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AS4747 Pattern Appr...
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AS4747 Pattern Approved Meters

The National Measurement Institute of Australia checks non-urban water meters for compliance with the Australian Standard for Non-Urban water meters (AS4747). If the meter passes testing, it is pattern approved as compliant with the requirements for closed conduit meters (NMI-M10); or with the requirements for open channel meters (NMI-M11); or with the requirements of equivalent overseas standards. A pattern approved meter complies with these requirements within the operating ranges specified by the meter manufacturer.