Liquid level detector for open vessel and closed vessel

A liquid level detector includes: a detecting element having one surface and the other surface opposite to the one surface, the one surface being opposed to a liquid, while being parallel to a height direction of liquid level; a Peltier element provided on the other surface side of the detecting ele...

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Bibliographic Details
Main Authors Yazaki, Yoshitaro, Shiraishi, Yoshihiko, Gouko, Norio, Saitou, Keita, Harada, Toshikazu, Sakaida, Atusi, Taniguchi, Toshihisa, Tanaka, Yasuhiro
Format Patent
LanguageEnglish
Published 30.10.2018
Subjects
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
TESTING
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Summary:A liquid level detector includes: a detecting element having one surface and the other surface opposite to the one surface, the one surface being opposed to a liquid, while being parallel to a height direction of liquid level; a Peltier element provided on the other surface side of the detecting element; and a control unit performing a detection processing for a liquid level of the liquid. The Peltier element forms a heat flow passing through the detecting element from the other surface to the one surface, toward the liquid or a gas. The control unit calculates a liquid level on the basis of an output value of an electrical signal outputted according to the heat flow passing through the detecting element, and a relationship between an output value of the detecting element and a liquid level.
Bibliography:Application Number: US201415032535