LIQUID LEVEL DETECTION DEVICE - HITACHI HIGH TECH CORP

Title:

LIQUID LEVEL DETECTION DEVICE

Document Type and Number:

WIPO Patent Application WO/2020/040239

Kind Code:

A1

Abstract:

Provided is a liquid level detection device capable of accurately detecting an interface inside a container regardless of the type of a separator or the state of the interface. This liquid level detection device 100 is configured to have: an irradiation unit 110 which irradiates a side surface of a sample container 200, containing a sample having layers 210, 220, 300, with light; a light receiving unit 120 that receives transmitted light from the sample container; an analysis unit 130 that acquires the interfaces between the layers from the received amount of the transmitted light; a first drive unit 150 that moves the sample container vertically relative to the irradiation unit and the light receiving unit; a second drive unit 160 that moves the sample container in the circumferential direction of the sample container relative to the irradiation unit and the light receiving unit; and a control unit 170 that controls the first and second drive units, wherein the second drive unit is controlled so that the light receiving unit receives the transmitted light at first and second irradiation angles, and the interfaces between the layers are acquired on the basis of the received amounts of transmitted light at the first and second irradiation angles.

More Like This:

WO/2023/227478	IMPROVED OPERATING METHOD FOR A CONTAINER HANDLING OR CONTAINER CONVEYING DEVICE
JPS60188819	LIQUID LEVEL DETECTING DEVICE

Inventors:

SATO FUMIYASU (JP)
KAKUNO MASAHITO (JP)
SHIMANE NOBUYOSHI (JP)

Application Number:

PCT/JP2019/032744

Publication Date:

February 27, 2020

Filing Date:

August 22, 2019

Export Citation:

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Assignee:

HITACHI HIGH TECH CORP (JP)

International Classes:

G01F23/292; G01N35/10

Foreign References:

JP5993388B2	2016-09-14
JP2012173226A	2012-09-10

Other References: