The Endress+Hauser Group

Media center

Events

Your career with Endress+Hauser

Product tools

Contact Information

E-direct Shop

E-direct complements our traditional offering by providing you with a quick, effective way to purchase easy-to-configure, entry-level instrumentation.

E-direct Shop

Ultrasonic measurement
Time-of-Flight
Prosonic FDU91

Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range
up to 10m)

  • Prosonic FDU91 ©Endress+Hauser
  • Prosonic FDU91 ©Endress+Hauser
  • Time-of-Flight measuring principle

The FDU91 ultrasonic sensor for continuous, non-contact and maintenance-free level measurement of fluids, pastes, sludges and powdery to coarse bulk materials. But also for flow measurement in open channels and measuring weirs. The measurement is unaffected by dielectric constant, density or humidity and also unaffected by build-up due to the self-cleaning effect of sensors. Suited for explosion hazardous areas. Maximum measuring range in liquids 10m (33ft), solids 5m (16ft).

Benefits

  • Integrated temperature sensor for Time-of-Flight correction. Accurate measurements are possible, even if temperature changes are present

  • Hermetically welded PVDF sensor for highest chemical resistance

  • Suited for rough ambient conditions thanks to separate installation from the transmitter
    (up to 300m)

  • Reduced build-up formation because of the self-cleaning effect

  • Integrated automatic sensor detection for transmitters FMU90/FMU95 for simple commissioning

  • Weather resistant and flood-proof (IP 68)

  • Integrated heating against a build-up of ice at the sensor (optional) ensures reliable measurement

Field of application

Sensor for continuous, non-contact level measurement of fluids and of bulk materials in silos, on belts, stockpiles and in crushers. Also for flow measurement in open channels and at weirs. Typically used in measurements in low structural heights.

  • Process connection: Thread

  • Temperature: -40 to +80°C (-40 to +176°F)

  • Pressure: +0.7 to +4bar (+10 to +58psi)

  • Maximum measuring range: Liquids 10m (33ft), solids 5m (16ft)

  • Blocking distance: 0.3m (1ft)

  • International explosion protection certificates

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Contact

Endress+Hauser (Schweiz) AG
Kägenstrasse 2 4153 Reinach Switzerland
Tel.: +41 61 715 7575
Fax: +41 61 715 2775
Send email www.ch.endress.com

Related news

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Find out more here close