This European Pre-standard specifies requirements and tests for the construction, performance and safety of battery powered ultrasonic gas meters (hereinafter referred to as 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, as given in EN 437, 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. This Pre-standard applies to meters where the measuring element and the register(s) are enclosed in the same case.
Unless otherwise stated, all pressures given in this document are gauge pressures.
Clauses 1 to 15 and annex B are for design and type testing only.
NOTE See annex A for production requirements
99.60 Withdrawal effective
Jan 24, 2007