BS EN ISO 14912:2006
Current
The latest, up-to-date edition.
Gas analysis. Conversion of gas mixture composition data
Hardcopy , PDF
English
31-07-2009
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Introduction
1 Scope
2 Terms and definitions
3 Symbols and units
4 Basic principles
4.1 Expression of gas mixture composition
4.2 Conversion between different quantities
4.3 Conversion between different state conditions
5 Main procedures
5.1 Conversion between different quantities of composition
5.2 Conversion to reference conditions
6 Practical implementation
6.1 Conversion between quantities of composition
6.2 Conversion of single analyte contents
6.3 Conversion of complete compositions
6.4 Conversion between state conditions
6.5 Simple approximations applicable to conversion
7 Input quantities and their uncertainties
7.1 Pure gas data
7.2 Gas mixture data
7.3 Rough uncertainty estimates
8 Conversion uncertainty
8.1 General considerations
8.2 Conversion of single analyte contents
8.3 Conversion of complete compositions
8.4 Uncertainty calculation using numerical differentiation
8.5 Variances and covariances of input composition data
9 Application recommendations
Annex A (normative) - Assessment of state conditions
Annex B (normative) - Summation relations for the expression
of mixture properties
Annex C (informative) - Mixture component data
Annex D (informative) - Examples
Annex E (informative) - Computer implementation of recommended
methods
Bibliography
Describes the following quantities commonly used to express the composition of gas mixtures: - mole fraction, - mass fraction, - volume fraction, and - mole concentration, - mass concentration, - volume concentration.
| Committee |
PTI/15
|
| DevelopmentNote |
Renumbers and supersedes BS ISO 14912. 2006 version incorporates corrigendum to BS ISO 14912. Supersedes 01/123669 DC. (07/2009)
|
| DocumentType |
Standard
|
| Pages |
64
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| ISO 14912:2003 | Identical |
| ISO 6976:2016 | Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition |
| ISO/IEC Guide 98:1993 | Guide to the expression of uncertainty in measurement (GUM) |
| ISO 12213-3:2006 | Natural gas Calculation of compression factor Part 3: Calculation using physical properties |
| DIN 51896-2:1994-09 | GAS ANALYSIS; QUANTITIES OF COMPOSITION, COMPRESSIBILITY FACTOR - PART 2: APPLICATION |
| DIN 1871:1999-05 | Gaseous fuels and other gases - Density and other volumetric quantities |
| ISO/IEC Guide 99:2007 | International vocabulary of metrology Basic and general concepts and associated terms (VIM) |
| ISO 12213-1:2006 | Natural gas Calculation of compression factor Part 1: Introduction and guidelines |
| ISO 7504:2015 | Gas analysis Vocabulary |
| DIN 51896-1:1991-10 | GAS ANALYSIS; QUANTITIES OF COMPOSITIONS, COMPRESSIBILITY FACTOR, BASIS |
| ISO 12213-2:2006 | Natural gas Calculation of compression factor Part 2: Calculation using molar-composition analysis |
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