Electrical conductivity detector and method of determining phase adjustment value of background subtraction signal

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11402346
APP PUB NO 20210055242A1
SERIAL NO

16960081

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An electrical conductivity detector includes a cell through which a liquid flows, a measurement part for obtaining an electrical conductivity signal which is a current corresponding to an electrical conductivity of the liquid flowing through the cell, a phase adjustment value holder that holds a phase adjustment value which is a predetermined shift amount between a phase of the electrical conductivity signal and a phase of a measurement voltage applied to the cell by the measurement part, a BG subtraction signal generator configured to generate a BG subtraction signal for removing a background component included in the electrical conductivity signal obtained by the measurement part, the BG subtraction signal being adjusted to have a phase substantially identical to the phase of the electrical conductivity signal using the phase adjustment value held in the phase adjustment value holder, an addition part configured to add the electrical conductivity signal and the BG subtraction signal with each other, and a calculation part configured to calculate the electrical conductivity of the liquid flowing through the cell using a signal output from the addition part.

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Patent Owner(s)

  • SHIMADZU CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sawata, Hideto Kyoto, JP 4 11

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