The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Bernhard Jakoby - One of the best experts on this subject based on the ideXlab platform.
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real time monitoring of a high pressure reactor using a Gas Density sensor
Sensors and Actuators A-physical, 2010Co-Authors: Johannes K. Sell, A.o. Niedermayer, S. Babik, Bernhard JakobyAbstract:Abstract We investigate a Gas Density sensor based on quartz crystal resonators for high pressure ( 2.5 × 1 0 6 Pa ) and high temperature ( 340 K ) 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.
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Gas Density sensor for real-time monitoring in a high pressure reactor
Procedia Chemistry, 2009Co-Authors: Johannes K. Sell, A.o. Niedermayer, S. Babik, Bernhard JakobyAbstract:Abstract We present the design of a Gas Density sensor based on quartz crystal resonators for high pressure (2.5 × 10 6 Pa) and high temperature (340 K) application. Tunning 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 aremore suitable for viscosity measurement. In high pressure Gases, an additional pressure dependent frequently shift has to be considered.
Johannes K. Sell - One of the best experts on this subject based on the ideXlab platform.
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real time monitoring of a high pressure reactor using a Gas Density sensor
Sensors and Actuators A-physical, 2010Co-Authors: Johannes K. Sell, A.o. Niedermayer, S. Babik, Bernhard JakobyAbstract:Abstract We investigate a Gas Density sensor based on quartz crystal resonators for high pressure ( 2.5 × 1 0 6 Pa ) and high temperature ( 340 K ) 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.
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Gas Density sensor for real-time monitoring in a high pressure reactor
Procedia Chemistry, 2009Co-Authors: Johannes K. Sell, A.o. Niedermayer, S. Babik, Bernhard JakobyAbstract:Abstract We present the design of a Gas Density sensor based on quartz crystal resonators for high pressure (2.5 × 10 6 Pa) and high temperature (340 K) application. Tunning 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 aremore suitable for viscosity measurement. In high pressure Gases, an additional pressure dependent frequently shift has to be considered.
Ludger Ullrich - One of the best experts on this subject based on the ideXlab platform.
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a precise and robust quartz sensor based on tuning fork technology for sf6 Gas Density control
Sensors and Actuators A-physical, 2000Co-Authors: Dieter Zeisel, Hans Menzi, Ludger UllrichAbstract:Abstract A novel sensor technology for measuring and monitoring Gas Density is described. The Gas Density sensor is self-calibrating and specifically designed to operate as a sulfur hexafluoride (SF6) monitor and control device in Gas insulated high-voltage switchgears (GIS), but can also be applied for Density measurement of any kind of Gas. It comprises a pair of tuning forks oscillating at their resonance frequency. One oscillator is exposed to the Gas to be monitored, the other one is used for comparison and temperature compensation. Exposure to Gas leads to a shift in the resonance frequency proportional to the Gas Density. A Density standard based on a combined weight and mass measurement has been performed with a precision better than 0.02%, giving proof of exact sensor calibration. The Gas Density sensor works with a precision better than 0.5% over a range of 50 kg/m3 SF6 Gas Density. Sensor response time is less than 50 ms. The real Gas equation of Beattie and Bridgman fits the gauged values with a mean error of 0.125%.
S. Babik - One of the best experts on this subject based on the ideXlab platform.
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real time monitoring of a high pressure reactor using a Gas Density sensor
Sensors and Actuators A-physical, 2010Co-Authors: Johannes K. Sell, A.o. Niedermayer, S. Babik, Bernhard JakobyAbstract:Abstract We investigate a Gas Density sensor based on quartz crystal resonators for high pressure ( 2.5 × 1 0 6 Pa ) and high temperature ( 340 K ) 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.
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Gas Density sensor for real-time monitoring in a high pressure reactor
Procedia Chemistry, 2009Co-Authors: Johannes K. Sell, A.o. Niedermayer, S. Babik, Bernhard JakobyAbstract:Abstract We present the design of a Gas Density sensor based on quartz crystal resonators for high pressure (2.5 × 10 6 Pa) and high temperature (340 K) application. Tunning 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 aremore suitable for viscosity measurement. In high pressure Gases, an additional pressure dependent frequently shift has to be considered.
A.o. Niedermayer - One of the best experts on this subject based on the ideXlab platform.
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real time monitoring of a high pressure reactor using a Gas Density sensor
Sensors and Actuators A-physical, 2010Co-Authors: Johannes K. Sell, A.o. Niedermayer, S. Babik, Bernhard JakobyAbstract:Abstract We investigate a Gas Density sensor based on quartz crystal resonators for high pressure ( 2.5 × 1 0 6 Pa ) and high temperature ( 340 K ) 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.
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Gas Density sensor for real-time monitoring in a high pressure reactor
Procedia Chemistry, 2009Co-Authors: Johannes K. Sell, A.o. Niedermayer, S. Babik, Bernhard JakobyAbstract:Abstract We present the design of a Gas Density sensor based on quartz crystal resonators for high pressure (2.5 × 10 6 Pa) and high temperature (340 K) application. Tunning 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 aremore suitable for viscosity measurement. In high pressure Gases, an additional pressure dependent frequently shift has to be considered.
