用于冷饮水和热水的水表 - 第4部分:Iso 4064-1中未涵盖的非计量要求

[中文适用范围]： 本文件适用于计量冷水和热水流经充满、关闭导管的水量表。这些水表包含指示累积体积的装置。本文件规定了冷水和热水表的技术特性及压降要求。它适用于可以承受以下条件的水表：a) 最大允许压力 (MAP) 至少为 \(1 \mathrm{MPa}^{1}\) [对于DNs \(\geq 500 \mathrm{~mm}\) 的水表，MAP 为 0,6 MPa]; b) 冷水表的最大允许温度 (MAT) 为 \(30^{\circ} \mathrm{C}\); c) 热水表的 MAT 最高为 \(180^{\circ} \mathrm{C}\)，具体取决于类别。本文件还适用于基于机械、电气或电子原理制造的水表，以及包含电子装置的机械原理水表，用于计量冷水和热水的体积流量。它也适用于电子辅助设备。通常，辅助设备是可选的。然而，国家或国际法规可能使某些辅助设备成为强制性的与水表的使用有关。 [外文原描述]： This document 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. This document specifies technical characteristics and pressure loss requirements for meters for cold potable water and hot water. It applies to water meters which can withstand: a) a maximum admissible pressure (MAP) equal to at least 1 MPa 1) [0,6 MPa for meters for use with pipe nominal diameters (DNs) ≥500 mm]; b) a maximum admissible temperature (MAT) for cold potable water meters of 30 °C; c) a MAT for hot water meters of up to 180 °C, depending on class. In addition to meters based on mechanical principles, this document also applies to water meters based on electrical or electronic principles, and to water meters based on mechanical principles incorporating electronic devices, used to meter the volume flow of hot water and cold potable water. It also applies to electronic ancillary devices. As a rule ancillary devices are optional. However, national or international regulations may make some ancillary devices mandatory in relation to the utilization of the water meter. 1) 1 MPa = 10 bar (1 bar = 0,1 MPa =10 5 Pa; 1 MPa = 1 N/mm 2 ).