Self test apparatus for ultrasonic sensor
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United States of America Patent
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Jul 4, 1995
Grant Date -
N/A
app pub date -
Aug 30, 1993
filing date -
Aug 30, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ultrasonic liquid level sensor includes an ultrasonic coupling element for use in self testing. The sensor includes a gap and a pair of transducers spaced apart by the gap. The sensor senses presence of liquid in the gap. The ultrasonic coupling element extends between the transducers and acoustically couples them together. The coupling element is used to test ultrasonic sensor integrity.
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