Horiba, Ltd.

Horiba Advanced Techno, Co., Ltd.

Tokyo Metropolitan Government

Rumiko Furuya

Akio Nakayama

Hiroaki Murakami

Yuichi Ito

Akio Ishii

Yoshitake Ando

Yuji Gyoten

Yasuto Kaba

Susumu Yamauchi

Atsushi Senda

A liquid analyzer is one that performs analysis in a state of being immersed in a flowing analysis target liquid, and in order to simply make a good/bad determination and increase reliability, includes: a sensor adapted to, in a state where a responsive membrane is immersed in the flowing analysis target liquid, sense a predetermined component contained in the analysis target liquid; an analysis mechanism adapted to analyze the analysis target liquid with use of voltage generated in the sensor; and a resistance measurement mechanism adapted to, in the state where the responsive membrane is immersed in the flowing analysis target liquid, apply DC voltage to the responsive membrane to measure the resistance of the responsive membrane.

Liquid analyzer and liquid analysis system

To measure target component concentration in a liquid with higher accuracy without any dedicated apparatus or skill, a method is adapted to include: receiving a successive measurement value obtained by performing successive measurement of the target component concentration with use of a first measurement device immersed in the liquid; receiving a batch measurement value obtained by, with use of a second measurement device, performing batch measurement of the target component concentration in a part sampled from the liquid; and, when the batch measurement value is received, successively calculating a correlation value indicating the correlation between multiple successive measurement values and multiple batch measurement values respectively obtained in mutually corresponding multiple times of successive measurement and multiple times of batch measurement. In addition, the first measurement device is adapted to calculate the target component concentration or correct a successive measurement value with use of the latest correlation value.

Concentration measurement method, concentration measurement program, concentration measurement system, and concentration measurement device

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Tokyo, Japan

Rumiko Furuya