A precise and robust quartz sensor based on tuning fork technology for (SF6)-gas density control
作者： Dieter Zeisel , Hans Menzi , Ludger Ullrich
DOI: 10.1016/S0924-4247(99)00345-3
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摘要: Abstract A novel sensor technology for measuring and monitoring gas density is described. The self-calibrating specifically designed to operate as a sulfur hexafluoride (SF 6 ) monitor control device in insulated high-voltage switchgears (GIS), but can also be applied measurement of any kind gas. It comprises pair tuning forks oscillating at their resonance frequency. One oscillator exposed the monitored, other one used comparison temperature compensation. Exposure leads shift frequency proportional density. standard based on combined weight mass has been performed with precision better than 0.02%, giving proof exact calibration. works 0.5% over range 50 kg/m 3 SF Sensor response time less ms. real equation Beattie Bridgman fits gauged values mean error 0.125%.
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