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Ultrasonic measurement
Prosonic FMU30

Cost effective all-round instrument for level applications in liquids and bulk solids

  • Prosonic FMU30 ©Endress+Hauser
  • Prosonic FMU30 ©Endress+Hauser
  • Prosonic FMU30 wastewater application ©Endress+Hauser
  • Time-of-Flight measuring principle

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

Field of application

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

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Predecessor: Prosonic T FMU230A, Prosonic T FMU230E, Prosonic T FMU231A, Prosonic T FMU231E


Endress+Hauser Oy
Robert Huberin tie 3 B 01510 Vantaa Finland
Tel.: +358 20 1103 600

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