Prosonic FDU9x FDU91

Brand: Endress+Hauser
FDU91
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Prosonic FDU9x FDU91

Brand: Endress+Hauser

Miller Mechanical Specialties, Endress+Hauser's exclusive USA representative in:
● IA ● MN ● Eastern ND ● NE ● SD ● Parts of WI

Extended Extended

Specs at a Glance

Process pressure / max. overpressure limit:
0.7 bar ... 4 bar abs
(10 psi ... 58 psi)
Main wetted parts:
PVDF (fully welded IP68 / NEMA 6P)
Max. measurement distance:
Liquids: 10 m (33 ft),
Solids: 5 m (16 ft)
Process temperature:
-40 °C ... 80 °C
(-40 °F ... 176 °F)
Accuracy:
+/- 2mm + 0.17% of measured distance

Field of application

The FDU91 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 10m (33ft), solids 5m (16ft).

Key Benefits

  • 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
  • Reduced build-up formation because of the self-cleaning effect
  • Integrated automatic sensor detection for transmitters FMU90/FMU95 for simple commissioning

Specifications

Brand

Industry

  • Chemical
  • Water, Wastewater & Waste
  • Food & Beverage
  • Power & Energy
  • Mining, Minerals & Metals
  • Oil & Gas
  • Pulp & Paper (incl. Printing)

Product Family

  • Prosonic

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, UK 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, INMETRO, NEPSI, UK 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%

Measuring range

  • Up to 10m / 32ft

Max. process pressure

  • 0.4 bar...4 bar
  • (10 psi...58 psi)

Medium temperature range

  • -40...80°C
  • (-40...176°F)

Degree of protection

  • IP68

Display/Operation

  • Transmitter FMU90

Outputs

  • Transmitter:
  • 4...20mA HART
  • PROFIBUS DP

Inputs

  • Transmitter FMU90

Digital communication

  • HART, PROFIBUS DP

Hazardous area approvals

  • ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, UK Ex
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