立式金属罐容量检定中的几个问题探讨  

Discussions on Capacity Verification of Vertical Metal Tanks

作　　者：申建国 王彩琴 刘康禄 孙晓鹏 SHEN Jianguo;WANG Caiqin;LIU Kanglu;SUN Xiaopeng(Thel Second National Metrology Station for Large Volume,Yuncheng 044000,China)

机构地区：[1]国家大容量第二计量站,运城044000

出　　处：《计量科学与技术》2021年第11期40-44,71,共6页Metrology Science and Technology

摘　　要：立式金属罐是强检计量器具,其容量计量的准确性直接关系到贸易双方的经济利益和计量信誉。就影响立式金属罐计量检定准确度的几个因素进行探讨,包括:全站仪测量时入射角度的影响(不能超过60°)、全站仪测量径向偏差的不确定度评定时输入量的相关性;基圆必须围尺测量、圆心及半径拟合计算中异常点的处理。Vertical metal tanks(hereinafter referred to as vertical tanks)are a measurement instrument that requires compulsory verification.The measurement accuracy directly relates to trading parties’economic interests.This paper discusses factors affecting accuracy of volume measurements of vertical metal tanks,including the incident angle’s effect(no more than 60°)in total station surveying,the correlation between inputs in uncertainty evaluation for radial deviation measurements,the strapping method for measuring the base circle,and dealing with the outliers when fitting the measurement center and radius.

关 键 词：立式罐 容量检定 径向偏差 相关系数 拟合半径 异常值 

分 类 号：TB938.3[一般工业技术—计量学]