BS ISO 14511:2019 – TC:2020 Edition
$217.84
Tracked Changes. Measurement of fluid flow in closed conduits. Thermal mass flowmeters
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 82 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 44 | National foreword |
| 49 | Foreword |
| 50 | Introduction |
| 51 | 1 Scope 2 Normative references 3 Terms and definitions 3.1 General terms |
| 52 | 3.2 Specific terms |
| 54 | 4 Selection of thermal mass flowmeters |
| 55 | 5 Capillary thermal mass flowmeter (CTMF meter) 5.1 Principles of measurement |
| 57 | 5.2 Typical design |
| 58 | 5.3 Applications and limitations of use 5.3.1 Gas property effects 5.3.2 Application and fluid properties |
| 59 | 5.3.3 Temperature effects 5.3.4 Pressure effects 5.3.5 Pulsation effects 5.3.6 Pressure loss 5.3.7 Cleanness of the gas 5.3.8 Mounting orientation effects 5.3.9 Installation effects for flow profile |
| 60 | 5.3.10 Vibrations — Hydraulic and mechanical 5.3.11 Valves 5.4 Meter selection 5.4.1 Principal requirement 5.4.2 Performance specifications 5.4.3 Physical specifications |
| 61 | 5.4.4 Meter ratings 5.4.5 Application and fluid properties 5.4.6 Corrosion 5.4.7 Transmitter specifications 5.5 Installation and commissioning 5.5.1 General considerations |
| 62 | 5.5.2 Safety 5.5.3 Mechanical stress 5.5.4 Process adjustment |
| 63 | 6 Insertion and/or in-line thermal mass flowmeter (ITMF meter) 6.1 Principle of measurement 6.1.1 General |
| 64 | 6.1.2 Constant power method 6.1.3 Constant-temperature-differential method |
| 65 | 6.2 Typical design 6.2.1 ITMF basic design |
| 66 | 6.2.2 In-line ITMF meter 6.2.3 Insertion-ITMF meter |
| 67 | 6.2.4 Multi-point insertion-ITMF meter |
| 68 | 6.3 Applications and limitations of use 6.3.1 General remarks 6.3.2 Normalized volume flowrate units 6.3.3 Fluid property effects 6.3.4 Temperature effects 6.3.5 Pressure effects |
| 69 | 6.3.6 Fluid phase 6.3.7 Bi-directional flow 6.3.8 Pulsation effects 6.3.9 Pressure loss 6.3.10 Sensor contamination 6.3.11 Mounting orientation effects 6.3.12 Installation effects |
| 70 | 6.3.13 Conduit vibrations 6.4 Meter selection 6.4.1 General 6.4.2 Performance specifications |
| 71 | 6.4.3 Physical specifications 6.4.4 Meter ratings 6.4.5 Application and fluid properties 6.4.6 Corrosion 6.4.7 Transmitter specifications |
| 72 | 6.5 Installation and commissioning 6.5.1 General considerations 6.5.2 Cleaning 6.5.3 Safety 6.5.4 Mechanical stress |
| 73 | 6.5.5 Process conditions |
| 74 | 7 Instrument specification sheet and marking 7.1 User specification sheet 7.2 Manufacturer’s data sheet |
| 75 | 7.3 Marking 7.3.1 Mandatory |
| 76 | 7.3.2 Optional 8 Calibration 8.1 General considerations 8.2 Use of the desired gas under process conditions |
| 77 | 8.3 Use of a surrogate gas 8.4 In situ calibration 8.5 Insertion-ITMF meter 8.6 Calibration frequency 8.7 Calibration certificate |
| 78 | 9 Pre-installation inspection and testing 10 Maintenance 10.1 General 10.2 Visual inspection |
| 79 | 10.3 Functional test 10.4 Record keeping (Maintenance audit trail) |
| 80 | Bibliography |
