大称量电子天平测量不确定度评定  

Evaluation of Measurement Uncertainty of Large Weighing Electronic Balance

作　　者：贾琨 富欣 王倩 JIA Kun;FU Xin;WANG Qian(Jilin Institute of Metrology(Jilin Key Laboratory of Metrology Instrument and Technology),Changchun,Jilin Province,130103 China)

机构地区：[1]吉林省计量科学研究院(吉林省计量测试仪器与技术重点实验室),吉林长春130103

出　　处：《科技资讯》2021年第21期72-74,86,共4页Science & Technology Information

基　　金：省属公益性科研院所基本科研经费项目《砝码质量检测自动化系统研究》(项目编号:GYZX-2020-02)。

摘　　要：该文依据JJF 1847-2020《电子天平校准规范》,对改造后的砝码质量检测自动化系统中的XP26003L型号的电子天平进行校准,测量出每个测量点的示值误差,对各称量点的空载示值误差引入的不确定度、加载时示值误差引入的不确定度、重复性不确定度、偏载不确定度、标准砝码不确定度、空气浮力引起的不确定度、砝码不稳定性引起的不确定度进行详细分析计算,最终得出各称量点的扩展不确定度。According to JJF 1847-2020 Calibration Specification of Electronic Balance,this paper calibrates the XP26003L electronic balance in the reformed weight quality detection automation system.It measures the indication error of each measuring point,the uncertainty introduced by the no-load indication error of each weighing point,the uncertainty introduced by the indication error during loading,the repeatability uncertainty,the off load uncertainty the uncertainty of standard weight,the uncertainty caused by air buoyancy and the uncertainty caused by weight instability are analyzed and calculated in detail,and finally the expanded uncertainty of each weighing point is obtained.

关 键 词：电子天平 天平校准 示值误差 测量不确定度 XP26003L 

分 类 号：TH71[机械工程—测试计量技术及仪器]