scope:

Specifies requirements and tests for the construction, performance and safety of battery powered ultrasonic gas meters having co-axial single pipe, or two pipe connections, used to measure volumes of distributed fuel gases of the first and/or second and/or third family, at maximum working pressures of up to 0,5 bar and maximum actual flow rates of up to 10 m3/h over a minimum ambient and gas temperature range of -10 °C to +40 °C, for domestic applications. Applies to meters where the measuring element and the register(s) are enclosed in the same case.