BSI PD ISO/TR 12767:2023 – TC
$280.87
Tracked Changes. Measurement of fluid flow by means of pressure differential devices. Guidelines on the effect of departure from the specifications and operating conditions given in ISO 5167
| Published By | Publication Date | Number of Pages |
| BSI | 2023 | 113 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 70 | National foreword |
| 75 | Foreword |
| 76 | Introduction |
| 77 | 1 Scope 2 Normative references 3 Terms and definitions |
| 78 | 4 Symbols |
| 79 | 5 Effect of errors on flowrate calculations 5.1 General 5.2 Quantifiable effects 6 Effects of deviations in construction 6.1 Orifice-plate edge sharpness |
| 80 | 6.2 Thickness of orifice edge |
| 81 | 6.3 Condition of upstream and downstream faces of orifice plate |
| 82 | 6.4 Position of pressure tappings for an orifice 6.4.1 General 6.4.2 Calculation of discharge coefficient 6.4.3 Estimation of additional uncertainty 6.4.4 Example |
| 83 | 6.5 Condition of pressure tappings 7 Effects of pipeline near the meter 7.1 Pipe diameter 7.2 Steps and taper sections |
| 84 | 7.3 Diameter of carrier ring |
| 87 | 7.4 Undersize joint rings 7.5 Protruding welds 7.6 Eccentricity |
| 89 | 8 Effects of pipe layout 8.1 General |
| 90 | 8.2 Discharge coefficient compensation 8.2.1 Corrections |
| 91 | 8.2.2 Additional uncertainty |
| 92 | 8.3 Pressure tappings 8.4 Devices for improving flow conditions 9 Operational deviations 9.1 General |
| 93 | 9.2 Deformation of an orifice plate 9.2.1 General 9.2.2 Elastic deformation 9.2.3 Plastic deformation |
| 94 | 9.3 Deposition on the upstream face of an orifice plate |
| 98 | 9.4 Deposition in the meter tube |
| 99 | 9.5 Orifice-plate edge sharpness 9.5.1 Deterioration 9.5.2 Plate reversal |
| 100 | 9.6 Deposition and increase of surface roughness in Venturi tubes 9.6.1 General 9.6.2 Deposition 9.6.3 Surface roughness |
| 101 | 10 Pipe roughness 10.1 General |
| 102 | 10.2 Upstream pipe |
| 106 | 10.3 Downstream pipe 10.4 Reduction of roughness effects 10.5 Maintenance |
| 108 | Bibliography |
