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DD ISO/TS 29041:2008

Current
Current

The latest, up-to-date edition.

Gas mixtures. Gravimetric preparation. Mastering correlations in composition
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

02-28-2009

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Symbols and abbreviated terms
4 Mixture preparation by gravimetry
5 Unit conversion
6 Inclusion of purity data
7 Gas property calculations
8 Summary and recommendations
Annex A (normative) - Generic approach to uncertainty
        calculation
Bibliography

Describes gravimetric mixture preparation as given in ISO 6142 is investigated for existing a priori influences, as well as correlations introduced by data processing.

In this Technical Specification, the gravimetric mixture preparation as given in ISO6142 is investigated for influences of a priori existing, as well as correlations introduced by data processing.

All calculations refer to an example which consists in the preparation of a synthetic natural gas of a target composition as follows: 1,4mol%N2, 1,8mol%CO2, 9,4mol%ethane, 3,4mol%propane, 1mol%n-butane, and 83mol%methane.

All considerations given for this example concerning mixture feasibility, choice of preparation procedure, and weighing steps and sequences are the same as given in ISO6142. This also applies to all estimates for basic uncertainty sources and the purity tables of the gases used for preparation.

All calculations follow the principles, and use the tools and algorithms laid down in AnnexA. For the sake of simplicity, procedural steps such as matrix transformation, inversion or matrix calculus are not detailed each time they are used in the calculations.

Committee
PTI/15
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current

Standards Relationship
ISO/TS 29041:2008 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 6142:2001 Gas analysis Preparation of calibration gas mixtures Gravimetric method
ISO 14912:2003 Gas analysis — Conversion of gas mixture composition data

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PDF - English
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