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BS 1042-2.3:1984

BS 1042-2.3:1984

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Measurement of fluid flow in closed conduits. Velocity area methods Methods of flow measurement in swirling or asymmetric flow conditions in circular ducts by means of current-meters or Pitot static tubes

Available format(s)

Hardcopy , PDF

Superseded date

31-08-2008

Language(s)

English

Published date

31-05-1984

Publisher

British Standards Institution

National foreword
Committees responsible
Methods
0. Introduction
1. Scope and field of application
2. References
3. Symbols
4. Principle
5. Choice of measuring plane
6. Devices for improving flow conditions
7. Measurement of local velocities
8. Determination of mean flow velocity
9. Accuracy of flow-rate estimation
Annexes
A. Detection and removal of regular pressure
     fluctuations
B. Damping of manometers
C. Calculation of Pitot static tube locations for
     method B
D. Corrections to be applied when a Pitot static tube
     is used
E. Corrections to be applied when a current-meter is
     used
F. Errors due to non-axisymmetrical velocity
     distribution
Figures
1. Installation of straightener
2. Type A - Zanker straightener
3. Type B - Sprenkle straightener
4. Type C - Tube bundle straightener
5. Type D - AMCA straightener
6. type E - Etoile straightener
7. Wedge-shaped yaw probe
8. Cylindrical yaw probe
9. k psi versus psi for typical Pitot static tubes
10. Maximum permissible size of Pitot static tube
     in method B
11. Examples of directional response of different
     types of current-meters
12. Non-return valve
13. Arrangement of non-return valves
14. Device for checking damping of pressure
     fluctuations in the leads to the manometer
15. Radial positions of Pitot static tube in swirling
     flow when method B is used
16. Pitot static tube
17. Example of the effect of axial pulsations on
     current meter velocity estimation
18. Example of the effect of tangential pulsations on
     current meter velocity estimation

Gives velocity area methods for measuring flow and details the precautions to be taken and the corrections to be made. Also describes the additional uncertainties which are introduced when a measurement in asymmetric or swirling flow has to be made.

Committee
CPI/30
DevelopmentNote
Supersedes BS 1042-2(1964) (07/2004) Supersedes 82/25605 DC. (06/2005)
DocumentType
Standard
Pages
28
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

BS 4773-1:1971 Methods for testing and rating air terminal devices for air distribution systems Aerodynamic testing
BS 3986-1:1998 Methods of test for drying performance of agricultural grain dryers General procedures and limited requirements for wheat
BS 4876:1984 Specification for performance requirements for domestic flued oil burning appliances (including test procedures)
BS 6199-1.2:1991 Measurement of liquid flow in closed conduits using weighing and volumetric methods. Weighing method Procedures for checking static weighing systems
BS 1042-2.4:1989 Measurement of fluid flow in closed conduits. Velocity area methods Method of measurement of clean water flow using current meters in full conduits and under regular flow conditions
BS 599:1966 Methods of testing pumps
BS 848-1:1980 Fans for general purposes Methods of testing performance
BS 5990:1981 Specification for direct gas fired forced convection air heaters for space heating (60 kW up to 2 MW input): safety and performance requirements (excluding electrical requirements) (2nd family gases)
BS 4979-1:1973 Methods for testing and rating air control devices for air distribution systems Aerodynamic testing of constant flow rate assemblies without a heat exchanger
BS 893:1978 Method for the measurement of the concentration of particulate material in ducts carrying gases
BS 5991:1983 Specification for indirect gas fired forced convection air heaters for space heating (60 kW up to 2 MW input): safety and performance requirements (excluding electrical requirements) (2nd family gases)
BS EN ISO 6817:1997 Measurement of conductive liquid flow in closed conduits. Method using electromagnetic flowmeters
BS 3986(1991) : 1991 AMD 9836 METHODS OF TEST FOR DRYING PERFORMANCE OF AGRICULTURAL GRAIN DRYERS - GENERAL PROCEDURES AND LIMITED REQUIREMENTS FOR WHEAT

ISO 3354:2008 Measurement of clean water flow in closed conduits — Velocity-area method using current-meters in full conduits and under regular flow conditions
BS 3680-8C:1980 Measurement of liquid flow in open channels. Measuring instruments and equipment Calibration of rotating-element current-meters in straight open tanks
ISO 3313 : 1992 MEASUREMENT OF PULSATING FLUID FLOW IN A PIPE BY MEANS OF ORIFICE PLATES, NOZZLES OR VENTURI TUBES, IN PARTICULAR IN THE CASE OF SINUSOIDAL OR SQUARE WAVE INTERMITTENT PERIODIC TYPE FLUCTUATIONS
ISO/TR 3313:1992 Measurement of pulsating fluid flow in a pipe by means of orifice plates, nozzles or Venturi tubes
BS 1042-2.1:1983 Measurement of fluid flow in closed conduits. Velocity area methods Method using Pitot static tubes
BS 5844:1980 Methods of measurement of fluid flow: estimation of uncertainty of a flow-rate measurement

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