Hydrocarbon Composition Analyzer

Certified for II 2 G Ex db IIB+H2 T3 Gb 0°C ≤ Ta ≤ 50°C.

The TFS1-Ex is an all optical analytical platform using a tunable filter spectroscopy infrared sensor. The TFS1-Ex offers a multi-component gas analysis at unparalleled speed. The standard Envent TFS1-Ex measures methane, ethane, propane, iso-butane, iso-pentane and a combined measurement for (n-butane, n-pentane and n-hexane), as well as % level CO2 and H2S. Certified for II 2 G Ex db IIB+H2 T3 Gb 0°C ≤ Ta ≤ 50°C.

The spectrometer utilizes a tunable Fabry-Perot assembly that provides wavelength scanning along with advanced spectral processing that can produce response times as fast as 1 to 10 seconds. Additional measurement options are available depending on the application. This includes component analysis for the HPI market such as ethylene, propylenes, and butenes (Canada, Mexico and Middle East). Sampling is with a flowthrough cell, suitable for continuous, online, unattended operation. The analyzer does not require carrier gas, fuel gas or on-site calibration gas. The standard Envent system configuration provides measurements of up to 100% methane, 25% ethane, 25% propane, 10% butanes and 10% pentanes, 100% H2S and 100% CO2. Diatomic compounds such as nitrogen, oxygen and hydrogen are not measured directly and are combined and reported as one group of unmeasured inert gases.

  • Features
    • Response times as fast as 1 to 10 seconds typical depending on application and accuracy desired.
    • No carrier gas or instrument air required.
    • First principle measurement.
    • BTU, Wobbe Index and density outputs.
    • Linear response throughout the measurement ranges.
    • Sample cell pressure and temperature compensated.
    • Remote & completely unattended operation.
    • Additional measurement recipes available.
    • Data logging.
    • Stream Switching.
  • Downloads
  • Certification
  • Applications
    • Natural Gas measurements including processing, transmission, storage and distribution
    • BTU and Wobbe Index analysis
    • Power Generation (turbine, internal combustion engine, fuel cell).
    • Acid gas
    • Gas Plant Inlet
    • Loading Terminals
    • Portable/Temporary Analysis
    • Fuel Gas Monitoring
    • Pipeline blending
    • Flare Gas Monitoring
  • Specifications
    Measurement Ranges Methane (CH4): 2000ppm – 100%
    Ethane (C2H6): 2000ppm – 25%
    Propane (C3H8): 2000ppm – 25%
    i-Butane (C4H10): 1000ppm – 10%
    n-Butane (C4H10) + n-Pentane (C5H12): 1000ppm – 10%
    i-Pentane (C5H12): 1000ppm – 10%
    Carbon Dioxide (CO2): 1% – 100% Hydrogen Sulfide (H2S): 1% – 100%
    Component Channels 8 components (consult factory for additional components)

    Methane (80-100%): ± 0.2%, Methane (0 – 80%): ±0.5%
    Other Hydrocarbons: ± 0.2%

    H2S ± 0.2% or 1% of reading, whichever is greater.
    CO2: +/- 0.2%

    Repeatability 0.01% / 0.05% (repeatability based upon 5-second averaging)
    Zero Drift Less than ±0.2% (absolute) per week (zero on air or N2)
    Calibration Permanent Factory Span Calibration (note: user component correction factors can be written to system). Zero gas recommended upon start-up and every 1-2 months.
    Update time 1 second – 10 seconds typical, software configurable (longer averaging time improves precision)
    Sampling Technique: Flow through cell (100 ml internal volume)
    Flow Rate: 0.1 – 2 LPM (typical)
    Pressure: 0 – 2 psig (standard) consult factory for higher pressures.
    Sample Temp: 0 – 50°C note cell is maintained at 60°C.
    Connections: ¼” Swagelok
    Power 24 VDC (Optional 120/240 VAC, 75 peak 35 watts nominal)
    Display 128 x 64 Graphic Display; Menu is scrolled by internal button or external magnet.
    Outputs 128 x 64 Back-lit graphical display with scrolling menu
    Dual isolated 4-20 ma loop powered analog outputs
    4 additional 5 amp SPDT alarm relays
    4 solid state solenoid drivers for stream switching
    4 dry contact inputs
    Internal archive storage via Envent HMI “ICE” Platform
    Modbus serial RS-232 and RS-485
    Modbus TCP via ethernet
    Hazardous Area Certification CSAus
    Certified for Class I Division 1, Groups B,C,D
    Dimensions 61.0 x 45.7 x 30.5 cm – 61kg (approx)
    24″ x 16″ x 12″ – 135 lbs (approx)

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The TFS1-Ex offers a multi-component gas analysis at unparalleled speed and is explosion proof.