CEN/TC 237/WG 1 - Diaphragm gas meters

To harmonize the standard under the MID, 2004/22/EC.  The Target dates have been shortened in order to meet the enforcement date of the MID.

This European Standard specifies the requirements and tests for the construction, performance and safety of diaphragm gas meters (hereinafter referred to as meters) having co-axial single pipe, or two pipe connections, used to measure volumes of fuel gases of the 1st, 2nd and 3rd families according to EN 437:1993, at maximum working pressures of up to 1 bar and maximum actual flow rates of up to 160 m3/h over a minimum ambient and gas temperature range of -5°C to + 35 °C.