内容简介
JJG（鲁）65-2021热量表检定装置
Verification Facilities for Heat Meters
2021-12-10实施
2021-12-04发布
目 录
引言..........................................................................................................................................1
1 范围..........................................................................................................................................1
2 引用文献..................................................................................................................................1
3 术语和计量单位......................................................................................................................1
3.1 术语 .....................................................................................................................................1
3.2 计量单位...............................................................................................................................2
4 概述..........................................................................................................................................2
4.1 构造组成...............................................................................................................................2
4.2 工作原理...............................................................................................................................3
5 计量性能要求..........................................................................................................................7
5.1 流量测量范围.......................................................................................................................7
5.2 热量表检定装置准确度.......................................................................................................7
5.3 流体介质温度稳定性...........................................................................................................7
5.4 热水流量标准装置的主标准器...........................................................................................8
5.5 热水流量标准装置的配套仪表...........................................................................................8
5.6 其它配套计量器具...............................................................................................................8
6 通用技术要求..........................................................................................................................9
6.1 外观..................................................................................................................................... 9
6.2 热水流量标准装置密封性...................................................................................................9
6.3 计算与控制软件要求...........................................................................................................9
6.4 安全防护...............................................................................................................................9
6.5 接管内径与直管段要求.....................................................................................................10
6.6 热量表检定装置的基本配置.............................................................................................10
7 计量器具控制........................................................................................................................10
7.1 检定条件.............................................................................................................................10
7.2 检定项目和方法.................................................................................................................10
7.3 检定结果处理.....................................................................................................................21
7.4 检定周期............................................................................................................................21
附录 A 热系数及比焓值公式.................................................................................................22
附录 B 常用流量及流量传感器连接尺寸参照表.................................................................24
附录 C 标准铂电阻温度计计算公式.....................................................................................25
附录 D 检定证书内页格式.....................................................................................................26