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Electric flow indicator

For flow monitoring

Basic information

The shortfall of limit values for flowing liquids in containers of all types is monitored by the electronic flow switch SW20, critical states and signaled triggered a message.



The electronic flow switch is used in areas where the limits of flows of liquids and air must be monitored e.g. in:

  • Containers of all kinds
  • Pipe-lines / - systems
  • Laboratories
  • Filter systems
  • Cleaning systems


General function

The electronic flow switch works on the calorimetric principle. It detects the flowing medium, and outputs an electrical signal equivalent. The heated Sensor probe is cooled by the surrounding medium. This change is detected and evaluated. The detection of the stored threshold value is indicated by an LED and an additional relay that both a normally open and a normally closed contact provide. If the threshold for a given flow rate is set, a heating of the medium must be avoided.



  • Compact design
  • Power supply with 24VDC or 230VAC
  • Self-sealing housing
  • Free adjustable switching point for signal



Data Sheet
Electronic flow monitoring
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