Endress Hauser AG

- Model FDU95 - Ultrasonic Sensor for Level Measurement for Connection

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Ultrasonic sensor for level measurement for connection to FMU9x (measuring range up to 45m). The FDU95 ultrasonic sensor for continuous, non-contact and maintenance-free level measurement of powdery to coarse bulk materials. 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 solids 45m (148ft).

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

  • 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)

  • Non-contact measurement method minimizes service requirements

  • International Dust-Ex and Gas-Ex certificates available

Sensor for continuous, non-contact level measurement of bulk materials in silos, on belts, stockpiles and in crushers. Typically used in measurements in low structural heights.

  • Process connection: Thread

  • Temperature: -40 to +80°C or +150°C (-40 to +176°F or +302°F)

  • Pressure: +0.7 to +1.5bar (+10 to +22psi)

  • Maximum measuring range: Solids 45m (148ft)

  • Blocking distance: 0.7m / 80°C (2.3ft), 0.9m / 150°C (2.9ft)

  • International explosion protection certificates

  • Measuring Principle: Ultrasonic
  • Characteristic / Application: Separated version with field housing or top hat rail housing for control cabinet instrumentation, 300m in-between sensor and transmitter
  • Supply / Communication: 4-wire (HART , Profibus DP)
  • Accuracy: +/- 2mm + 0.17% of measured distance
  • Ambient temperature: -40 °C ... 80 °C or 150 °C (-40 °F ... 176 °F or 302 °F)
  • Process temperature: -40 °C ... 80 °C or 150 °C (-40 °F ... 176 °F or 302 °F)
  • Process pressure absolute / max. overpressure limit:
    • 0.7 bar ... 1.5 bar abs
    • (10 psi ... 22 psi)
  • Main wetted parts:
    • UP (unsaturated polyester)
    • Silicon / PE foam (80°C / 176°F)
    • Silicon / stainless steal (150°C / 302°F))
  • Process connection: G / NPT 1'
  • Blocking distance:
    • 0.7 m / 80 °C
    • (2.3 ft / 176 °F)
    • 0.9 m / 150 °C
    • (2.9 ft / 302 °F)
  • Max. measurement distance: 45 m (148 ft)
  • Communication:
    • Transmitter: 4 ... 20 mA HART Profibus DP
  • Certificates / Approvals: ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI
  • Options: Second 4...20mA output
  • Components: Transmitter: FMU90

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