Liquid quantity measuring apparatus
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United States of America Patent
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-
Mar 6, 1984
Grant Date -
N/A
app pub date -
Nov 5, 1981
filing date -
Sep 25, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for measuring the quantity of a liquid such as a fuel in a tank, which comprises liquid level measuring electrodes, comparing electrodes dipped always in the liquid to detect the capacitance inherent to the liquid, an LC oscillator for converting each capacitive value measured by the electrodes into a corresponding frequency signal, reference electrodes constituting a level feeder together with the oscillator to compensate for capacitive variation of the latter, and a microcomputer for calculating a liquid quantity in the tank based on the frequency signals and for displaying the calculated quantity.
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