LASER-TYPE GAS ANALYZER FOR SHIPS

WIPO Patent Application WO/2016/174761

A1

Provided is a laser-type gas analyzer for ships that has a structure in which optical axis deviation is unlikely to occur, and that accurately analyzes, over a long period of time, the gas concentration of a low-concentration gas to be measured, which is within an exhaust gas, by excluding the influence of exhaust gas in general marine areas by performing analysis only at a designated marina area and not at general marine areas. A laser-type gas analyzer 1 for ships is configured such that: a cylindrical gas cell 20 is disposed on the outer side of a duct 100; an opening 41 of a duct-side gas introduction unit 40 is disposed in the passage of the duct 70 in which a gas to be measured flows; and only when an exhaust gas containing a low-concentration gas to be measured flows as at a designated marine area, a control unit 80 opens an introduction side valve 60 and a leading-out side valve 70 such that the exhaust gas is introduced into the gas cell 20 and is measured.

TABARU MASAYA (JP)
HIGASHI RYOUICHI (JP)
KOIZUMI KAZUHIRO (JP)
INUI TAKASHI (JP)

PCT/JP2015/062951

November 03, 2016

April 30, 2015

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FUJI ELECTRIC CO LTD (JP)

G01N21/3504; G01N21/39

JP2012137429A	2012-07-19
JP2012052834A	2012-03-15
JPS601658U	1985-01-08
JP2000039394A	2000-02-08
JP2011013073A	2011-01-20
JPH01174942A	1989-07-11

TAKASHI INUI ET AL.: "Senpaku-yo Hai Gas Joka Sochi no Kaihatsu -Kaisei MARPOL Joyaku Fuzokusho VI (SOx·PM Kisei) Taio", PROCEEDING OF THE INSTITUTE OF ELECTROSTATICS JAPAN, vol. 37, no. 6, 30 November 2013 (2013-11-30), pages 244 - 249, XP009502090
See also references of EP 3290906A4

MORITA YUICHI (JP)
Morita Yuichi (JP)

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