Gas Density Sensor for Real-Time Monitoring in a High Pressure Reactor
Sprache des Titels:
Proceedings of the Eurosensors XXIII conference
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.