Multi-level probe and system for measurement of physical conditions in liquid-containing tanks
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United States of America Patent
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Jun 9, 1992
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N/A
app pub date -
Jun 8, 1990
filing date -
Jun 8, 1990
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Abstract
A multi-level probe for sonic range measurements utilizes a plurality of parallel reflectors that each include an opening arranged coaxially about a beam of ultrasonic energy transmitted along a reference axis from an associated transducer. The opening in each reflector permits most of the sonic energy to pass to a subsequent reflective surface, while the periphery about the opening provides echo signals for determining physical conditions in the environment through which the sonic energy has passed. A novel system is used for determining physical conditions that are a function of time differences between signals from different reflectors, calculated with a highly efficient digital signal processing algorithm.
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