Horiba, Ltd.

Horiba Instruments, Inc.

Masahiko Endo

Takuji Oida

Shigeyuki Akiyama

Masahiko Fujiwara

Takuya Ido

Shuji Takada

Naohito Shimizu

Satoshi Inoue

Tomoko Seko

Makoto Matsuhama

Hiroshi Mizutani

Poliang Chien

Minoru Ikawa

James E Downey

Norikazu Iwata

The measurement sensitivity is improved by suppressing the surrounding temperature influence as much as possible, while realizing scale reduction, and by enlarging the detection signal, while reducing the production errors in enclosing a reference gas. Provided is a thermal conductivity sensor that detects thermal conductivity of a sample gas by using a Wheatstone Bridge circuit constructed in such a manner that measurement resistors that are brought into contact with the sample gas are disposed on a first side, and reference resistors that are brought into contact with a reference gas are disposed on a second side, and comparing the potential difference between connection points of the reference resistors and the measurement resistors. The measurement resistors disposed on the first side are assembled in one measurement space, and the reference resistors disposed on the second side are assembled in one reference space.

Thermal conductivity sensor

There is provided a sample treatment apparatus which can, continuously and stably for a long time, treat a sample containing an easily precipitating substance such as sulfur and a measuring apparatus providing it. The sample treatment apparatus includes: a path for introducing a fluid for an aspirator, at least two sample flow paths A connected in one side to the path for introducing a fluid for an aspirator and connected in the other side to a sample collecting part, a sample flow path B connected in one side to one sample flow path A passing a fluid for an aspirator and connected in the other side to the other sample flow path A, a cooling part for cooling a part of the sample flow paths A, and a controller for selecting and switching the sample flow paths A into which a fluid for an aspirator is introduced.

Sample treatment apparatus and sample measurement apparatus providing it

This invention relates to a multi-component absorbance monitor, and the object is to provide a general-purpose and highly accurate compact absorbance monitor. Disclosed is an absorbance monitor including a light source, a sample cell and a plurality of detectors as elements, wherein a light collecting member is arranged between the light source and one detector, and an inside wall of the light collecting member has a site for guiding a part of light from the light source, that is, a light guiding opening, and light from the light guiding opening enters another detector. Preferably, the light collecting member lies between the light source and the sample cell. Preferably, an optical element used for another detector described above is arranged in the light guiding opening and adjacently to a light path formed by the light collecting member.

Absorbance monitor

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Kyoto, Japan

Masahiko Endo