E+H Micropilot FMR57 Radar Level Transmitter

Micropilot FMR57 is the sensor for the highest demands in bulk solids and best suited for measurements in high silos, bunkers or stockpiles. The parabolic antenna facilitates very small emitting angles and thus the measurement in slim silos. Micropilot free space radar is used for continuous, non-contact level measurement in powdery to granular bulk solids. Dust, filling noises, temperature layers and gas layers do not affect the measurement.

  • Hardware and software developed according to IEC 61508 up to SIL3 (in homogeneous redundancy)
  • HistoROM data management concept for fast and easy commissioning, maintenance and diagnostics
  • Highest reliability even in the presence of obstructions in the vessel due to new Multi-Echo Tracking evaluation
  • Heartbeat Technology for a cost-effective and safe plant operation during the entire life cycle
  • Seamless integration into control or asset management systems and intuitive, menu-guided operation concept (on-site or via the control system)
  • Reliable measurement even for changing product and process conditions
  • World’s easiest proof test concept for SIL and WHG saves time and cost

Horn or parabolic antenna. Thanks to the additional air purge connection even strongly dusting and build-up forming media do not present any problem.

  • Process connections: Thread or flange
  • Temperature: -40 to +400°C (–40 to 752°F)
  • Pressure: -1 to +16bar (-14.5 to +232psi)
  • Maximum measuring range: 70m (230ft)
  • K-band: 26GHz
  • International explosion protection certificates, SIL, 5-point linearity protocol
  • Measuring principle

    Level radar solid

  • Characteristic / Application

    For highest demands in measuring tasks of bulk solids:
    Reliable, non-contact level measurement in high silos, bunkers or stockpiles also under extreme conditions like strongly dusting and build-up forming media

  • Specialities

    Heartbeat Technology,

    Bluetooth® commissioning,

    Operation and maintenance SmartBlue App,

    Safety and reliability with Multi- Echo Tracking,


    RFID TAG for easy identification

  • Supply / Communication

    2-wire (HART / PROFIBUS PA/ FOUNDATION Fieldbus)

    4-wire (HART),

    Bluetooth® wireless technology and App (optional)

  • Frequency

    K-band (~26 GHz)

  • Antenna

    Parabolic DN200/8″, DN250/10″

    Horn DN80/3″, DN100/4″

  • Accuracy

    +/- 3 mm (0.12 in)

  • Ambient temperature

    -40…+80 °C

    (-40…+176 °F)

  • Process temperature

    -40…+400 °C

    (-40…+752 °F)

  • Process pressure absolute / max. overpressure limit

    Vacuum…16 bar 

    (Vacuum…232 psi)

  • Main wetted parts

    316L, PEEK, PTFE, Polyamid

  • Process connection


    MNPT 1 1/2, R 1 1/2



    ASME 3″…4″,

    JIS 10K,

    UNI DN100/8″…DN250/10″

  • Max. measurement distance

    70 m (230 ft)

  • Communication

    4…20 mA HART 


    FOUNDATION Fieldbus

    Bluetooth® wireless technology

  • Certificates / Approvals


  • Safety approvals


  • Design approvals

    EN 10204-3.1

  • Marine approval

    GL/ ABS/ LR/ BV/ DNV

  • Options


    Customized parameterization,

    Remote operation via SmartBlue App using Bluetooth®,

    Antenna extension,

    PWIS free

  • Application limits

    Dk < 1.6

    Reduction of the max. possible measuring range through:

    Media with poor reflection properties

    Angle of repose

    Extremely loose surfaces of bulk solids, e.g. bulk solids with low bulk weight for pneumatic filling

    Build-up, above all of moist products

Datasheet: Micropilot FMR56, FMR57 Technical Information

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