再谈差阻式仪器电阻比测量误差的分析方法  

Further discussion on the analysis method of resistance ratio error of Carlson transducer

作　　者：江晓明 

机构地区：[1]大唐南京环保科技有限责任公司,江苏南京211100

出　　处：《大坝与安全》2012年第6期27-32,共6页Dam & Safety

摘　　要：指出了规范中电阻比测值质量控制方法的不足,提出了电阻比测量误差的新的数学表达式,分析了差阻式仪器电阻比的特性,比较了计算电阻比测量误差的多种方法,并对现行规范给出了修改建议。五芯或三芯、四芯差阻式仪器,都可以用正反测电阻比之和来判别电阻比测值的准确性,也可以用正反测电阻比乘积来判别电阻比测值的准确性,后者更合理。The quality control method of resistance ratio of Carlson transducer has been written into the specification and has played a positive role. This paper points out the shortcomings, puts forward a new expression to resistance ratio error, analyzes the resistance ratio characteristics, compares the methods to calculate the resistance ratio error and gives a recommendations to modify the current specification. The resistance ratio accuracy of five-core or three-core or four-core Carlson transducer can be judged by use of the sum of pro and con resistance ratio, as well as the product, in which the latter is more reasonable.

关 键 词：安全监测 差阻式仪器 电阻比 质量控制 误差 

分 类 号：TV698.1[水利工程—水利水电工程]