BSI PD ISO/TR 15377:2018 – TC:2020 Edition
$217.84
Tracked Changes. Measurement of fluid flow by means of pressure-differential devices. Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of ISO 5167
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 82 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | compares PD ISO/TR 15377:2018 |
| 2 | TRACKED CHANGES Text example 1 — indicates added text (in green) |
| 3 | National foreword Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication |
| 4 | Measurement of fluid flow by means of pressure-differential devices — Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of ISO 5167 |
| 5 | COPYRIGHT PROTECTED DOCUMENT |
| 7 | Foreword |
| 8 | Measurement of fluid flow by means of pressure- differential devices — Guidelines for the specification of orifice plates, nozzles and Venturi tubes beyond the scope of ISO 5167 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols Table 1 — Symbols |
| 9 | 5.1 Drain holes through the upstream face of the square-edged orifice plate or nozzle 5.1.1 General |
| 10 | 5.1.2 Square-edged orifice plates |
| 12 | 5.1.3 ISA 1932 nozzles |
| 13 | 5.1.4 Long radius nozzles 5.2 Square-edged orifice plates installed in pipes of diameter 25 mm ≤ D < 50 mm 5.2.1 General 5.2.2 Limits of use 5.2.3 Discharge coefficients and corresponding uncertainties 5.3 No upstream or downstream pipeline 5.3.1 General 5.3.2 Flow from a large space (no upstream pipeline) into a pipeline or another large space |
| 14 | 5.3.2.2 Square-edged orifice plates with corner tappings |
| 15 | 5.3.2.3 ISA 1932 nozzles |
| 16 | 5.3.2.4 Venturi nozzle |
| 17 | 5.3.3 Flow into a large space (no downstream pipeline) 5.3.3.2 Square-edged orifice plates with corner tappings 5.3.3.3 ISA 1932 nozzles and Venturi nozzles |
| 18 | 6 Orifice plates (except square-edged) 6.1 Conical entrance orifice plates 6.1.1 General 6.1.2 Limits of use 6.1.3 Description 6.1.3.1 General shape |
| 20 | Figure 1 — Conical entrance orifice plate |
| 21 | 6.1.3.2 Upstream face A |
| 22 | 6.1.3.3 Downstream face B 6.1.3.5 Conical entrance 6.1.3.6 Parallel bore 6.1.3.7 Edges H, I and G |
| 23 | 6.1.3.8 Diameter of orifice 6.1.4 Pressure tappings 6.1.5 Coefficients and corresponding uncertainties 6.2 Quarter-circle orifice plates 6.2.1 General 6.2.2 Limits of use |
| 24 | Table 3 — Minimum internal diameter of upstream pipe for quarter-circle orifice plates 6.2.3 Description 6.2.3.1 General shape |
| 26 | Figure 2 — Quarter-circle orifice plate |
| 27 | 6.2.3.3 Downstream face B 6.2.3.4 Thicknesses e and E 6.2.3.5 Upstream orifice profile |
| 28 | 6.2.3.6 Downstream edge 6.2.3.7 Diameter of orifice 6.2.4 Pressure tappings 6.2.5 Coefficients and corresponding uncertainties |
| 29 | 6.2.5.2 Expansibility (expansion) factor 6.2.5.3 Uncertainties Table 4 — Discharge coefficients for quarter-circle orifice plates |
| 30 | 6.3 Eccentric orifice plates 6.3.1 General 6.3.2 Limits of use 6.3.3 Description 6.3.3.1 General shape |
| 31 | 6.3.3.2 Upstream face A 6.3.3.3 Downstream face B |
| 32 | Figure 3 — Eccentric orifice plate |
| 33 | 6.3.3.5 Angle of bevel 6.3.3.6 Edges G, H and I 6.3.3.7 Diameter of orifice 6.3.3.8 Symmetrical plates |
| 34 | 6.3.3.9 Pressure tappings 6.3.4 Coefficients and corresponding uncertainties |
| 35 | Table 5 — Discharge coefficients for eccentric orifice plates |
| 36 | 7 Venturi tubes with machined convergent of angle 10,5 7.1 General 7.2 Description 7.3 Limits of use |
| 37 | 7.4 Discharge coefficient |
| 38 | 7.5 Expansibility [expansion] factor 7.6 Pressure loss 7.7 Installation requirements Table 7 — Required straight lengths for Venturi tubes with machined convergent of angle 10,5 |
| 42 | Bibliography |
| 46 | National foreword |
| 50 | Foreword |
| 51 | 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols |
| 53 | 5 Square-edged orifice plates and nozzles: With drain holes, in pipes below 50 mm diameter, and as inlet and outlet devices 5.1 Drain holes through the upstream face of the square-edged orifice plate or nozzle 5.1.1 General 5.1.2 Square-edged orifice plates |
| 55 | 5.1.3 ISA 1932 nozzles 5.1.4 Long radius nozzles 5.2 Square-edged orifice plates installed in pipes of diameter 25 mm ≤ D < 50 mm 5.2.1 General 5.2.2 Limits of use |
| 56 | 5.2.3 Discharge coefficients and corresponding uncertainties 5.3 No upstream or downstream pipeline 5.3.1 General 5.3.2 Flow from a large space (no upstream pipeline) into a pipeline or another large space |
| 58 | 5.3.3 Flow into a large space (no downstream pipeline) |
| 59 | 6 Orifice plates (except square-edged) 6.1 Conical entrance orifice plates 6.1.1 General 6.1.2 Limits of use |
| 60 | 6.1.3 Description |
| 63 | 6.1.4 Pressure tappings |
| 64 | 6.1.5 Coefficients and corresponding uncertainties 6.2 Quarter-circle orifice plates 6.2.1 General 6.2.2 Limits of use |
| 65 | 6.2.3 Description |
| 68 | 6.2.4 Pressure tappings 6.2.5 Coefficients and corresponding uncertainties |
| 69 | 6.3 Eccentric orifice plates 6.3.1 General |
| 70 | 6.3.2 Limits of use 6.3.3 Description |
| 73 | 6.3.4 Coefficients and corresponding uncertainties |
| 75 | 7 Venturi tubes with machined convergent of angle 10,5° 7.1 General 7.2 Description 7.3 Limits of use |
| 76 | 7.4 Discharge coefficient 7.5 Expansibility [expansion] factor 7.6 Pressure loss 7.7 Installation requirements |
| 78 | Annex A (informative) An example of the calculations in 5.1.2 |
| 81 | Bibliography |
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