Standard
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AS 4747.4:2025
[Current]Metering systems for non-urban water supply, Part 4: Installation and commissioning of metering systems
AS 4747.4:2025 sets out the installation and commissioning requirements for non-urban metering systems in closed conduit, fully charged applications, and in open channel and partially filled conduit applications.
Published: 27/06/2025
Pages: 33
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
1.4 Evaluation of product conformity
2 Criteria for the design of metering installations
2.1 General
2.2 Materials
2.3 Performance
2.4 Product documentation
2.5 Electrically powered metering systems
3 Installation requirements
3.1 General
3.2 Bypass
3.3 Location
3.4 Flow disturbances
3.4.1 General
3.4.2 Straight lengths of pipe and flow disturbances (for closed conduit installations)
3.4.3 Eliminating flow disturbances (for open channel installations)
3.5 Meter system mounting
3.6 External environment
3.7 Air ingress and egress (for closed conduit installations)
3.8 Associated fittings
3.8.1 Closed conduit installations
3.8.2 Open channel installations
3.9 Security of operation
3.9.1 Sealing the meter installation
3.9.2 Data security
3.10 In-service testing
3.10.1 General
3.10.2 Laboratory in-service testing
3.10.3 Direct volumetric comparison
3.10.4 Alternative test methods
4 Commissioning
Appendix A
Appendix B
B.1 General
B.2 Flow disturbances
B.3 Minimising the effects of flow disturbances
Appendix C
Bibliography
Cited references in this standard
Content history
[Superseded]
[Superseded]
[Superseded]
[Superseded]
DR AS 4747.4:2024