Precisive® Hydrocarbon Composition Analyzer
(Natural Gas, LNG, LPG, BOG, BioGas)

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Precisive® 5 Hydrocarbon Composition Analyzer is an infrared absorption based on-line monitoring system configured for measurement of alkanes: methane, ethane, propane, butanes and pentanes. It is a realtime optical analyzer capable of accurately separating the hydrocarbon components; which previously could only be performed by Gas Chromatograph (GC) analyzers.

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Using a unique wavelength-sweeping tunable filter spectrometer, fast update rates down to sub-second intervals are performed for the full C1 through C5 analysis. Sampling is a flow-through type, suitable for a continuous, on-line, unattended operation. This analyzer does not require carrier gas, fuel gases, or on-site calibration gases. The standard system configuration provides measurements of up to 100% methane, 25% of ethane, 25% of propane, 10% of butanes and 5% of pentanes. Other ranges and/or additional gases are available (contact Precisive for specific requirements, compounds and ranges).

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Features & Benefits

  • Fast response for real-time control & optimization
  • C1 - C5 alkane separation, CO2, & calorific value
  • Flow-through analysis without the need for carrier-gas
  • Remote, unattended continuous operation
  • Eliminates carrier gases and other consumables
  • Eliminates calibration gases and fuel gases
  • Virtually zero cross-sensitivity, high sensitivity & linearity


  • Natural gas analysis (processing, transmission, storage, distribution)
  • Heating value & Wobbe measurement
  • Power generation (turbine, IC engine, fuel cell)
  • Alternative fuels (biogas, syngas)
  • LNG/LPG/BOG analysis
  • Alternative to Gas Chromatography


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Precisive Hydrocarbon Composition AnalyzerQuote Only

Need help?

Contact an Application Specialist by sending an email to MKS Instruments or call 978-645-5500.