库仑测硫仪校准方法研究  

Study on Calibration Method of Coulometric Sulfur Analyzers

作　　者：王志鹏[1] 郭知明[1] Wang Zhipeng;Guo Zhiming(Tianjin Institute of Metrological Supervision Testing,Tianjin,300192,China)

机构地区：[1]天津市计量监督检测科学研究院,天津300192

出　　处：《仪器仪表用户》2020年第5期19-21,共3页Instrumentation

摘　　要：石油产品中的硫含量是产品质量的重要指标,石油化工企业多使用库仑测硫仪来测定石油中的硫含量。目前,国内并无库仑测硫仪的校准规范,仪器的量值缺少溯源方法。结合实际计量工作,探讨了示值误差、测量重复性及示值漂移的校准方法;分析了测量不确定度来源,探讨了测量不确定度评定的一般方法,提出了减小不确定度的相关措施,为优化测量提供了指导。Sulfur content in petroleum products is an important indicator of product quality,coulometric sulfur analyzer is used by petrochemical enterprises to determine the sulfur content in petroleum.At present,there is no calibration specification for coulometric sulfur analyzer,the value of instruments is lack of traceability method.Based on the actual measurement work,it discussed the calibration method of indication error,measurement repeatability and indication drift.It analyzed the source of measurement uncertainty,the general method of measurement uncertainty evaluation is discussed,and relevant measures to reduce the uncertainty were proposed to provide guidance for optimizing the measurement.

关 键 词：库伦测硫仪 校准 示值误差 测量重复性 不确定度 

分 类 号：TE65[石油与天然气工程—油气加工工程]