Precisive® 5-155
Olefins and HRVOC Analyzer

photo - Precisive 5 Analyzer

The Precisive® 5-155 analyzer is a real-time gas composition analyzer based on MKS' unique Tunable Filter Spectroscopy (TFS) platform. Calibrated for multi-component C1 - C5 of alkane and alkene gas streams, this package is an alternative replacement of gas chromatographs, and it offers analysis in seconds and no carrier gas requirement.

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Features & Benefits:

  • Analysis in seconds
    Continuous measurement instead of batch handling
  • Simple to install and maintain
    Low operational costs
    No carrier gas or instrument fuel gas required
  • Linear across measurement range
  • Precision and accuracy
    Accurate and reproducible results in under 5 seconds
  • Flow-through sensor design
    No sensitivity to pressure and flow variations
    Minimized sampling issues
  • Small footprint, outdoor rated
    Extractive process mounted - replace GC installation
    Process control to DCS via real-time Modbus output
    CSA Class1Div2, ATEX Zone 2, IP66 rated
    ATEX Zone 1 option available


  • Furnace cracking process monitoring
  • De-Methanization, De-Ethanization, and De-Butanization process monitoring
  • Ethylene Fractionation, Propylene Fractionation, and Acetylene Conversion process monitoring
  • Storage of Ethane and Ethylene
  • Butadiene processing and SBR (Styrene Butadiene Rubber)
  • HRVOC (Highly Reactive Volatile Organic Compounds) analysis that speciates without the cost, complexity or safety concerns associated with GC/FID analyzers


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Part NumberPriceQTY
Precisive 5-155Quote Only

Documents & Downloads:

Precisive® 5-155 data sheet

Need help?

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