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BS EN ISO 6145-7:2018 – TC:2020 Edition

BS EN ISO 6145-7:2018 – TC:2020 Edition

$134.27

Tracked Changes. Gas analysis. Preparation of calibration gas mixtures using dynamic methods – Thermal mass-flow controllers

Published By Publication Date Number of Pages
BSI 2020 50
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PDF Catalog

PDF Pages PDF Title
30 National foreword
32 European foreword
34 Foreword
35 1 Scope
2 Normative references
3 Terms and definitions
36 4 Symbols
5 Principle
6 Set-up
6.1 General
37 6.2 Thermal mass-flow controller using a constant current supply
6.3 Thermal mass-flow controller under constant temperature control
38 7 Preparation of gas mixtures
7.1 Description of the experimental procedure
40 7.2 Range of validity
7.3 Operating conditions
41 8 Calculations
8.1 Volume fraction
8.2 Sources of uncertainty
42 8.3 Uncertainty of measurement
43 Annex A (informative) Pre-mixed gases for the preparation of mixtures of high dilution
44 Annex B (informative) Practical hints
46 Annex C (informative) Calculation of uncertainties
49 Bibliography

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BS EN ISO 6145-7:2018 - TC
$134.27