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BS ISO 11631:1998

Current
Current

The latest, up-to-date edition.

Measurement of fluid flow. Methods of specifying flowmeter performance
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-15-1999

Publisher

British Standards Institution

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.

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.

Committee
CPI/30
DevelopmentNote
Supersedes 91/33768 DC. (07/2005)
DocumentType
Standard
Pages
18
PublisherName
British Standards Institution
Status
Current
Supersedes

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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