Table of Contents

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Reference conditions
5 Symbols, units and equations
6 External examination
7 Performance tests for all water meters
8 Performance tests related to influence factors and
   disturbances
9 Test program for type evaluation
10 Tests for initial verification
11 Presentation of results
Annex A (normative) - Type examination and testing of
        checking facilities of electronic devices
Annex B (normative) - Calculating the relative error (of
        indication) of a water meter
Annex C (normative) - Installation requirements for flow
        disturbance tests
Annex D (normative) - Type evaluation of a family of
        water meters
Annex E (informative) - Examples of methods and
        components used for testing concentric water
        meters
Annex F (informative) - Determining the density of water
Annex G (informative) - Maximum uncertainties in the
        measurement of influence factors and disturbances
Annex H (informative) - Pressure loss test pressure tappings,
        hole and slot details
Annex I (normative) - Flow disturbers
Bibliography

Abstract

This part of ISO 4064|OIML R 49 is applicable to the type evaluation and initial verification testing of water meters for cold potable water and hot water as defined in ISO 4064-1:2014|OIML R 49‑1:2013.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 30
Supersedes	ISO/DIS 4064-2 : 60.00 (2013)