FDU92 Prosonic Ultrasonic measurement Time-of-Flight

Ultrasonic sensor for level and flow measurement for connection to FMU9x (measuring range up to 20m)

Previous: Prosonic FDU82, FMU801

• Measuring principle

  Ultrasonic

Liquids

• 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, EAC Ex

• Options

  Second 4...20 mA output

• Components

  Transmitter:
  FMU90, FMU95

• Application limits

  For tank farms scanner:
  FMU95

Solids

• 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 ... 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, JPN Ex, INMETRO, NEPSI, EAC Ex

• Options

  Second 4...20mA output

• Components

  Transmitter:
  FMU90

• Product headline

  Version with separate transmitter in field housing or top hat rail housing
  Cost effective solution for open channel flow measurement in water / wastewater plants

• Max. measurement error

  accuracy:
  distance measurement: +/- 2mm + 0.17%

• Measuring range

  max measuring distance up to 20m / 65ft

• Max. process pressure

  atm.

• Medium temperature range

  -40...95°C
  (-40...203°F)

• Degree of protection

  IP68

• Display/Operation

  Transmitter

• Outputs

  Transmitter:
  4...20mA HART
  Option: second 4...20mA output

• Inputs

  Transmitter

• Digital communication

  HART, PROFIBUS DP

• Hazardous area approvals

  ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, EAC Ex

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

Sensor for continuous, non-contact level measurement of fluids and 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 +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

• 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