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BS 7834:1995

Current
Current

The latest, up-to-date edition.

Specification for turbine meters used for the measurement of gas flow in closed conduits
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-10-1995

Committees responsible
National foreword
Specification
1. Scope
2. Normative references
3. Definitions and symbols
4. Principle of the method of measurement
5. Flowrates
6. Meter construction
7. Pressure testing
8. Performance characteristics
9. Output and readout
Annexes
A. (informative) Recommendations for use
B. (informative) Other meter performance characteristics
C. (informative) Data computation and presentation
D. (informative) Field checks
E. (informative) Perturbations
Tables
1. Symbols and subscripts
2. Maximum flowrates and nominal sizes
3. Strength test duration
E.1 Relationship of DN1 to DN
Figures
E.1 Piping configurations for tests at low level perturbation
E.2 Location of half-area opening for tests at high level
     perturbation
E.3 Flow conditioner to damp out high level perturbation
E.4 Alternative flow condition configuration to damp out high
     level perturbation
E.5 Meter dimensions defining similarity for various size
     meters

Specifies dimensions, ranges, construction, performance, calibration and output characteristics of turbine meters for gas flow measurement (but not for fuel gas for fiscal purposes). Also deals with installation conditions and leakage and pressure testing.

This International Standard specifies dimensions, ranges, construction, performance, calibration and output characteristics of turbine meters for gas flow measurement.

It also deals with installation conditions, leakage testing and pressure testing and provides a series of informative Annex A to Annex E including recommendations for use, field checks and perturbations of the fluid flowing.

In many countries, some or all of the items covered by this International Standard are subject to mandatory regulations imposed by the laws of these countries. In cases where conflict exists between such mandatory regulations and this International Standard, the former shall prevail.

Committee
CPI/30
DevelopmentNote
Supersedes 91/20242 DC. Also numbered as ISO 9951. (09/2005)
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Current
Supersedes

BS 7965:2000 The selection, installation, operation and calibration of diagonal path transit time ultrasonic flowmeters for industrial gas applications
BS 7965:2013 Guide to the selection, installation, operation and calibration of diagonal path transit time ultrasonic flowmeters for industrial gas applications
BS 7965:2009 Guide to the selection, installation, operation and calibration of diagonal path transit time ultrasonic flowmeters for industrial gas applications
13/30268440 DC : 0 BS 7965 - GUIDE TO THE SELECTION, INSTALLATION, OPERATION AND CALIBRATION OF DIAGONAL PATH TRANSIT TIME ULTRASONIC FLOWMETERS FOR INDUSTRIAL GAS APPLICATIONS

ISO 6708:1995 Pipework components Definition and selection of DN (nominal size)
BS 2045:1965 Preferred numbers
PD 6461-1:1995 General metrology Basic and general terms (VIM)
BS 5844:1980 Methods of measurement of fluid flow: estimation of uncertainty of a flow-rate measurement
BS EN 24006:1993 Measurement of fluid flow in closed conduits. Vocabulary and symbols
ISO 5208:2015 Industrial valves Pressure testing of metallic valves

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