ISO 4064-5:2014适用于水表，该水表用于测量通过充满电的封闭管道的饮用冷水和热水的流量。这些水表包含指示综合水量的装置。 ISO 4064-5:2014规定了单个、组合和同心水表、相关配件、安装、仪表特殊要求的选择标准，以及新仪表或维修仪表的首次运行，以确保准确的恒定测量和可靠的仪表读数。 除了基于机械原理的水表外，ISO 4064-5:2014还适用于基于电气或电子原理的水表，以及基于包含电子装置的机械原理的水表，用于测量饮用冷水和热水的体积。 它也适用于电子辅助设备。辅助设备是可选的。然而，国家或国际法规可能会强制规定与水表使用相关的一些辅助装置。 ISO 4064-5:2014的建议适用于水表，与技术无关，定义为集成测量仪器，持续测定流经水表的水量。

ISO 4064-5:2014 applies to water meters used to meter the volume of cold potable water and hot water flowing through a fully charged, closed conduit. These water meters incorporate devices which indicate the integrated volume. ISO 4064-5:2014 specifies criteria for the selection of single, combination and concentric water meters, associated fittings, installation, special requirements for meters, and the first operation of new or repaired meters to ensure accurate constant measurement and reliable reading of the meter. In addition to meters based on mechanical principles, ISO 4064-5:2014 also applies to water meters based on electrical or electronic principles, and to water meters based on mechanical principles incorporating electronic devices, used to measure the volume of cold potable water and hot water. It also applies to electronic ancillary devices. Ancillary devices are optional. However, national or international regulations may make some ancillary devices mandatory in relation to the utilization of the water meter. The recommendations of ISO 4064-5:2014 apply to water meters, irrespective of technology, defined as integrating measuring instruments continuously determining the volume of water flowing through them.