Abstract

Proposes requirements for water meters for use in non-urban applications in open channel and part-filled pipe applications. It primarily applies to metering for irrigation water.

Scope

This Standard specifies requirements for water meters for use in non-urban applications in open channel and part-filled pipe applications. It primarily applies to metering for irrigation water; however, it is intended that it be used for non-urban water applications other than applications covered by AS 3565.1 or AS 4747.2.
Two types of meters are covered in this Standard, as follows:
(a) A ‘self-contained unit’—a meter that defines its own geometry, is able to be pattern-approved as a complete water meter, calibrated upon assembly and supplied by a single supplier.
(b) A ‘modular metering system’—a device or group of instruments (which may be supplied as a pattern approved metering system) that does not define the installation geometry and requires configuration after installation.
NOTES:
1 The requirements for these types of meters to demonstrate compliance with this Standard and hence with the National Framework are set out and illustrated in Section 7.
2 Purchasing guidelines are given in Appendix A.
The Standard covers meters that operate under the following conditions:
(i) Open channels.
(ii) Working water temperature range of 0.1°C to 30°C. The maximum admissible temperature is 50°C, which is the limiting condition for the meter.
(iii) Ambient temperatures range of ?5°C to 55°C.
(iv) Ambient humidity range of 0% to 100%, except for remote-indicating devices where the range is 0% to 93%.
NOTE: Meters with undefined or variable profile channel are not covered by this Standard.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	CE-024
Supersedes	DR AS 4747.3 CP ATS 4747.3-2008