BSI PD ISO/TR 12767:2023
$167.15
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 | 44 |
PDF Catalog
PDF Pages | PDF Title |
---|---|
2 | National foreword |
7 | Foreword |
8 | Introduction |
9 | 1 Scope 2 Normative references 3 Terms and definitions |
10 | 4 Symbols |
11 | 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 |
12 | 6.2 Thickness of orifice edge |
13 | 6.3 Condition of upstream and downstream faces of orifice plate |
14 | 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 |
15 | 6.5 Condition of pressure tappings 7 Effects of pipeline near the meter 7.1 Pipe diameter 7.2 Steps and taper sections |
16 | 7.3 Diameter of carrier ring |
19 | 7.4 Undersize joint rings 7.5 Protruding welds 7.6 Eccentricity |
21 | 8 Effects of pipe layout 8.1 General |
22 | 8.2 Discharge coefficient compensation 8.2.1 Corrections |
23 | 8.2.2 Additional uncertainty |
24 | 8.3 Pressure tappings 8.4 Devices for improving flow conditions 9 Operational deviations 9.1 General |
25 | 9.2 Deformation of an orifice plate 9.2.1 General 9.2.2 Elastic deformation 9.2.3 Plastic deformation |
26 | 9.3 Deposition on the upstream face of an orifice plate |
30 | 9.4 Deposition in the meter tube |
31 | 9.5 Orifice-plate edge sharpness 9.5.1 Deterioration 9.5.2 Plate reversal |
32 | 9.6 Deposition and increase of surface roughness in Venturi tubes 9.6.1 General 9.6.2 Deposition 9.6.3 Surface roughness |
33 | 10 Pipe roughness 10.1 General |
34 | 10.2 Upstream pipe |
38 | 10.3 Downstream pipe 10.4 Reduction of roughness effects 10.5 Maintenance |
40 | Bibliography |