Last Updates: 16/08/2020

E&H Prosonic FMU40 Ultrasonic measurement Time-of-Flight

Part Number: FMU40 Categories: ,
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  • The Prosonic FMU40 sensor is suited for non-contact level measurement in fluids, pastes, coarse bulk material and flow measurement in open channels or at weirs. The two-wire or four-wire compact transmitter can be used in applications with storage tanks, agitators, on stockpiles and conveyor belts. The envelope curve can be shown on the on-site display for simple diagnosis. Linearization function (up to 32 points) for conversion of the measured value into any unit of length, volume or flow rate.

    • Reliable non-contact measurement
    • Quick and simple commissioning via menu-guided on-site operation with four-line plain text display, 7 languages selectable
    • Envelope curves on the on-site display for simple diagnosis
    • Hermetically sealed and potted sensor
    • Chemically resistant sensor out of PVDF
    • Calibration without filling or discharging
    • Integrated temperature sensor for automatic correction of the temperature dependent sound velocity

    Two-wire or four-wire instrument for continuous non-contact level and flow measurement.

    • Process connection: Thread
    • Temperature: -40 to +80°C (-40 to +176°F)
    • Pressure: +0.7 to +3bar (+10 to +44psi)
    • Maximum measuring distance: Liquids 5m (16ft), Solids 2m (16ft)
    • Blocking distance: Liquids and Solids 0.25m (0.8ft)
    • International explosion protection certificates
    • Measuring principle


    • Product headline

      Compact ultrasonic measuring instrument
      Cost effective solution for open channel

    • Max. measurement error

      Low accuracy

    • Measuring range

      0,25…5m [0.8…16ft]

    • Max. process pressure


    • Medium temperature range

      -40°C … 80°C

    • Degree of protection


    • Outputs


    • Inputs

      2-wire 16-36V DC,
      4-wire 16-36V DC,
      90-253V AC 50/60Hz

    • Digital communication


    • Hazardous area approvals

      ATEX, FM, CSA

    Datasheet: Prosonic M FMU40,41,42,43,44 Technical Information

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