Trimod'Besta Level switches

Standard range

Switch modules

  • Switch elements: microswitches and proximity switches
  • SPDT and 2xSPDT (SIL 1 and SIL 2)
  • Pneumatic with ON/OFF output
  • Pneumatic with proportional output
  • Housings made of aluminium and Stainless steel (CrNiMo)
  • High and low temperature versions
  • IP65 to IP68 protection
  • Explosion proof versions
  • Self lifting terminals for perfect connections


Flange modules

  • Stainless steel 1.4408 square flange, 92 mm pitch circle diameter (-196 to 300°C)
    Option: Round flange ss 1.4571 incl. gasket (-196 to 400°C)


Float modules

  • Fixed Operating differential 12 mm
  • Adjustable Operating differential for pump control, vertical max. 2840 mm,
    Horizontal max. 557 mm
  • Stainless steel (CrNiMo) and Hastelloy floats
  • NACE compliant floats
  • Float modules for separation layer monitoring
  • Stainless steel floats with polyamide and halar coating

Electric and electronic switch elements with:

  • 1 Microswitch (SPDT) with silver contacts
  • 2 Microswitches (2x SPDT) with silver contacts, electrically isolated
  • 1 Microswitch (SPDT) with gold-plated contacts, for intrinsically safe circuits
  • 2 Microswitches (2x SPDT) with gold-plated contacts, for intrinsically safe circuits
  • 1 Proximity switch according to NAMUR / EN 50227, for intrinsically safe circuits
  • 1 Safety proximity switch according to NAMUR / EN 50227, TÜV-tested, for intrinsically safe circuits

Marine approvals and registrations of Trimod'Besta limit switches


Electric and pneumatic level switches are available to the marine industry, in light, heavy duty and explosion proof versions.


Safety Integrity Level (SIL)


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