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Radar measurement - Micropilot FMR250

Micropilot M FMR250

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Measuring / Application task

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  • Characteristic / Application

    Non-contact level measurement especially in powdery to granular bulk solids. Level measurement in tall silos with extremely dusty bulk solids e.g. cement, raw meal or animal feed. Applications with highly abrasive bulk solids e.g. ferrite / clinker

  • Specialities

    Air purge connection

  • Supply / Communication

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

  • Frequency

    K-Band (~ 26 GHz )

  • Antenna

    Parabolic DN200/8", DN250/10"
    Horn DN80/3", DN100/4"

  • Accuracy

    +/- 15mm (or 0.04% of range, whatever is larger)

  • Ambient temperature

    -40 °C...+80 °C
    (-40 °F...+176 °F)

  • Process temperature

    -40 °C...+200 °C
    (-40 °F...+392 °F)

  • Process pressure / max. overpressure limit


  • Main wetted parts

    PEEK, 1.4435, 1.4404, 316L

  • Process connection

    R1 1/2", NPT1 1/2
    DN80, DN 100
    ASME 3", 4"
    JIS 80A, 100A
    UNI DN100/4"...DN250/10"

  • Blocking distance

    Antenna length + 400mm (15.75")

  • Max. measurement distance

    70 m (230 ft)

  • Communication

    4...20 mA HART
    FOUNDATION Fieldbus

  • Certificates / Approvals


  • Options

    Separate display
    Antenna extension 250 mm/ 10" or 450 mm/18"
    Top Target Positioner (+/-15°)

  • 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