16/30266428 DC : DRAFT MAR 2016
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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BS EN ISO 6145-6 - GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC METHODS - PART 6: CRITICAL FLOW ORIFICES
30-09-2017
18-04-2016
Foreword
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Principle
5 Calculation of mass flow rate and
volume flow rate
6 Calculation of amount of substance fraction
and volume fraction and associated uncertainty
evaluation
7 Application to the preparation of gas mixtures
8 Calibration and verification
Annex A (informative) - Example of calculation of
isentropic coefficient, viscosity and critical
flow coefficient
Annex B (informative) - Calculation of mass and volume
flow rates under real conditions
Annex C (informative) - Example of flow calculation
for toroidal critical flow orifices under ideal and
real conditions
Annex D (informative) - Calculation of mass flow
rate using flow calibration with pure nitrogen:
examples
Bibliography
BS EN ISO 6145-6.
| Committee |
PTI/15
|
| DocumentType |
Draft
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| ISO 9300:2005 | Measurement of gas flow by means of critical flow Venturi nozzles |
| ISO 16664:2017 | Gas analysis — Handling of calibration gases and gas mixtures — Guidelines |
| 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 19229:2015 | Gas analysis Purity analysis and the treatment of purity data |
| ISO 14912:2003 | Gas analysis — Conversion of gas mixture composition data |
| ISO 7504:2015 | Gas analysis Vocabulary |
| ISO 6145-1:2003 | Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 1: Methods of calibration |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
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