• single- or multi electrode systems(up to 5 electrodes)
  • simple mounting
  • process connection and housing from Delrin, PP, PTFE or stainless steel
  • electrodes from stainless steel
  • cable with PTFE coating
  • max. pressure: atmospheric, max. temperature: 90 °C
  • Electrode relay for alarm or for pump control see data sheet FKE
  • max. probe length: 15 m
FK11 Conductive level switch with rope sensor

More informations

The conductive rope probes of type FK11 are suitable to detect the level of conductible liquids along with the electrode relay FKE.

An alternating current is connected to an electrode insulated of the vessels casing. If this electrode is wetted a small current flows from the electrode to the casing of the vessel (in the case of plastic vessels, a separate common ground electrode is used).

This current is detected by the electrode relay and output as a switching signal.

Typical applications

  • • To detect the fill limits in tanks containing conductive liquids
  • • To report whether the tank is empty or full
  • • To switch over between to filling heights
  • • To provide overflow protection
  • • To provide dry running protection


  • No moving parts
  • • Not influenced by density of fluid

PDF Information

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Electronic Level Switches

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