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Last Updates: 15/02/2021

Endress+Hauser Liquiphant FTL51 Vibronic Point level detection

Liquiphant FTL51 is a point level switch with extension tube 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
  • 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)

Point level switch with extension tube for all liquids.

  • Process connections: Threads, flanges and hygienic process connection (Tri-Clamp)
  • Temperature: -50 to +150°C (-58 to +302°F)
  • Pressure: -1 to +100bar (-14.5 to +1,450psi)
  • Sensor material: 316L, Alloy
  • International explosion protection certificates, overfill prevention WHG, SIL
  • Measuring principle

    Vibration Liquids

  • Characteristic / Application

    Modular housing concept
    wide range of process connections
    Analogue and bus interfaces
    Extensive certificate range (e.g. Ex,WHG)
    pipe extension up to 3m (6m option)

  • Specialities

    Foamdetection
    Detect a densitychange
    second line of defense

  • Supply / Communication

    PROFIBUS PA
    19…253V AC
    10…55V DC-PNP
    19…253V AC or 10…55V DC
    8/16mA, 11…36V DC
    NAMUR
    PFM

  • Ambient temperature

    -50 °C…+70 °C
    (-58 °F…+158 °F)

  • Process temperature

    -50 °C…+150 °C
    (-58 °F…+302 °F)

  • Process pressure absolute / max. overpressure limit

    Vacuum…100 bar

  • Min. density of medium

    0.5g/cm³(0.4g/cm³ optional)

  • Main wetted parts

    316L / Alloy

  • Process connection

    Thread:

    G3/4A, G1A, R3/4″, R1, NPT3/4, NPT1

    Flange:

    DN25…DN100,

    ASME 1″…4″,

    JIS 25A…100A

  • Process connection hygienic

    Tri-Clamp ISO2852

  • Sensor length

    Length 130mm (5.12″) (Liquiphant II)
    148mm…6000mm (5.83″…236″)

  • Communication

    PROFIBUS PA
    19…253V AC
    10…55V DC-PNP
    19…253V AC bzw 10…55V DC
    8/16mA, 11…36V DC
    NAMUR
    PFM

  • Certificates / Approvals

    ATEX, FM, CSA C/US, IEC Ex, TIIS, INMETRO, NEPSI

  • Safety approvals

    Overfill prevention WHG

    SIL2/ SIL3

  • Design approvals

    EN 10204-3.1

    NACE MR0175, MR0103

    ASME B31.3

    AD2000

  • Marine approval

    GL/ ABS/ DNV

  • Options

    Heavy duty stainless steel housing mainly for the oil and gas industry

  • Components

    FTL325P/FTL375P Interface PFM
    FTL325N/FTL375N Interface NAMUR

  • Successor

    Liquiphant FTL51B

Datasheet: Liquiphant M FTL50, FTL51, FTL50H, FTL51H Technical Information

Technical Information Liquiphant M Density and Density Computer FML621

Weld-in adapter, process adapter and flanges

Liquiphant M FTL51C Technical Information

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