6线制测量与已埋差动电阻式仪器鉴定

Six-wires Measurement and Appraisal of the Embedded Differential Resistor Sensor

结合常规测量误差的来源分析,介绍了一种能有效减少误差影响、采用恒流源并结合内部多路开关进行数字采样的6线制电阻比测量方法;按不同接线仪器分别提出了不同的鉴定项目;参考规范要求,提出了具体的质量控制标准,可供大坝安全监测人员参考。

This paper introduces a resistor-ratio measuring method, which can decrease the measurement error by using constant current circuit and multiplex switches combined 6-wires. According to the type of sensors, different appraisal items are proposed. Based on the criterion, a material quality-control standard is proposed for dam monitoring technicians＇ reference.