Self Calibrating Capacitive Fuel Sensor
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United States of America Patent
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Issued Date -
Oct 3, 2013
app pub date -
Mar 15, 2013
filing date -
Mar 27, 2012
priority date (Note) -
Abandoned
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Abstract
A method and apparatus are provided for determining a level of fuel in a tank, comprising determining a dielectric constant of fuel in a tank; measuring a capacitance of an unknown depth of the fuel in the tank; and calculating the depth using the dielectric constant and the capacitance. Embodiments of the apparatus utilize a capacitor plate submerged in the fuel to determine the dielectric constant of the fuel, and then use a plate of a separate capacitor to determine the fuel level, once the dielectric constant is known.
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