内容简介
JJF（冀）136-2017标准表法液化天然气加气机检定装置
Master Meter Method Verification Deviceof Liquefied Natural Gas Dispenser
2017-12-31实施
2017-10-23发布
目 录
目 录 .........................................................................................................................1
引 言 .........................................................................................................................1
1 范围 ...........................................................................................................................1
2 引用文件 ...................................................................................................................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 .....................................................................................................................2
4.2 原理 .....................................................................................................................2
5 计量特性 ...................................................................................................................3
5.1 扩展不确定度 .....................................................................................................3
5.2 重复性 .................................................................................................................3
5.3 流量范围 .............................................................................................................3
5.4 密封性 .................................................................................................................3
6 校准条件 ...................................................................................................................3
6.1 校准装置要求 .....................................................................................................3
6.2 校准介质 .............................................................................................................4
6.3 校准环境条件 .....................................................................................................4
7 校准项目和校准方法 ...............................................................................................4
7.1 校准项目 .............................................................................................................4
7.2 校准方法 .............................................................................................................4
8 校准结果表达 ...........................................................................................................7
8.1 示值误差 .............................................................................................................7
8.2 重复性 .................................................................................................................8
8.3 不确定度 .............................................................................................................8
9 复校时间间隔 .........................................................................................................10
附录 A 校准记录参考格式....................................................................................... 11
附录 B 校准证书内页参考格式...............................................................................12
附录 C 不确定度分析示例.......................................................................................13