JJF（冀） 177-2020 带流量计的气体减压器校准规范
简介
JJF（冀） 177-2020
带流量计的气体减压器校准规范
Calibration Specification for Pressure Regulators with Flowmeter
2020-11-30实施
2020-09-01 发布 目 录 引言 .................................................................................................................................... (1 ) 1范 围 ................................................................................................... (1) 2引 用 文件 ............................................................................................ (1) 3 概述 ..................................................................................................................................... (1) 4 计量特性 ............................................................................................................................ (1) 4.1 压力表示值误差 .............................................................................................................. (1) 4.2 压力表回程误差 .............................................................................................................. (2) 4.3 压力表轻敲位移 .............................................................................................................. (2) 4.4 压力表指针偏转平稳性 .................................................................................................. (2) 4.5 流量计准确度等级 .......................................................................................................... (2) 4.6 流量计最大允许误差 ...................................................................................................... (2) 4.7 流量计回差 ...................................................................................................................... (2) 4.8 减压器流量计调节范围 .................................................................................................. (2) 4.9 密封性 .............................................................................................................................. (2) 4.10 安全阀 ............................................................................................................................ (2) 5 校准条件 ............................................................................................................................ (2) 5.1 环境条件 ......................................................................................................................... (2) 5.2 校准用设备 ..................................................................................................................... (3) 6 校准项目和校准方法 ........................................................................................................ (3) 6.1 外观 .................................................................................................................................. (3) 6.2 压力表示值误差 .......................................................................................................... (3) 6.3 压力表回程误差 .............................................................................................................. (3) 6.4 压力表轻敲位移 .............................................................................................................. (2) 6.5 压力表指针偏转平稳性 .................................................................................................. (3) 6.6 流量计示值误差 .............................................................................................................. (3) 6.7 流量计回差 ...................................................................................................................... (4) 6.8 减压器流量计调节范围 .................................................................................................. (4) 6.9 减压器密封性 .................................................................................................................. (4) 6.10 安全阀 ............................................................................................................................ (4) 7 校准结果的表达 ................................................................................................................ (4) 8 复校时间间隔 .................................................................................................................... (4) 附录 A 原始记录格式 ........................................................................................................ (5) 附录 B 校准证书内容及内页格式…… ....................................................................... …(6) 附录 C 压力不确定度分析评定示例 ............................................................................ …(7)
JJF（冀） 177-2020
带流量计的气体减压器校准规范
Calibration Specification for Pressure Regulators with Flowmeter
2020-11-30实施
2020-09-01 发布 目 录 引言 .................................................................................................................................... (1 ) 1范 围 ................................................................................................... (1) 2引 用 文件 ............................................................................................ (1) 3 概述 ..................................................................................................................................... (1) 4 计量特性 ............................................................................................................................ (1) 4.1 压力表示值误差 .............................................................................................................. (1) 4.2 压力表回程误差 .............................................................................................................. (2) 4.3 压力表轻敲位移 .............................................................................................................. (2) 4.4 压力表指针偏转平稳性 .................................................................................................. (2) 4.5 流量计准确度等级 .......................................................................................................... (2) 4.6 流量计最大允许误差 ...................................................................................................... (2) 4.7 流量计回差 ...................................................................................................................... (2) 4.8 减压器流量计调节范围 .................................................................................................. (2) 4.9 密封性 .............................................................................................................................. (2) 4.10 安全阀 ............................................................................................................................ (2) 5 校准条件 ............................................................................................................................ (2) 5.1 环境条件 ......................................................................................................................... (2) 5.2 校准用设备 ..................................................................................................................... (3) 6 校准项目和校准方法 ........................................................................................................ (3) 6.1 外观 .................................................................................................................................. (3) 6.2 压力表示值误差 .......................................................................................................... (3) 6.3 压力表回程误差 .............................................................................................................. (3) 6.4 压力表轻敲位移 .............................................................................................................. (2) 6.5 压力表指针偏转平稳性 .................................................................................................. (3) 6.6 流量计示值误差 .............................................................................................................. (3) 6.7 流量计回差 ...................................................................................................................... (4) 6.8 减压器流量计调节范围 .................................................................................................. (4) 6.9 减压器密封性 .................................................................................................................. (4) 6.10 安全阀 ............................................................................................................................ (4) 7 校准结果的表达 ................................................................................................................ (4) 8 复校时间间隔 .................................................................................................................... (4) 附录 A 原始记录格式 ........................................................................................................ (5) 附录 B 校准证书内容及内页格式…… ....................................................................... …(6) 附录 C 压力不确定度分析评定示例 ............................................................................ …(7)
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