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NEN EN ISO 6974-5 : 2014

Current

Current

The latest, up-to-date edition.

NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 5: ISOTHERMAL METHOD FOR NITROGEN, CARBON DIOXIDE, C1 TO C5 HYDROCARBONS AND C6+ HYDROCARBONS

Published date

12-01-2013

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Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Materials
5 Apparatus
6 Procedure
  6.1 Gas chromatographic operating conditions
  6.2 Calibration
  6.3 Performance requirements
      6.3.1 Peak resolution
      6.3.2 Chromatogram
  6.4 Determination
      6.4.1 Sample valve purge
      6.4.2 Analysis
7 Expression of results
  7.1 Precision and accuracy
8 Test report
Annex A (informative) Procedure for setting valve timings
and restrictor setting
Annex B (informative) Typical precision values
Bibliography

Explains a gas chromatographic method for the quantitative determination of the content of nitrogen, carbon dioxide and C1 to C5 hydrocarbons individually and a composite C6+ measurement, which represents all hydrocarbons of carbon number 6 and above in natural gas samples.

DevelopmentNote
Supersedes NEN ISO 6974-5. (03/2003)
DocumentType
Standard
PublisherName
Netherlands Standards
Status
Current
Supersedes

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