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BS EN ISO 5167-6:2019 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Wedge meters >
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BS EN ISO 5167-6:2019 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Wedge meters, 2019
- undefined
- European foreword
- Endorsement notice
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principles of the method of measurement and computation
- 5 Wedge meters
- 5.1 Field of application
- 5.2 General shape
- 5.3 Material and manufacture
- 5.4 Pressure tappings
- 5.5 Discharge coefficient, C
- 5.5.1 Limits of use
- 5.5.2 Discharge coefficient of the wedge meter
- 5.6 Expansibility [expansion] factor, ε
- 5.7 Uncertainty of the discharge coefficient, C
- 5.8 Uncertainty of the expansibility [expansion] factor, ε
- 5.9 Pressure loss
- 6 Installation requirements
- 6.1 General
- 6.2 Minimum upstream and downstream straight lengths for installations between various fittings and the wedge meter
- 6.3 Additional specific installation requirements for wedge meters
- 6.3.1 Circularity and cylindricality of pipes upstream and downstream of the wedge meter
- 6.3.2 Roughness of the upstream and downstream pipe
- 6.3.3 Positioning of a thermowell
- 6.3.4 Bidirectional wedge meters
- 7 Flow calibration of wedge meters
- 7.1 General
- 7.2 Test facility
- 7.3 Meter installation
- 7.4 Design of the test programme
- 7.5 Reporting the calibration results
- 7.6 Uncertainty analysis of the calibration
- 7.6.1 General
- 7.6.2 Uncertainty of the test facility
- 7.6.3 Uncertainty of the wedge meter
- Annex A (informative) Table of expansibility [expansion] factor
- Annex B (informative) Use of Kd2 parameter
- Bibliography [Go to Page]