›› 2013, Vol. 26 ›› Issue (12): 75-.

• 论文 • 上一篇    下一篇



  1. (华北电力大学 电气与电子工程学院,河北 保定 071003)
  • 出版日期:2013-12-15 发布日期:2014-01-10
  • 作者简介:范寒柏(1963—),男,副教授,硕士生导师。研究方向:超声波测量,小信号检测。E-mail:hanbaifan@yahoo.com.cn

Design and Implementation of Seven-electrode Conductivity Sensor Measurement Circuit

 FAN Han-Bai, HU Yang, DANG Wu-Song   

  1. (School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China)
  • Online:2013-12-15 Published:2014-01-10



关键词: 七电极电导率传感器, 电路设计, 电导率测量


The fast and accurate conductivity measurement is of great significance in marine research and environmental protection.The article describes the basic principles and characteristics of the seven electrode conductivity sensor,and designs a fast measurement circuit with low temperature drift and high accuracy based on of the physical characteristics of the sensor itself as well as the requirements for high-precision measurement.D/A and A/D integrated circuit chips are used for precise sensor driving and high-speed sampling.The driving frequency and voltage are more accurate and easier to adjust than those of the traditional circuits,while the high-speed sampling avoids signal distortion in conditioning process.The effect of measurement is verified by experiments.

Key words: seven electrode conductivity sensor;circuit design;conductivity measurement


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