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TFS2 Hydrocarbon Composition Analyzer

Brand: Envent Engineering
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The TFS2 is an all optical analytical platform using a tunable filter spectroscopy infrared sensor. The TFS2 offers a multi-component gas analysis at unparalleled speed.

The standard Envent TFS2 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.

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 50% 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

Specifications

Brand

Measurement Range

  • Methane (CH4): 2,000 ppm – 100%
  • Ethane (C2H6) & Propane (C3H8): 2,000 ppm – 25%
  • i-Butane (C4H10), i-Pentane (C5H12) & n-Butane (C4H10) + n-Pentane (C5H12): 1,000 ppm – 10%
  • Carbon Dioxide (CO2): 1% – 50%
  • Hydrogen Sulfide (H2S): 1% – 100%

Accuracy

  • Measurement channels: ± 0.3 mol% or ± 1% of Full Scale or ± 3% of Reading (greater of)

Repeatability

  • < 0.1 mol%

Power

  • 24 VDC; 120/240 VAC, 75 peak 35 watts nominal

Hazardous Area Certification

  • Certified for Class I Division 2, Groups B,C,D

Dimension / Weight

  • TBC

Display

  • Menu is scrolled by internal button or external magnet
  • 128 x 64 Back-lit graphic display with scrolling menu

Outputs

  • Dual isolated 4-20 ma loop powered analog outputs
  • Four (4) additional 5 amp SPDT alarm relays
  • Four (4) solid state solenoid drivers for stream switching
  • Four (4) dry contact inputs
  • Internal archive storage via Envent HMI “ICE” Platform
  • Modbus serial RS-232 and RS-485
  • TCP/IP RJ-45 plug-in port 10/100 mbps

  • Natural Gas Measurements Including Processing, Transmission, Storage and Distribution
  • Power Generation (Turbine, Internal Combustion Engine, Fuel Cell)
  • Calculation of Heating Value (BTU) and Wobbe Index as per GPA 2172
  • LNG / BOG
  • High Range % Level H2S
  • Truck / Ship / Railcar Unloading Terminals
  • Pipeline Blending

Documentation

Brochure

Product Manual

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