AS 4747.8-2013

Sets out 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.

This Standard specifies requirements for the metrological assurance of non-urban water meters used in full flowing pipes, open channels, and pipes deliberately flowing partially full, and general technical requirements for a system that governs in-service operation of meters.Compliance with this Standard will ensure ongoing obligations for meter operations are met in accordance with the ‘National Framework for Non-urban Water Metering Policy Paper’ (the Policy paper).NOTES: 1This Standard should be read in conjunction with National Framework for Non-urban Water Metering Policy Paper.2The policy applies to meters (including measuring systems, devices and their component parts) owned by entitlement holders, water service providers or jurisdictional governments and used for trade and/or related resource management activities in a non-urban setting.3The policy paper has been developed to ensure adequate rigour during meter establishment and operational phases to achieve an acceptable level of confidence in meter performance and accuracy, such that a meter operates within the maximum permissible limits of measurement error (?5%) allowable under in situ conditions.The Standard applies to meters that operate—(a)with closed conduit, open channel, or closed conduit flowing partially full;(b)with temperature of water from 0.1°C to 30°C;(c)at ambient temperatures of ?5°C to 55°C; and (d)with a local display.This Standard does not seek to repeat requirements outlined in the Policy Paper but provides specific requirement, and guidance, on the following areas:(i)Meter selection and initial verification.(ii)Installation.(iii)Validation (post installation/ongoing).(iv)Re-verification.(v)Maintenance.

First published as ATS 4747.8-2010.
Revised and redesignated AS 4747.8-2013.