I.S. EN ISO 14912:2007
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
01-01-2007
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Foreword
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
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