point level detection
Liquiphant FTL50

Compact vibration point level switch for liquids in all industries

  • Liquiphant FTL50 ©Endress+Hauser
  • Liquiphant FTL50 ©Endress+Hauser
  • Liquiphant FTL50 ©Endress+Hauser
  • Liquiphant FTL50 ©Endress+Hauser
  • Liquiphant FTL50 ©Endress+Hauser

Liquiphant FTL50 is a point level switch for use in hazardous areas with all international certificates. Useable in all industries. FTL50 offers functional safety SIL2/SIL3. With the second line of defense highest degree of safety and availability of the device can be guaranteed. Reliable measurement value, not affected by: flow, turbulence, bubbles, foam, vibration, bulk solids content or build-up.


  • Use in safety systems requiring functional safety to SIL2/SIL3 in accordance with IEC 61508/IEC 61511-1

  • International explosion protection certificates and overfill prevention certificate (WHG)

  • No calibration required, easy to start up

  • No mechanically moving parts: no maintenance, no wear, long operating life. Monitoring of fork for damage: guaranteed function

  • Second line of defense to protect the environmental

  • Variety of standardized process connections for all applications

  • Stainless steel (316L) and high-corrosion resistant sensor material (Alloy)

Field of application

Point level switch for all liquids.

  • Process connection: Threads, flanges and hygienic process connection (Tri-Clamp)

  • Temperature: -50 to +150°C (-58 to +302°F)

  • Pressure: -1 to +64bar (-14.5 to +928psi)

  • Sensor material: 316L, Alloy

  • International explosion protection certificates, WHG overfill prevention, EN10204-3.1, marine approval, ASME B31.3

Technical information

Documents / Software


Accessories / Spare parts

Density measurement of liquids with Density Computer FML621

Measurement of density, reference density, concentration of liquids in conjunction with a Liquiphant. Also for use in hazardous areas with international explosion protection certificates.

  • Density Computer FML621

    Measurement used in tanks and pipes without the need for additional pipework. The Density Computer converts the values to different units such as °Brix, °Baumé, °API etc.

    • Density computer for density, reference density, concentration of liquids

    • Intelligent medium detection in conjunction with a Liquiphant point level switch

    • Ambient temperature: -20 to +50°C

    More information >>>

Success stories

  • Doug Lopshire, Industrial Competency Center Manager at Louis Dreyfus, USA
    The cost reductions have enabled us to capture a return on our investment in just six months

    Doug Lopshire

    Industrial Competency Center Manager, Louis Dreyfus Commodities

    More information >>>

  • The solutions provided by Endress+Hauser are truly well thought-out and save time in my daily work!
    Endress+Hauser offers excellent tools over the entire plant life cycle. From the beginning to the end, they are truly well thought-out solutions that save me time in my daily work!

    Gunnar Fritsche

    Maintenance foreman, EMS GmbH, Industrial Park Schwarza Germany

    More information >>>

  • 1oo1 SIL3 capable process point level safety system

    4-20mADC FTL 81 Liquiphant tuning fork level system contributes to life cycle savings and risk reduction.

    More information >>>

  • Dow Chemical in Estarreja, Portugal had an issue with the stability of data. With the solution provided they are successful.

    Carlos João

    Instrumentation Engineer, Dow Chemical Company, Estarreja, Portugal

  • Increasing safety levels

    Our tank overfill prevention solution with independent high-level alarm was installed in the Middle East and helped our customer minimize risks of major hazards.

    More information >>>


Endress+Hauser B.V.
Nikkelstraat 6 1411 AJ Naarden Postbus 5102 1410 AC Naarden Netherlands
Tel.: +31 (35) 6 95 86 11
Fax: +31 (35) 6 95 88 25

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