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The Fabrication and Experiment of a Four-Electrode Conductivity Sensor for Fresh Water

机译:淡水四电极电导率传感器的制作与实验

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In this paper, a new four-electrode sensor for fresh water conductivity measurements is presented.The measurement system includes two parts: a four-electrode conductivity sensor unit and an integrated measuring circuit. The distribution of a four-electrode in electric field and the size of four electrodes are simulated by ANSYS - the MEMS simulation tool. The prototype of the conductivity sensor, with a four-electrode (each electrode is measuring 6mm×2mm or smaller), was fabricated on a PCB. The conductivity of a tested sample could be obtained according to output of the amplifier by calibrating the voltage of the conductivity of the standard liquid. The voltages of the conductivities, in the range from 0.34V to 9.00V, are detected by an oscillograph. This test result proves that it is promising to measure conductivity of fresh water utilizing the sensor based on the four-electrode system.
机译:本文介绍了一种用于淡水电导率测量的新型四电极传感器。该测量系统包括两部分:一个四电极电导率传感器单元和一个集成测量电路。 MEMS仿真工具ANSYS可以模拟电场中四个电极的分布以及四个电极的大小。电导率传感器的原型具有四个电极(每个电极的尺寸为6mm×2mm或更小)在PCB上制造。通过校准标准液体的电导率电压,可以根据放大器的输出获得被测样品的电导率。用示波器检测电导率的电压,范围为0.34V至9.00V。该测试结果证明,利用基于四电极系统的传感器测量淡水的电导率是有希望的。

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