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BS EN ISO 6145-8:2008

Current
Current

The latest, up-to-date edition.

Gas analysis. Preparation of calibration gas mixtures using dynamic volumetric methods Diffusion method
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

02-28-2009

Introduction
1 Scope
2 Normative references
3 Principle
4 Reagents and materials
5 Apparatus
6 Procedure
  6.1 Preliminary checks and operating
      conditions
  6.2 Determination of mass loss
7 Expression of results
  7.1 Calculation
  7.2 Sources of uncertainty
Annex A (informative) - Practical example of a diffusion
                        cell calibrator configured for
                        evaluating speed of response in
                        a hygrometer
Annex B (informative) - Example of performances of
                        diffusion cells for toluene and
                        trichloromethane
Annex C (informative) - Example of uncertainty calculations
                        for a periodic weighing system
Bibliography

Describes a dynamic method using diffusion for the preparation of calibration gas mixtures containing component mole fractions ranging from 10[-9] to 10[-3].

Committee
PTI/15
DevelopmentNote
Renumbers and supersedes BS ISO 6145-8. 2008 version incorporates corrigendum to BS ISO 6145-8. (02/2009)
DocumentType
Standard
Pages
28
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
EN ISO 6145-8:2008 Identical
ISO 6145-8:2005 Identical

ISO 6145-7:2009 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 7: Thermal mass-flow controllers
ISO 6143:2001 Gas analysis — Comparison methods for determining and checking the composition of calibration gas mixtures
ISO 6145-1:2003 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 1: Methods of calibration
ISO 6145-6:2017 Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 6: Critical flow orifices

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