DIN EN 1776:2014-01

This European Standard specifies functional requirements for the design, construction, testing, commissioning/decommissioning, operation, maintenance and where appropriate calibration, together with suitable documented provisions for all new gas measuring systems and any major changes of existing systems used for custody transfer. This standard is applicable for gases of the 2nd family according to EN 437. It is also applicable for treated non-conventional combustible gases complying with EN 437 and for which a detailed technical evaluation of the functional requirements (such as injected biomethane) is performed ensuring there are no other constituents or properties of the gases that can affect the integrity of the measuring systems. The standard should be read in conjunction with CEN/CLC/ETSI TR 50572 'Functional Reference Architecture for Communications in Smart Metering Systems' and EN 16314 'Gas meters - Additional functionalities' (often referred to as a smart gas meter). Communications protocols and interfaces for gas meters and remote reading of gas meters are outside the scope of this European Standard and are covered by the appropriate parts of EN 13757, which provide a number of protocols for meter communications.