Ultrasonic Measurement Time-of-Flight Prosonic FDU92

Brand: Endress+Hauser
Ultrasonic measurement Time-of-Flight Prosonic FDU92
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Ultrasonic Measurement Time-of-Flight Prosonic FDU92

Brand: Endress+Hauser
Extended Extended

The FDU92 ultrasonic sensor is 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 is 20m (65ft), solids is 10m (33ft).

  • Process connection: Thread
  • Temperature: -40 to +95°C (-40 to +203°F)
  • Pressure: +0.7 to +4bar (+10 to +58psi)
  • Maximum measuring range: Liquids 20m (65ft), solids 10m (33ft)
  • Blocking distance: 0.4m (1.3ft)
  • International explosion protection certificates
Features
  • 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)
  • International Dust-Ex and Gas-Ex certificates available

Specifications

Brand

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

  • +/- 2mm + 0.17% of measured distance

Ambient Temperature

  • -40 °C ... 95 °C
  • (-40 °F ... 203 °F)

Process Temperature

  • -40 °C ... 95 °C
  • (-40 °F ... 203 °F)

Process Pressure / Max. Overpressure Limit

  • 0.7 bar ... 4 bar abs
  • (10 psi ... 58 psi)

Main Wetted Parts

  • PVDF (fully welded IP68 / NEMA 6P)

Process Connection

  • G / NPT 1"

Blocking Distance

  • 0.4 m (1.3 ft)

Max. Measurement Distance

  • Liquids: 20 m (65 ft)
  • Solids: 10 m (33 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 - Transmitter

  • FMU90, FMU95

Application limits

  • For tank farms scanner: FMU95
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