The notified Standard is applicable to the type evaluation and routine verification testing of water meters for cold potable water and hot water as defined in NCh No. 3274/1. Certificates of conformity must be issued for water meters in accordance with the provisions of NCh No. 3274/1.The notified text sets out details of the test programme, principles, equipment and procedures to be used for the type evaluation, and routine verification of a meter type.The provisions of this Standard also apply to ancillary devices.The provisions include requirements for testing the complete water meter and for testing the measurement transducer (including the flow or volume sensor) and the calculator (including the indicating device) of a water meter as separate units.