BS 7405:1991

Committees responsible
Foreword
Section 1. General
1.0 Introduction
1.1 Scope
1.2 Definitions
1.3 Symbols
1.4 Flowmeter classification
1.5 Proprietary names
Section 2. General selection procedure
2.0 Introduction
2.1 Basic meter selection
2.2 Performance considerations
2.3 Fluid property considerations
2.4 Installation considerations
2.5 Environmental considerations
2.6 Economic considerations
2.7 Examples of flowmeter selection
Section 3. Flow measurement techniques
3.0 Introduction
3.1 Group 1 meters: orifices, venturis and nozzles
3.2 Group 2 meters: other differential pressure types
3.3 Group 3 meters: positive displacement types
3.4 Group 4 meters: rotary turbine type meters
3.5 Group 5 meters: fluid oscillatory types
3.6 Group 6 meters: electromagnetic types
3.7 Group 7 meters: ultrasonic types
3.8 Group 8 meters: direct and indirect mass types
3.9 Group 9 meters: thermal types
3.10 Group 10 meters: miscellaneous types
Section 4. Flowmeter applications
4.0 Introduction
4.1 Group 1 meter applications: orifices, venturis and
      nozzles
4.2 Group 2 meter applications: other differential
      pressure types
4.3 Group 3 meter applications: positive displacement
      (PD) types
4.4 Group 4 meter applications: rotary turbine types
4.5 Group 5 meter applications: fluid oscillatory
      types
4.6 Group 6 meter applications: electromagnetic types
4.7 Group 7 meter applications: ultrasonic types
4.8 Group 8 meter applications: direct and indirect
      mass types
4.9 Group 9 meter applications: thermal types
4.10 Group 10 meter applications: miscellaneous types
Section 5. Auxiliary instrumentation
5.0 Introduction
5.1 Pressure and differential pressure measurement
5.2 Temperature measurement
5.3 Density measurement
5.4 Humidity measurement
5.5 Ancillary electrical equipment
Section 6. Flowmeter calibration
6.0 Introduction
6.1 Calibration conditions
6.2 Factors to be considered in calibration
6.3 Calibration techniques for flowmeters
6.4 Traceability
Appendix A Bibliography
Appendix B Estimation of flow measurement uncertainty
Index
Publication(s) referred to

Also deals with secondary instrumentation and some aspects of calibration.

This British Standard provides guidance on the selection and application of flowmeters. It classifies them into ten major groups and covers the basic operating principles and application of each group. Also included is information on secondary instrumentation and some aspects of flowmeter calibration. The scope is restricted to closed conduit measurements in circular or non-circular cross section and therefore open channel systems are not included in the guide.

A bibliography containing details of the references in the text, is given in Appendix A.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.