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.
Water meters for cold potable water and hot water - Part 1: Metrological and technical requirements (ISO 4064-1:2014); German version EN ISO 4064-1:2017— 56 стр.
Measurement of fluid flow in closed conduits; methods of evaluating the performance of electromagnetic flow-meters for liquids (ISO 9104:1991); German version EN 29104:1993— 18 стр.