CAPACITIVE LIQUID LEVEL DETECTION DEVICE

Provided is a capacitive liquid level detection device capable of determining liquid level and liquid quality. This detection device comprises a plurality of electrode pairs disposed at different positions in a height direction in a tank for storing liquid; a measuring instrument for acquiring value...

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Bibliographic Details
Main Authors SAITOU YUUKI, SHIBATA TETSUYOSHI, KAWADE KEISUKE, MURAMATSU ATSUSHI
Format Patent
LanguageEnglish
Published 11.02.2016
Subjects
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
TESTING
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Summary:Provided is a capacitive liquid level detection device capable of determining liquid level and liquid quality. This detection device comprises a plurality of electrode pairs disposed at different positions in a height direction in a tank for storing liquid; a measuring instrument for acquiring values equivalent to capacitance between respective electrode pairs of the plurality of electrode pairs; a storage part for storing a plurality of threshold values determined based on values equivalent to capacitance between one of the electrode pairs in the presence of the air or a plurality of kinds of liquids; and a determination part comparing the values equivalent to capacitance between the respective electrode pairs with each of the threshold values, and the determination part determines for determining liquid level corresponding to liquid quality based on the comparison result.
Bibliography:Application Number: US201514886178