BS ISO 11631:1998
Current
The latest, up-to-date edition.
Measurement of fluid flow. Methods of specifying flowmeter performance
Hardcopy , PDF
English
15-01-1999
1 Scope
2 Normative reference
3 Terms and definitions
4 General requirements
5 Traceability
6 Uncertainty of flow measurement
7 Conditions of use
8 Traceability group
Annex A (informative) Illustrations of linearity
Annex B (normative) Repeatability
Bibliography
Specifies methods of describing the performance of any flowmeter and indicates how flowmeters may be classified according to their traceability groups.
| Committee |
CPI/30
|
| DevelopmentNote |
Supersedes 91/33768 DC. (07/2005)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard applies to technical specifications and descriptions issued by manufacturers of flowmeters. It specifies methods of describing the performance of any flowmeter, for use in either closed conduits or open channels. It indicates how flowmeters may be classified according to their traceability group, and specifies how manufacturer\'s statements on traceability, quality assurance and conditions of use should be expressed, although further statements may be required for other conditions of use.
NOTE The terms and definitions given in clause3 include a large number of associated terms to encourage common usage of these terms in technical specifications.
| Standards | Relationship |
| ISO 11631:1998 | Identical |
| ISO 7066-2:1988 | Assessment of uncertainty in the calibration and use of flow measurement devices — Part 2: Non-linear calibration relationships |
| ISO/IEC Guide 25:1990 | General requirements for the competence of calibration and testing laboratories |
| IEC 60770:1984 | Methods of evaluating the performance of transmitters for use in industrial-process control systems |
| ISO/TR 5168:1998 | Measurement of fluid flow — Evaluation of uncertainties |
| ISO/TR 7066-1:1997 | Assessment of uncertainty in calibration and use of flow measurement devices — Part 1: Linear calibration relationships |
| ISO 4006:1991 | Measurement of fluid flow in closed conduits — Vocabulary and symbols |
| ISO 3534-1:2006 | Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability |
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