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 |
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 |
