Ultrasonic Measurement Time-of-Flight Prosonic FDU95

Brand: Endress+Hauser

Ultrasonic Measurement Time-of-Flight Prosonic FDU95

Brand: Endress+Hauser
Extended Extended

The FDU95 ultrasonic sensor is 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 buildup due to the self-cleaning effect of sensors. Suited for explosion-hazardous areas. Maximum measuring range in solids is 45m (148ft).

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
Features
  • 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

Specifications

Measuring Principle

  • Ultrasonic

Characteristic / Application

  • Separated version with field housing or top hat rail housing for control cabinet instrumentation, 300 m in-between sensor and transmitter

Supply / Communication

  • 4-wire (HART, PROFIBUS DP)

Accuracy

  • +/- 2 mm + 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 / Max. Overpressure Limit

  • 0.7 bar...1.5 bar abs
  • (10 psi...22 psi)

Main Wetted Parts

  • UP (unsaturated polyester)

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,UK Ex

Options

  • Second 4...20 mA output

Components

  • FMU90
  • FMU95
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