BS 1042-2.3:1984
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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
Hardcopy , PDF
08-31-2008
English
05-31-1984
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
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