E+H Prosonic FMU40 Ultrasonic Level Transmitter

The Endress+Hauser 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, 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 converting 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


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

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