Abstract: 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.

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。