|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|749218||894815||2010||5 صفحه PDF||سفارش دهید||دانلود رایگان|
We investigate a gas density sensor based on quartz crystal resonators for high pressure (2.5×106Pa) and high temperature (340K) application. The suitability of tuning fork resonators for density measurement in pure gases has been demonstrated. Furthermore, thickness shear-mode resonators are commonly used for viscosity and density measurement in liquids. In our contribution, these devices are compared with respect to their sensitivity to gas density for the target application in a polymerization reactor, involving high ambient pressures. It was confirmed, that tuning fork resonators are mainly sensitive to density, whereas shear-mode resonators are more suitable for viscosity measurement. Moreover, a density sensor for density measurements in unknown gases and gas mixtures, based on two tuning forks, is presented. At high pressures, an additional pressure-dependent frequency shift has to be considered.
Journal: Sensors and Actuators A: Physical - Volume 162, Issue 2, August 2010, Pages 215–219