Research on Accelerated Method for Electrochemical Acidity Sensor Monitoring

Oil monitoring is an important way to judge oil quality, and acidity is one of the important indicators for monitoring oil. In this study, a novel electrochemical acidity sensor was developed in which a hydrophilic glass electrode was used as the working electrode and a pure silver electrode was used as the reference electrode. The acidity of the oil is expressed in the form of voltage by a high impedance voltmeter. In the process of oil monitoring, it takes too much time to stabilize the voltage data, which does not meet the needs of real-time monitoring. Therefore adding an accelerator to the oil makes the measurement results be obtained faster. Iron powder, potassium chloride powder, and iron acetylacetonate powder were used in this study. The research results show that the electrical conductivity of the oil increases to a certain extent after adding the accelerator, and the acidity of the oil can be monitored in a short time. Adding 3mg of iron acetylacetonate powder per 50ml of oil has the best effect.