Capacitance
Level measurement
Liquicap FMI52

Liquicap FMI52 ©Endress+Hauser
Liquicap FMI52 ©Endress+Hauser

Capacitance level measurement with active build-up compensation

For continuous level and interface measurement in liquids - for large measuring ranges

Liquicap FMI52 is a reliable fully insulated rope probe for continuous level monitoring in liquids, particularly in small tanks, build-up forming media and extremely high temperatures - especially for large measuring ranges. The measurement is independent of the dielectric constant (dc). Used in conjunction with Fieldgate FXA320 (remote measured value interrogation using Internet technology), Liquicap is an ideal solution for Inventory Management Solutions.

  • Benefits

    • Use also in safety systems requiring functional safety to SIL2 in accordance with IEC 61508

    • Reliable and universal application thanks to wide range of certificates and approvals

    • No calibration necessary (factory preconfiguration). No calibration...

  • Field of application

    Device is independent of the dielectric constant (dc) as of a liquid conductivity of 100μS/cm and allows measurement of various liquids without the need for recalibration.

    • Process connections: Flanges and threads

    • Process pressure: Vacuum to +100bar (...

Features and specifications

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Details

  • Measuring principle

    Capacitive

  • Characteristic / Application

    Fully insulated rope probe, for standard and extreme process conditions (temperature, pressure)

  • Interface measurement

    Interfaces liquid / liquid also with emulsion layers

  • Specialities

    Inactive length
    Factory calibrated
    short response time by change of value

  • Supply / Communication

    12-36V DC HART
    PFM

  • Accuracy

    repeatablity 0,1%

  • Linearity error for conductive liquids

    <0,25%

  • Ambient temperature

    -50°C...+70°C
    -58°F...+158°F

  • Process temperature

    -80°C...200°C
    -112°F...392°F

  • Process pressure absolute / max. overpressure limit

    Vacuum ... 100 bar
    (Vaccum ... 1450 psi)

  • Main wetted parts

    Insulation material: FEP,PFA
    316L

  • Process connection

    G 3/4, G 1, G1 1/2 /NPT 3/4", NPT 1, NPT1 1/2"
    Flange from DN25.../ASME 1".../JIS...

  • Process connection hygienic

    Tri-Clamp ISO02852 gap free plated

    Dairy coupling

    Flush-mounted seal

  • Sensor length

    Total length: 6m (20ft)
    Inactive length: max. 2m (7ft)

  • Max. measurement distance

    0.42 m ... 10.0 m
    (1.38 ft ... 33 ft)

  • Communication

    4...20mA HART
    PFM

  • Certificates / Approvals

    ATEX, FM, CSA, IEC Ex, TIIS, INMETRO, NEPSI, EAC

  • Safety approvals

    Overfill prevention WHG

    SIL

  • Design approvals

    EN 10204-3.1

    NACE MR0175

  • Hygienic approvals

    EHEDG

  • Marine approval

    GL/ ABS/ DNV

  • Options

    Separate housing
    gas-tight probe seal

  • Application limits

    Changing, non-conductive
    media, conductivity
    < 100 μS/cm


    Notice the pressure and temperature derating

Documents / Manuals / Software

  • Predecessor