Method and apparatus for ultrasonic interface detection

An unloaded ultrasonic horn assembly is driven at its resonant frequency. As the horn encounters an interface and becomes loaded a feedback signal representative of this fact is generated. An output signal responsive to the loss of the feedback signal provides an indication of the encountering of th...

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Bibliographische Detailangaben
Hauptverfasser:	STAUNTON, HAROLD FRANCIS, KOHLI, CHHAYA KULKARNI, CHOW, ALLAN TIT-SHING CHOW
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PHYSICS TESTING
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Beschreibung
Zusammenfassung:	An unloaded ultrasonic horn assembly is driven at its resonant frequency. As the horn encounters an interface and becomes loaded a feedback signal representative of this fact is generated. An output signal responsive to the loss of the feedback signal provides an indication of the encountering of the interface.