AS 4747.6-2013

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

This Standard sets out requirements for the installation and commissioning of meters complying with NMI M11-1 and AS 4747.3, for use in non-urban applications in open channel and part-filled pipe applications. The Standard principally covers metering for irrigation water.Two types of meter installations 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: 1The 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 of AS 4747.3.2Meters with undefined or variable channel are not covered by this Standard. In this Standard, a meter installation is considered to include—(i)the meter, its indicating device and all ancillary equipment; and(ii)the upstream and downstream pipe or emplacement that may have a material effect on the meter unit. The Standard covers meters that operate under the following conditions:(A)Open channels.(B)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.(C)Ambient temperature range of ?5°C to 55°C.(D)Ambient humidity range of 0% to 100% except for remote indicating devices where the range is 0% to 93%.

First published as ATS 4747.6-2008.
Revised and redesignated AS 4747.6-2013.