JJF（冀）109-2012
定氮仪校准规范
Calibration Specification forNitrogen Analyzer
2012-03-31 发布
2012-06-01 实施
目 录
引言 ................................................................1
1范围.............................................................1
2 概述 ...............................................................1
3 计量特性..............................................................1
3.1温度示值误差.......................................1
3.2 温场均匀性..........................................................1
3.3 仪器示值误差.........................................................1
3.4 仪器示值重复性 ......................................................1
4 校准条件..............................................................1
4.1 环境条件..............................................................1
4.2 测量标准及其他设备 .............................................1
5校准项目和校准方法 .................................2
5.1 温度示值误差和温场均匀性 ..............................................2
5.2仪器示值误差..........................................................2
5.3 重复性 .........................................................3
6校准结果表达................................................4
7 复校时间间隔 ............................................................4
附录A 定氮仪标准物质的干燥条件........................................5
附录B校准记录格式.......................................................6
附录C校准证书（内页）格式..............................................8
附录D定氮仪示值误差校准结果的不确定度评定...........................9