Apparatus and method for determining a level of a fluid surface in a fluid container
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United States of America Patent
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Oct 16, 2018
Grant Date -
Mar 23, 2017
app pub date -
May 26, 2015
filing date -
May 27, 2014
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Abstract
A fluid level sensor may include a first sound transducer, a second sound transducer, a reference element, a first deflection element, and a control unit. The reference element may be disposed at a predetermined distance from the second sound transducer and arranged in a fluid space of the fluid container. The first deflection element may be arranged in the fluid space to deflect the second sound signals by a first predetermined angle toward the fluid surface. The control unit may establish a speed of sound within a fluid in the fluid space based at least in part on the second sound signals and establish the level of the fluid surface over a base portion of the fluid container based at least in part on the first sound signals, the second sound signals, and the speed of sound within the fluid.
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