„The device connection pressure is the flow pressure at the gas connection of at a gas device (nominal value = 20 mbar)“ (TRGI 2008). The value at the gas leading pipe is controlled via a differential pressure measurement and the plant is optimally adjusted according to the manufacturer´s recommendations. The measurement is made by full load at the measurement connection piece prior to the gas fittings. The ecom pressure meters overview outlines which model fits which application.