DIN EN ISO 6975:2005
Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); English version of DIN EN ISO 6975

Standard No.

DIN EN ISO 6975:2005

Release Date

2005

Published By

German Institute for Standardization

Status

Be replaced

Replace By

DIN EN ISO 6975:2005-09

Latest

DIN EN ISO 6975 Berichtigung 1:2008-09

Scope

This International Standard describes the specifications for the quantitative analysis of the following components of natural gas: helium hydrogen argon oxygen nitrogen carbon dioxide saturated hydrocarbons from C~ to Cs hydrocarbon fractions from C6 upwards aromatic compounds as benzene and toluene The gas-chromatographic methods determine the components in the following ranges: oxygen: 0.001% (n/n) to 0.5 % (n/n) helium: 0.001% (n/n) to 0.5 % (n/n) hydrogen: 0.001% (n/n) to 0.5 % (n/n) argon: 0.001% (n/n) to 0.5 % (n/n) nitrogen: 0.001% (n/n) to 40 % (n/n) carbon dioxide: 0.001% (n/n) to 40 % (n/n) methane: 50 % (n/n) to 100 % (n/n) ethane: 0.02 % (n/n) to 15 % (n/n) propane: 0.001% (n/n) to 5 % (n/n) higher hydrocarbons: The method can measure hydrocarbon components from 10.6 (n/n) up to their maximum concentration, which is compatible with the requirement that the gas is free from hydrocarbon condensate at any pressure in the range 1 x 102 kPa to 7 x 103 kPa.

DIN EN ISO 6975:2005 Referenced Document

• ISO 10715:1997 Natural gas - Sampling guidelines
• ISO 14111:1997 Natural gas - Guidelines for traceability in analysis
• ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results - Part 1: General principles and definitions
• ISO 6142:1981 Gas analysis; Preparation of calibration gas mixtures; Weighing methods
• ISO 6143:1981 Gas analysis; Determination of composition of calibration gas mixtures; Comparison methods
• ISO 6326-1:1989 Natural gas; determination of sulfur compounds; part 1: general introduction
• ISO 6326-2:1981 Gas analysis; Determination of sulphur compounds in natural gas; Part 2 : Gas chromatographic method using an electrochemical detector for the determination of odoriferous sulphur compounds
• ISO 6326-3:1989 Natural gas; determination of sulfur compounds; part 3: determination of hydrogen sulfide, mercaptan sulfur and carbonyl sulfide sulfur by potentiometry
• ISO 6326-4:1994 Natural gas; determination of sulfur compounds; part 4: gas chromatographic method using a flame photometric detector for the determination of hydrogen sulfide, carbonyl sulfide and sulfur-containing odorants
• ISO 6326-5:1989 Natural gas; determination of sulfur compounds; part 5: Lingener combustion method
• ISO 6570-1:1983 Natural gas; Determination of potential hydrocarbon liquid content; Part 1 : Principles and general requirements
• ISO 6974-1 Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 1: General guidelines and calculation of composition; Technical Corrigendum 1*， 2012-11-01 Update
• ISO 6974-2 Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 2: Uncertainty calculations*， 2012-05-01 Update
• ISO 6974-3 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 3: Precision and bias*， 2018-09-30 Update
• ISO 6974-4 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen, carbon dioxyde and C<(Index)1> to C<(Index)5> and C<(Index)6+> hydrocarbons for a laboratory and on-line measuring system using
• ISO 6974-5 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*， 2014-07-01 Update

DIN EN ISO 6975:2005 history

• 2008 DIN EN ISO 6975 Berichtigung 1:2008-09 Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); German version EN ISO 6975:2005, Corrigendum to DIN EN ISO 6975:2005-09
• 2008 DIN EN ISO 6975 Berichtigung 1:2008 Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); German version EN ISO 6975:2005, Corrigendum to DIN EN ISO 6975:2005-09
• 2005 DIN EN ISO 6975:2005-09 Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); German version EN ISO 6975:2005
• 2005 DIN EN ISO 6975:2005 Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); English version of DIN EN ISO 6975