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GAS ANALYSIS - CONVERSION OF GAS MIXTURE COMPOSITION DATA (ISO 14912:2003/Cor 1:2006)
Amendment of: EN ISO 14912:2006
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Published date: 27-11-2007
Publisher: Comite Europeen de Normalisation
Introduction1 Scope2 Terms and definitions3 Symbols and units4 Basic principles 4.1 Expression of gas mixture composition 4.2 Conversion between different quantities 4.3 Conversion between different state conditions5 Main procedures 5.1 Conversion between different quantities of composition 5.2 Conversion to reference conditions6 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 conversion7 Input quantities and their uncertainties 7.1 Pure gas data 7.2 Gas mixture data 7.3 Rough uncertainty estimates8 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 data9 Application recommendationsAnnex A (normative) Assessment of state conditionsAnnex B (normative) Summation relations for the expression of mixture propertiesAnnex C (informative) Mixture component dataAnnex D (informative) ExamplesAnnex E (informative) Computer implementation of recommended methodsBibliography
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.
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