Table of Contents

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

Abstract

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.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 113
Supersedes	ISO/DIS 1438 : 60.00 (2017)