting. Even under difficult flow conditions, the use of a dual channel configuration compensated for disturbed flow profiles and allows the FLUXUS ultrasonic flowmeters to accurately and reliably detect incoming water flow rates.


  • Simple retrofitting without any pipework or service interruption - even in space constricted areas
  • Wear and maintenance-free measurement
  • Highly hygienic: no direct contact between the measuring system and the medium