煤气表.转换装置.能量转换

标准编号：BS EN 12405-2-2012

提出单位：BSI

起草单位：BSI

发布日期：2012年

实施日期：20120831

主      题：热值 合格试验 变换 换算(计量单位) 定义(术语) 设计 电气工程 电子仪器 电子测量装置 能量 能量转换 流量测量 燃料气体 煤气表 燃气技术 仪表用变压器 特性 量转换器 安全性 规范(验收) 试验 转换器 发射机 

中国标准分类号：Q82

国际标准分类号：91_140_40

摘      要：This European Standard specifies the requirements and tests for the construction, performance, safety and conformity of conversion devices used to determine the energy of fuel gases described in the Table 1, including those of the 1st and 2nd families according to EN 437. The energy conversion device (ECD) considered in this standard consists of an energy calculator (EC) and is associated with the following devices and/or functions: - a volume conversion device (VCD) or a flow computer used as gas meter conversion, either conforming to EN 12405-1, or to prEN 12405-3, for high accuracy measurements; - a calorific value determination device (CVDD). Requirements for type approval tests of the devices, not included in the above-mentioned standards are described in appropriate annexes specified in Table 6. For the purpose of this European Standard, the term volume conversion devices (VCDs) includes flow computers (FCs). A single calculator may undertake the volume conversion functions for different metering lines.