FDU91 Prosonic Ultrasonic measurement Time-of-Flight

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

Previous: Prosonic FDU80, Prosonic FDU80F, Prosonic FDU81, Prosonic FDU81F, FMU801

• Measuring principle

  Ultrasonic

Continuous / 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

  +/- 2 mm + 0.17% of measured distance

• Ambient temperature

  -40 °C ... 80 °C
  (-40 °F ... 176 °F)

• Process temperature

  -40 °C ... 80 °C
  (-40 °F ... 176 °F)

• Process pressure / max. overpressure limit

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

• Main wetted parts

  PVDF (fully welded IP68 / NEMA6P)

• Process connection

  G / NPT 1"

• Blocking distance

  0.3 m (1 ft)

• Max. measurement distance

  Liquids: 10 m (33 ft),
  Solids: 5 m (16 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

  Foam / high turbulence possible:
  FDU92
  Flange-flush assembly:
  FDU91F
  For tank farms scanner:
  FMU95

Continuous / 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 ... 80 °C
  (-40 °F ... 176 °F)

• Process temperature

  -40 °C ... 80 °C
  (-40 °F ... 176 °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

  0.3 m (1 ft)

• Max. measurement distance

  Liquids: 10 m (33 ft),
  Solids: 5 m (16 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

Liquids

• 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%
  resolution:
  distance measurement: 1mm

• Measuring range

  max measuring distance up to 10m / 32ft

• Max. process pressure

  atm.

• Medium temperature range

  -40...80°C
  (-40...176°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