GB/T 778.2-2007 in English

《GB/T 778.2-2007封闭满管道中水流量的测量 饮用冷水水表和热水水表 第2部分：安装要求》由TC124（全国工业过程测量控制和自动化标准化技术委员会）归口，主管部门为中国机械工业联合会。
GB/T778的本部分规定了单个水表、复式水表、同轴水表和连接管件的选择、安装,水表的特殊要求以及新水表或修理后水表首次使用的准则,以保证水表准确稳定测量和可靠读数。
GB/T778的本部分也适用于基于电或电子原理以及基于机械原理带电子装置、用于计量饮用冷水和热水实际体积流量的水表。本部分还适用于电子辅助装置。
GB/T778的本部分的建议适用于被定义为积算计量仪表、采用任何技术连续测定流过的水体积的水表。

Scope

This part of GB/T 778 specifies the selection and installation of single water meters, multi-type water meters, coaxial water meters and connecting pipe fittings, the special requirements of water meters, and the guidelines for the first use of new water meters or repaired water meters, so as to ensure accurate, stable and reliable measurement of water meters. reading. This part of GB/T 778 is also applicable to water meters based on electrical or electronic principles and based on mechanical principles with electronic devices for measuring the actual volume flow of drinking cold water and hot water. This section also applies to electronic auxiliary devices. The recommendations in this part of GB/T 778 apply to water meters defined as totalizing meters that use any technique to continuously measure the volume of water flowing through them.