BS 5844:1980
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
View Superseded by
Methods of measurement of fluid flow: estimation of uncertainty of a flow-rate measurement
Hardcopy , PDF
15-06-1998
English
30-04-1980
Important note : Users cannot be edited or removed once added to your Multi user PDF.
national foreword
Cooperating organizations
Specification
0. Introduction
0.1 Notation
0.2 Glossary
Section one. General theory
1. Scope and field of application
2. General principles
2.1 Terminology
2.2 The relation between uncertainty and confidence
level
3. Nature of errors
3.1 Spurious errors
3.2 Random errors
3.3 Systematic errors
4. Propagation of errors
4.1 Sensitivity
4.2 Identification of sources of errors
4.3 Combination of uncertainties
5. Presentation of results
Section two. Examples
6. Notation
7. Example of flow-rate measurement in circular pipes
7.1 General calculations
7.2 Detailed numerical example
7.3 Simplified numerical example
8. Example of open channel measurement
8.1 The formula for volume flow in open channel
8.2 The overall uncertainty of the flow determination
8.3 Numerical example
Annexes
A. Tests for outliers
B. Student's t distribution
C. Uncertainty in variables for which the values are
derived from independent experiments
D. Combination of uncertainties
Calculations required in order to arrive at a statistical estimate of the interval within which the true flowrate may be expected to lie. The calculations are so presented as to be applicable to measurement in both closed and open ducts.
| Committee |
CPI/113
|
| DocumentType |
Standard
|
| Pages |
28
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| SupersededBy |
| Standards | Relationship |
| ISO 5168:2005 | Identical |
| BS 3680-3F:1986 | Measurement of liquid flow in open channels. Stream flow measurement Collection and processing of data for determination of errors in measurement |
| BS 7118-2:1989 | Measurement of fluid flow: assessment of uncertainty in the calibration and use of flow measurement devices Non-linear calibration relationships |
| 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 3680-6:1995 | Measurement of liquid flow in open channels Guide to measurement of flow in tidal channels |
| BS 7834:1995 | Specification for turbine meters used for the measurement of gas flow in closed conduits |
| BS 1042-2.2:1983 | Measurement of fluid flow in closed conduits. Velocity area methods Method of measurement of velocity at one point of a conduit of circular cross section |
| 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 EN 60041:1995 | Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbines |
| 03/305320 DC : DRAFT MAY 2003 | BS 1339 - HUMIDITY - PART 3: GUIDE TO THE MEASUREMENT OF HUMIDITY |
| BS EN 29104:1993 | Measurement of fluid flow in closed conduits. Methods of evaluating the performance of electromagnetic flow-meters for liquids |
| BS 3680-3B:1997 | Measurement of liquid flow in open channels. Stream flow measurement Guide for the establishment and operation of a gauging station |
| BS 3680-5:1992 | Measurement of liquid flow in open channels Slope area method of estimation |
| BS 3680-4B:1986 | Methods of measurement of liquid flow in open channels. Weirs and flumes Triangular profile weirs |
| BS 3680-4E:1990 | Methods of measurement of liquid flow in open channels. Weirs and flumes Rectangular broad-crested weirs |
| BS 3680-4F:1990 | Methods of measurement of liquid flow in open channels. Weirs and flumes Round nose horizontal broad-crested weirs |
| BS 3122-1:1990 | Refrigerant compressors Methods of test for performance |
| BS 3680-3E:1993 | Measurement of liquid flow in open channels. Stream flow measurement Measurement of discharge by the ultrasonic (acoustic) method |
| BS 3680-4C:1981 | Methods of measurement of liquid flow in open channels. Weirs and flumes Flumes |
| BS 1339-3:2004 | Humidity Guide to the measurement of humidity |
| BS EN 27842:1991 | Methods for determination of discharge capacity of automatic steam traps |
| BS 1042-2.3:1984 | 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 |
| 00/122905 DC : DRAFT JULY 2000 | BS 1339-3 - GUIDE TO THE MEASUREMENT OF HUMIDITY |
| BS 7405:1991 | Guide to selection and application of flowmeters for the measurement of fluid flow in closed conduits |
| BS 3680-3D:1980 | Measurement of liquid flow in open channels. Stream flow measurement Moving-boat method |
| BS EN ISO 8316:1997 | Method of liquid flow in closed conduits. Method by collection of the liquid in a volumetric tank |
| BS EN ISO 6817:1997 | Measurement of conductive liquid flow in closed conduits. Method using electromagnetic flowmeters |
| EN 29104:1993 | Measurement of fluid flow in closed conduits - Methods of evaluating the performance of electromagnetic flow-meters for liquids (ISO 9104:1991) |
| BS 3680-4I:1986 | Methods of measurement of liquid flow in open channels. Weirs and flumes V-shaped broad crested weirs |
| BS EN 24006:1993 | Measurement of fluid flow in closed conduits. Vocabulary and symbols |
| ISO 3534:1977 | Statistics — Vocabulary and symbols |
| ISO 748:2007 | Hydrometry Measurement of liquid flow in open channels using current-meters or floats |
| BS 3680-3A:1980 | Measurement of liquid flow in open channels. Stream flow measurement Velocity-area methods |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.