title: A Quartz Crystal Microbalance dew point sensor without frequency measurement.
abstract: This work deals with the design of a dew point sensor based on Quartz Crystal Microbalance (QCM) without measuring the frequency. This idea is inspired by the fact that the Colpitts oscillation circuit will stop oscillating when the QCM works in the liquid media. The quartz crystal and the electrode are designed through the finite element simulation and the stop oscillating experiment is conducted to verify the sensibility. Moreover, the measurement result is calibrated to approach the true value. At last a series of dew points at the same temperature is measured with the designed sensor. Results show that the designed dew point sensor is able to detect the dew point with the proper accuracy.
authors.affiliation: School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.
authors.forename: Guohua
authors.initials: G
authors.lastname: Wang
authors.affiliation: School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.
authors.forename: Weishuo
authors.initials: W
authors.lastname: Zhang
authors.affiliation: School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.
authors.forename: Shuo
authors.initials: S
authors.lastname: Wang
authors.affiliation: School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China.
authors.forename: Jinglin
authors.initials: J
authors.lastname: Sun
mesh_terms: D006813:Humidity; D058525:Quartz Crystal Microbalance Techniques / Q000295:instrumentation* / Q000379:methods*