Hydrometry. Open channel flow measurement using thin-plate weirs

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

28-06-2017

Publisher

British Standards Institution

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Principle
6 Installation
7 Measurement of head
8 Maintenance
9 Rectangular thin-plate weir
10 Triangular-notch thin-plate weir
11 Uncertainties of flow measurement
12 Example
Annex A (informative) - Flow measurement with
        small weir tanks
Annex B (normative) - Guide to the design and
        installation of a flow straightener
Annex C (informative) - Introduction to measurement
        uncertainty
Annex D (informative) - Sample measurement
        performance for use in hydrometric worked
        examples
Annex E (informative) - Specimen tables
Bibliography

Describes the requirements for the use of rectangular and triangular (V-notch) thin-plate weirs for the measurement of flow of clear water in open channels under free flow conditions.

Committee	CPI/113
DevelopmentNote	Supersedes BS 3680-4A(1981) & 05/30140799 DC. (05/2008) Supersedes 16/30301971 DC. (07/2017)
DocumentType	Standard
Pages	72
PublisherName	British Standards Institution
Status	Current
Supersedes	16/30301971 DC : 0 05/30140799 DC : DRAFT OCT 2005 BS ISO 1438:2008 BS 3680-4A:1981

Standards	Relationship
ISO 1438:2017	Identical

ISO/IEC 17025:2005	General requirements for the competence of testing and calibration laboratories
ISO 18365:2013	Hydrometry Selection, establishment and operation of a gauging station
ISO 4373:2008	Hydrometry Water level measuring devices
ISO/TS 25377:2007	Hydrometric uncertainty guidance (HUG)
ISO 772:1996	Hydrometric determinations — Vocabulary and symbols
ISO/IEC Guide 98-3:2008	Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

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BS ISO 1438:2017

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