Research on the Fluid Capacitance Detector Using the Technology of Capacitance Detecting

摘要

Fluid detection is of great importance in the industrial processes and chemical analysis-reported methods must have the contact with the sample and require a long time to finish the detection. This paper raised a novel method and made a fluid detector to detect fluid by using the capacitance detecting chip AD7745, which can make the detection in a short time. By testing gas, water, and different concentrations of ethanol, we got the results that the detector can effectively distinguish different substances and make the primary quantitative analysis.