The Design of Moisture Content of Lubricating Oil Detecting System Based on AD5933

Abstract:

In order to detect lubricating oil moisture content quickly, and replace lubricating oil of equipment in time , impedance type moisture content of lubricating oil detecting system based on AD5933 and cylindrical coaxial capacitive sensor are explored. The paper selected the excitation voltage amplitude and frequency reasonably, and studied the relationship between water content of lubricating oil and impedance value. The result suggests that when the excitation voltage amplitude is 2V, the frequency ranges from 4 kHz to 6 kHz, moisture content of lubricating oil is closely related to impedance value and lubricating oil resistance value decreases with the increase of its moisture content. In addition, the mathematical model between moisture content of lubricating oil and the impedance value is established, moisture content of lubricating oil can be calculated according to the impedance value.

• Periodical: Applied Mechanics and Materials (Volumes 401-403)
• Pages: 1129-1134
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.401-403.1129
• Online since: September 2013
• Authors: Qiang Liao, Wei Dong Fan, Jiang Wu, Tao Xu
• Keywords: AD5933, Capacitive Sensor, Impedance Method, Lubricating Oil

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