Ultrasonic measurement
Time-of-Flight
Prosonic FDU95

Prosonic FDU95 ©Endress+Hauser

Time-of-Flight measuring principle

  • Prosonic FDU95

Ultrasonic sensor for level measurement for connection to FMU9x (measuring range up to 45m)

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

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  • Fordele

    • 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-...

  • Anvendelsesområde

    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°...

Funktioner og specifikationer

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Details

  • Measuring principle

    Ultrasonic

  • 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
    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 absolute / max. overpressure limit

    0.7 bar...1.5 bar abs

    (10 psi...22 psi)

  • Main wetted parts

    UP (unsaturated polyester)
    Silicon / PE foam (80°C / 176°F)
    Silicon / stainless steal (150°C / 302°F))

  • 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

  • Options

    Second 4...20mA output

  • Components

    Transmitter:
    FMU90

  • 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 absolute / max. overpressure limit

    0.7 bar...1.5 bar abs

    (10 psi...22 psi)

  • Main wetted parts

    UP (unsaturated polyester)

    Silicon / Al PTFE coated

  • 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

  • Options

    Second 4...20 mA output

  • Components

    Transmitter:

    FMU90, FMU95

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