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Last Updates: 15/02/2021

Endress+Hauser Prosonic FMU30 Ultrasonic measurement Time-of-Flight

The range of applications extends from monitoring levels in sewage treatment plants and process water tanks to applications for loading, storage and buffer tanks. FMU30 ultrasonic sensor offers proven software algorithms and all warning and alarm messages are shown on the four-line plain text display and guarantee fast remedy of problems. The envelope curve can also be shown on the display. As the analysis results are displayed directly on-site, this ensures quick and accurate error diagnostics.

  • Quick and simple commissioning via menu-guided onsite operation with four-line plain text display, 7 languages selectable
  • Envelope curves 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
  • Non-contact measurement method minimizes service requirements
  • Installation possible from thread G 1½ or 1½ NPT upwards
  • Integrated temperature sensor for automatic correction of the temperature dependent sound velocity

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

  • Process connection: Thread
  • Temperature: -20 to +60°C (-4 to +140°F)
  • Pressure: +0.7 to +3bar (+10 to +44psi)
  • Maximum measuring distance: 
    Sensor 1½” for liquids 5m (16ft) and for bulk solids 2m (6.6ft), 
    Sensor 2″ for liquids 8m (26ft)and for bulk solids 3.5m (11ft)
  • Blocking distance: 
    Sensor 1½” 0.25m (0.8ft), 
    Sensor 2″ 0.35m (1.15ft)
  • International explosion protection certificates
  • Measuring principle

    Ultrasonic

  • Characteristic / Application

    Compact ultrasonic transmitter

  • Supply / Communication

    2-wire

  • Accuracy

    +/- 3 mm or +/- 0,2 % of set measuring range

  • Ambient temperature

    -20 °C … 60 °C 

    (-4 °F … 140 °F)

  • Process temperature

    -20 °C … 60 °C 

    (- 4°F … 140 °F)

  • Process pressure absolute / max. overpressure limit

    0.7 bar … 3 bar abs

    (10 psi … 44 psi)

  • Main wetted parts

    PP/EPDM

  • Process connection

    G / NPT 1 1/2″ 

    G / NPT 2″

  • Blocking distance

    1 1/2″: 0.25 m (0.8 ft)

    2″:0.35 m (1.15 ft)

  • Application
     
  • Max. measurement distance

    Sensor 1-1/5″: 5m (16 ft)

    Sensor 2″ : 8m (26ft)

  • Communication

    4…20 mA

  • Certificates / Approvals

    ATEX, CSA C/US, IEC Ex, NEPSI

  • Options

    Accessory Enclosed:

    UNI flange 2″ … 4″

  • Application limits

    For higher resistance:

    FMU41/42/FDU9x

    Foam / high turbulence possible:

    FMU42/FDU91

    Fast filling and discharging rate:

    FMU90 + FDU9x

    Level limit detection:

    FMU90 + FDU9x

Datasheet: Ultrasonic Level Measurement

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