UNI EN ISO 6974-4 : 2004
Current
The latest, up-to-date edition.
NATURAL GAS - DETERMINATION OF COMPOSITION WITH DEFINED UNCERTAINTY BY GAS CHROMATOGRAPHY - DETERMINATION OF NITROGEN, CARBON DIOXIDE AND C1 TO C5 AND C6+ HYDROCARBONS FOR A LABORATORY AND ON-LINE MEASURING SYSTEM USING TWO COLUMNS
01-03-2004
Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Materials
5 Apparatus
6 Procedure
6.1 Gas chromatographic operating conditions
6.2 Performance requirements - Peak resolution
6.3 Determination - Outline of the analysis
7 Expression of results
7.1 Calculation
7.2 Precision and accuracy
8 Test report
Annex A (informative) Procedure for setting valve timings
and restriction setting
Annex B (informative) Final time
Annex C (informative) Typical precision values
Bibliography
Describes the gas chromatographic method for the quantitative determination of natural gas constituents using a two-column system.
| Committee |
CT 101
|
| DocumentType |
Standard
|
| PublisherName |
Ente Nazionale Italiano di Unificazione (UNI)
|
| Status |
Current
|
| Standards | Relationship |
| UNE-EN ISO 6974-4:2003 | Identical |
| NF EN ISO 6974-4 : 2003 | Identical |
| ISO 6974-4:2000 | Identical |
| NBN EN ISO 6974-4 : 2002 | Identical |
| NEN EN ISO 6974-4 : 2001 | Identical |
| NS EN ISO 6974-4 : 1ED 2001 | Identical |
| I.S. EN ISO 6974-4:2002 | Identical |
| SN EN ISO 6974-4 : 2001 | Identical |
| BS EN ISO 6974-4:2001 | Identical |
| EN ISO 6974-4:2001 | Identical |
| DIN EN ISO 6974-4:2002-06 | Identical |
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