Last Updates: 21/04/2021

E+H Liquiphant FTL85 Vibronic Point Level Switch

Liquiphant FTL85 is a coated point level switch for use in hazardous areas with all international certificates. FailSafe overfill prevention in applications with functional safety up to SIL3 with one device. With high corrosion-resistant coating made of enamel, ECTFE and various PFA materials. 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 SIL3 in accordance with IEC 61508 Ed.2.0/ IEC 61511-1/ISA 84-1 and DIN EN ISO 13849
  • Proof test: proof testing interval up to 12 years, Slave devices tested at the press of a button
  • Permanent self-monitoring/internal redundancy
  • 4-20mA interface (acc. to NAMUR NE 06/NE 43): easy integration via the switching unit (Nivotester FailSafe FTL825) with a two-channel output (safety contacts) and locking function or direct integration into a safety PLC
  • No adjustment: quick, low-cost startup
  • No mechanically moving parts: no maintenance, no wear, long operating life
  • Monitoring of fork for damage, corrosion, buildup and mechanical blocking

Point level switch for liquids up to SIL3.

  • Process connections: Threads and flanges
  • Temperature: -50 to +150°C (-76 to +300°F)
  • Pressure: -1 to +40bar (-14.5 to +580psi)
  • Sensor length: Extension pipe up to 3m (9.8ft)
  • Sensor material: Enamel, ECTFE and various PFA materials
  • International explosion protection certificates, overfill prevention WHG, SIL
  • Measuring principle

    Vibration Liquids

  • Characteristic / Application

    Coated point level switch for MIN and MAX safety applications up to SIL3,
    Dual Sealing/ Second line of defense,
    Modular housing concept

  • Specialities

    Outstanding features: 
    – permanent LIVE signal monitors function safety

    – failsafe design and

    – high availability of the measuring values

  • Supply / Communication

    2-wire 4…20 mA

  • Ambient temperature


  • Process temperature


  • Process pressure absolute / max. overpressure limit

    Vacuum…40 bar
    (580 psi)

  • Min. density of medium

    Density from 0.4 g/cm3
    (0.4 SGU)

  • Main wetted parts

    With high corrosion-resistant coating made of enamel, ECTFE and various PFA materials

  • Process connection



    ASME 1″…4″,

    JIS 10K…20K

  • Sensor length

    Extension pipe up to 3 m (9.8 ft)

  • Communication

    2-wire 4…20 mA

  • Certificates / Approvals


  • Safety approvals

    Overfill prevention WHG

    Leakage Detection


  • Options

    AlloyC Material

    PWIS free

    Pressure tight feed through

    Weather protection

  • Components

    Nivotester FTL825, Transmitter

Datasheet : Liquiphant FailSafe FTL80, FTL81, FTL85 Technical Information

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