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Point level detection
Liquiphant FTL51C

Point level switch for liquids with highly corrosion-resistant coating

  • Liquiphant FTL51C coated ©Endress+Hauser
  • Liquiphant FTL51C coated ©Endress+Hauser
  • Liquiphant FTL51C coated ©Endress+Hauser
  • Vibronic measuring principle

  • Liquiphant with permanent function check is the safe choice for point level detection in liquids

Liquiphant FTL51C is a point level switch with extension tube and highly corrosion resistant coating. For use in hazardous areas with all international certificates. Useable in all industries. FTL51 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 values, not affected by: changing media properties, flow, turbulences, gas bubbles, foam, vibrations or build-up.


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

  • Different plastic coating (PFA) and enamel coating for applications with aggressive medias

  • 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

Field of application

Point level switch for all liquids with highly corrosion-resistant coating.

  • Process connections: Flanges and hygienic process connection (FDA conform with PFA)

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

  • Pressure: -1 to +40bar (-14.5 to +580psi)

  • Sensor material: ECTFE, PFA (Edlon, Rubyred, conductive), Enamel

  • International explosion protection certificates, overfill prevention WHG, SIL, hygienic certificates, marine approvals

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Predecessor: CS1103, CS1113, CS1203, CS1213, CS1603, CS1613, FDL30, FDL31, FDL35, FDL36, FTL360, FTL361, FTL365, FTL366

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.


Endress+Hauser Instruments International AG
ул. Абдуллиных 66 050010, Алматы Kazakhstan
Tel.: +7 727 345 06 60
Fax: +7 727 345 06 61

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