BS EN ISO 6974-4:2001
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
Hardcopy , PDF
English
07-15-2001
Important note : All end users must be registered with an Account prior to user licenses being assigned.
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 |
PTI/15
|
| DevelopmentNote |
Renumbers and supersedes BS ISO 6974-4 (08/2002) 2001 Version incorporates amendment 13838 to BS ISO 6974-4. Supersedes BS 3156-11.1.1(1986) and 95/123188 DC. (11/2005)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| UNE-EN ISO 6974-4:2003 | Identical |
| NBN EN ISO 6974-4 : 2002 | Identical |
| NEN EN ISO 6974-4 : 2001 | Identical |
| UNI EN ISO 6974-4 : 2004 | Identical |
| I.S. EN ISO 6974-4:2002 | Identical |
| SN EN ISO 6974-4 : 2001 | Identical |
| ISO 6974-4:2000 | Identical |
| EN ISO 6974-4:2001 | Identical |
| NF EN ISO 6974-4 : 2003 | Identical |
| NS EN ISO 6974-4 : 1ED 2001 | Identical |
| DIN EN ISO 6974-4:2002-06 | Identical |
| ISO 6976:2016 | Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition |
| ISO 6974-2:2012 | Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 2: Uncertainty calculations |
| ISO 10723:2012 | Natural gas — Performance evaluation for analytical systems |
| ISO 6143:2001 | Gas analysis — Comparison methods for determining and checking the composition of calibration gas mixtures |
| ISO 6142:2001 | Gas analysis Preparation of calibration gas mixtures Gravimetric method |
| ISO 6974-1:2012 | Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition |
| ISO 7504:2015 | Gas analysis Vocabulary |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.