Liquiphant FTL41

Liquiphant FTL41 ©Endress+Hauser

The vibronic measuring principle explained

Liquiphant FTL41 ©Endress+Hauser

Basic point level switch Liquiphant FTL41

The vibronic level switch in basic applications reduces complexities in your plant

Over 6 million installed Liquiphant point level switches in the field worldwide prove the day-to-day realiability of this device. With its active sensor technology you always be sure that your device is working correctly.
In addition there is no need of adjustment to different media.

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  • Process Connection
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  • Lợi ích

    • One measuring system for any liquid. Simple to use with plug and play functionality based on active sensor technology

    • Better long-term stability compared to float switches due to no mechanically moving parts

    • Repeatability of switching point

    • Universal...

  • Phạm vi ứng dụng

    Point level switch with extension tube for all liquids.

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

    • Temperature: -40 to +150°C (-40 to +302°F)

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

    • Sensor material: 316L

    • ...

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  • Measuring principle

    Vibration Liquids

  • Characteristic / Application

    Compact vibronic device with an optional pipe extension up to 2 m;

    Modular housing concept;

    Wide range of certificates

  • Specialities

    RFID TAG for easy identification,

    Plug and play functionalities

  • Supply / Communication

    10...55V / DC-PNP 3-wire

    19...253V AC or 19...55V DC / relays


  • Ambient temperature

    -40 °C...+70 °C

    (-40 °F...+158 °F)

  • Process temperature

    -40 °C...+150 °C

    (-40 °F...+302 °F)

  • Process pressure absolute / max. overpressure limit

    Vacuum...40 bar

    (Vacuum...580 psi)

  • Min. density of medium

    0.5 g/cm³

    (0.4 g/cm³ optional)

  • Main wetted parts


  • Process connection


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



    ASME 1"...4"

    JIS 25A...50A

  • Process connection hygienic

    Tri-Clamp ISO2852

  • Sensor length

    Up to 2 m

  • Communication

    DC-PNP 3-wire



  • Certificates / Approvals

    ATEX, IEC Ex,

  • Safety approvals

    Overfill prevention WHG

  • Design approvals

    EN 10204-3.1

    ASME B31.3

  • Components

    FTL325N Interface NAMUR

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