Ultrasound sensor for detecting the level of liquids
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United States of America Patent
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Aug 14, 2001
Grant Date -
N/A
app pub date -
May 12, 1999
filing date -
Sep 15, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An ultrasonic liquid level detector includes a detector case (1), a rod acoustic waveguide (2) on one end of which there is an acoustical-electrical transducer (3) and on the other end a hollow resonator (4). The resonator (4) space is isolated from an external medium. The detector case (1) is fixed rigidly and hermetically on the surface of the rod acoustic waveguide (2) in a zone of minimum rod oscillations of the rod acoustic waveguide at operating detector frequency and contains an attachment means for attaching the detector to an external base.
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