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Extended Natural Gas and Fixed Gas Analysis

Analyzer Description

Configuration:

4-valves, 5-column (packed and capillary), TCD / FID

Sample type:

Natural gas, other refinery gases

Components separated:

TCD:

  • isobutane
  • n-butane
  • isopentane
  • n-pentane
  • carbon dioxide
  • ethane
  • hydrogen sulfide
  • n-propane
  • argon/oxygen composite
  • nitrogen
  • methane
  • carbon dioxide

FID:

  • C4 through C12 n-paraffins
  • benzene
  • toluene
  • ethyl benzene
  • xylenes

Lower detection limits:

TCD: 100 ppm for all components and 200 ppm for carbon monoxide

FID: 1 ppm for all components

Methods met:

  • ASTM D1945
  • GPA 2186
  • GPA 2286
  • Wasson-ECE 326

Typical Chromatogram

ASTM D1945 ChromatogramFID Chromatogram

Key Features and Benefits

  • Can use liquid and/or gas sampling valves
  • If liquid valves are used, the air peak is a composite peak
  • BTU calculation software available
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