Fiber Optic Assemblies

Conax

Fiber Optic Assemblies for

Industrial and Aircraft Applications
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Fiber Optic Assemblies for Industrial and Aircraft Applications
Characteristics:
  • Input power: 115-230 VAC, 47-63 Hz
  • Available output signal: 4-20 mA, 0-5 Vdc, RS485, etc.
  • Sensing range: +350ºC to +1300ºC
  • System accuracy: ± 3% over the range of +350ºC to +700ºC±1% over the range of +700ºC to +1300ºC
  • System response time: <1 sec.
  • Environmental temperature: 0ºC to +50ºC (electro-optic unit and digital signal processor)
  • Probe vibration: 20g random vibration on mutually perpendicular axes
  • Probe Tip: Sapphire sensor protection is provided
    by a silicon carbide sheath housed in a
    superalloy well. Material selection and
    housing design have provided reliable
    performance at turbine inlet locations.
  • Probe shaft: The flexible design of the shaft
    accommodates the thermal expansion
    normally encountered during turbine
    operation between the hot gas path
    and the turbine housing.
  • Mounting configurations: are
    designed to fit virtually any
    turbine system interface. Sensor
    probe lengths can be varied to
    accommodate turbine frames.
  • Termination: The rugged termination
    head is designed for the
    power plant environment.
  • The optical path: is integrated
    with the electro-optical unit,
    forming a closed loop system.
  • Fiber Optic Cable: Double-linked
    superflex stainless
    steel armor cable for
    optical cable
    protection.
  • The electro-optic unit (EOU): Separates the
    optical signal into two separate wavelength
    bands,amplifies the signals and converts to
    digital values.The EOU is permanently
    attached to each probe and stores
    information specific to that probe’s operation.
    This calibration information is downloaded to
    the signal processor when a new probe is
    installed, limiting reprogramming.
  • Digital Signal Processor: Digital signals from the
    electro-optic unit are
    transferred to the Digital
    Signal Processor via an
    RS-485 interface.The output
    signal is based on the signal
    levels and calibration
    information the digital signal
    processor receives from the
    electro-optic unit.The digital
    signal processor module can
    be configured for a variety of
    output signal schemes.
Product Description:
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Conax Buffalo Technologies’ Fiber Optic Temperature System
revolutionizes temperature measurement in gas turbine
engines.Conax’s new optical sensor system operates directly in the
turbine inlet, withstanding temperatures and gas flow rates far beyond
the capability of conventional sensor technology. This provides
considerable improvement over traditional thermocouple technology that measures
exhaust gas temperature.Efficiency and power output improvements in gas turbine
systems have produced increases in turbine inlet temperatures to well over 1000oC for
base load operation. At such elevated temperatures and in gas flow velocities, Conax’s
patented technology has been proven superior for the measurement of turbine inlet
and inter-turbine temperatures. As power generation facilities seek more
efficient methods of operation, Conax fiber optic systems play a key role
in the control solution for advanced gas turbine.

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Sensing Element and Probe Housing

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The Conax Buffalo Technologies Fiber Optic Temperature sensor technology is based on thermal radiation. An optically emissive material is inserted into the flow path where it is heated by the gas stream and produces thermal radiation. This optical energy is transmitted down a sapphire light guide which is supported in a probe housing.

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Fiber Optic Cable

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A flexible optical fiber within the cable transmits the thermal radiation from the probe to the signal processor. The rugged construction is derived from cable assemblies designed for the harsh military aircraft engine environment, allowing the cable to survive the temperature and vibration associated with the turbine engine case environment.

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Opto-Electronic Signal Processor

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Optical radiation produced by the probe is detected by the signal processor and converted to a digital value corresponding to the probe tip temperature.

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Downloads:pdf_pic Downloads:General Specifications
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