电磁感应式电导率传感器多参数性能研究

Research on Multiparameter Performance of Type Inductive Conductivity Sensor

电磁感应式电导率传感器(Type Inductive Conductivity Sensor,TICS)自身探测结构的不外露,可以避免磁芯线圈的腐蚀,提高海水电导率探测的稳定性。但是感应式电导率传感器磁芯的相对磁导率不仅受到外界温度和压力的影响,其随工作频率的增加也会有很大的衰减,导致输出信号过小,分辨率降低。本文首先对感应式探头的物理结构参数、输入信号参数进行理论分析,根据理论分析的结构参数,定制了感应式探头,最后经过实验论证,得出了探头结构参数、工作信号参数的选择依据,可以更好地提高输出信号的准确度与分辨率。

The detection structure of type inductive conductivity sensor(TICS) is not exposed, which can avoid the corrosion of core coil and improve the stability of seawater conductivity detection. However, the relative permeability of the magnetic core of inductive conductivity sensor is not only affected by external temperature and pressure, but also attenuates greatly with the increase of working frequency, resulting in a low output signal and reduced resolution. This paper analyzes the physical structure parameters and input signal parameters of the induction probe theoretically. Then the induction probe is customized according to the structural parameters of theoretical analysis. Through experimental demonstration, the selection basis of structural parameters and working signal parameters of the probe are obtained, which can improve the accuracy and resolution of output signal better.