发明公开
- 专利标题： Gas detection device
- 专利标题（中）： Gasnachweisvorrichtung。
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申请号： EP91302619.1申请日： 1991-03-26
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公开(公告)号： EP0449573A2公开(公告)日： 1991-10-02
- 发明人: Uehara, Kiyoji , Tanaka, Hiroaki , Matsuura, Masayuki , Tai, Hideo
- 申请人： TOKYO GAS CO., LTD.
- 申请人地址： 5-20, Kaigan 1-chome Minato-ku Tokyo 105 JP
- 专利权人： TOKYO GAS CO., LTD.
- 当前专利权人： TOKYO GAS CO., LTD.
- 当前专利权人地址： 5-20, Kaigan 1-chome Minato-ku Tokyo 105 JP
- 代理机构： Lawrence, John Gordon
- 优先权： JP78498/90 19900327; JP183667/90 19900710; JP246331/90 19900918
- 主分类号： G01N21/39
- IPC分类号： G01N21/39 ; H01S3/025 ; G02B3/00
摘要：
There is disclosed a gas detection device comprising :-
a laser which generates a laser beam of a wave length and intensity corresponding to a drive current and the temperature;
a laser drive circuit which modulates the drive power source of the laser at a specified amplitude centered around a specified temperature and a specified current value;
a means of stabilizing the wavelength by which the central wavelength of the laser beam generated by the laser is stabilized at a specific position on a special gas absorption line;
a beam detection apparatus (6) which detects the intensity of the laser beam after the laser beam passes through the measuring object gas atmosphere; and
a measuring means which performs a quantitative measurement of a specific gas based on the output of the beam detection apparatus.
a laser which generates a laser beam of a wave length and intensity corresponding to a drive current and the temperature;
a laser drive circuit which modulates the drive power source of the laser at a specified amplitude centered around a specified temperature and a specified current value;
a means of stabilizing the wavelength by which the central wavelength of the laser beam generated by the laser is stabilized at a specific position on a special gas absorption line;
a beam detection apparatus (6) which detects the intensity of the laser beam after the laser beam passes through the measuring object gas atmosphere; and
a measuring means which performs a quantitative measurement of a specific gas based on the output of the beam detection apparatus.
公开/授权文献
- EP0449573A3 Gas detection device 公开/授权日：1993-01-13
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