Title:Gas Density Sensor for Real-Time Monitoring in a High Pressure ReactorAuthor(s):Johannes Kilian Sell,  Alexander Niedermayer,  Sebastian Babik,  Bernhard JakobyAbstract:We present the design of a gas density sensor based on quartz crystal resonators for high pressure (2.5 x 10^6 Pa) and high temperature (340 K) application. Tuning fork resonators have successfully been used in gas density measurements. In our contribution tuning fork and thickness-shear mode devices are compared with respect to their sensitivity to gas density. It was confirmed, that tuning fork resonators are mainly sensitive to density, whereas shear-mode resonators are more suitable for viscosity measurement. In high pressure gases, an additional pressure dependent frequency shift has to be considered.Booktitle:Proceedings of the Eurosensors XXIII conferencePage Reference:4 page(s)Publishing:2009

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