Water meters intended for the metering of cold potable water and hot water - Part 1: Metrological and technical requirements (ISO/DIS 4064-1:2011); German version prEN ISO 4064-1:2011
Water meters for cold potable water and hot water - Part 1: Metrological and technical requirements (ISO 4064-1:2014); German version EN ISO 4064-1:2014— 49 стр.