Model RLS-4000

Float switch

For industrial applications, intrinsic safety Ex i

Selected documents
Sales contact Questions? Find a contact in your vicinity.


    • Combined level and temperature measurement of liquids in machine building
    • Control and monitoring tasks for hydraulic power packs, compressors and cooling systems

Special features

    • Media compatibility: Oil, diesel, refrigerants and other liquids
    • Level: Up to 4 switching outputs, freely definable as normally open, normally closed or change-over contact
    • Level and temperature: Up to 3 switching outputs, freely definable as normally open, normally closed or change-over contact and 1 bimetal temperature switch or Pt100/Pt1000, accuracy: Class B
    • Potential-free switching reed contacts


The model RLS-4000 float switch with optional temperature output has been designed for the recording of level and temperature at hazardous measuring points. The stainless steel used is suitable for a multitude of media, such as, for example, oil, diesel and refrigerants.

Measuring principle
A permanent magnet built into the float triggers, with its magnetic field, the potential-free reed contacts built into the guide tube. The triggering of the reed contacts by the permanent magnet is contact-free and thus free from wear.

Depending on customer wishes, the switching functions of normally open, normally closed or change-over can be realised for the defined liquid level.

The optional temperature output enables the medium temperature to be monitored by means of a preconfigured bimetal temperature switch or a Pt100/Pt1000 resistance signal.

Float switch
  • Float switchWIKA - Level monitoring with float switch
Wish list - Documents (0)

There are currently no documents on your wish list. You can add any document from the download area to your wish list. To do this, select the desired language using the flag symbol.

The maximum number of 20 entries was reached.

To receive your download link via e-mail, enter your address here:

The e-mail address is invalid.