专利名称：Method and means for detecting the onset
of flooding of ultrasonic atomisers
发明人：WILSON, ROBERT F.申请号：EP95105027.7申请日：19950404公开号：EP0677335A3公开日：19970521
摘要：The detection system monitors the natural resonance frequency of theultrasonic transducer (5), to detect a frequency variation indicating an overflow of thevaporisation surface, to provide a corresponding output signal. The signal representingthe resonance frequency of the ultrasonic transducer is fed to a peak value detector (20)with a memory function, allowing comparison of the actual signal value with the storedvalue, to provide an overflow output signal when the difference between the comparedsignals indicates a given decrease rate in the resonance frequency.
申请人：FIRMA J. EBERSPAECHER
地址：Eberspächerstrasse 24 D-73730 Esslingen DE
国籍：DE
代理机构：Klunker . Schmitt-Nilson . Hirsch
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