Title:
ガス濃度計測装置
Document Type and Number:
Japanese Patent JP6947471
Kind Code:
B2
Abstract:
A gas concentration measuring device 1 related to the present invention includes a light emitter 3 and a light receiver 4 which are disposed so as to be opposed to each other with a hollow tube-like measurement pipe 2 interposed therebetween and the device 1 is configured to measure concentration of target gas passing through the measurement pipe 2 using light applied from the light emitter 3, transmitted through an inside of the measurement pipe 2, and received by the light receiver 4. Purge gas guide pipes 11, 13 through which purge gas is introduced into optical systems of the light emitter 3 and the light receiver 4 are connected to a side wall of the measurement pipe 2. The measurement pipe 2 includes a gas entrance portion 21 having a tapered shape widening from a gas supply port toward a downstream side.
Inventors:
Yoshinori Fukui
Ryota Kobayashi
Tetsuya Yokoyama
Go Inoue
Yusuke Oda
Okada Mitsuyasu
Kozo Akao
Ryoichi Azuma
Ryota Kobayashi
Tetsuya Yokoyama
Go Inoue
Yusuke Oda
Okada Mitsuyasu
Kozo Akao
Ryoichi Azuma
Application Number:
JP2016060038A
Publication Date:
October 13, 2021
Filing Date:
March 24, 2016
Export Citation:
Assignee:
Yanmar Power Technology Co., Ltd.
Fuji Electric Co., Ltd.
Fuji Electric Co., Ltd.
International Classes:
G01N21/3504
Domestic Patent References:
| JP2011127988A | ||||
| JP63111654U | ||||
| JP3154852A | ||||
| JP2001083075A | ||||
| JP2007285721A | ||||
| JP5003988U | ||||
| JP2014240808A | ||||
| JP2184743A |
Foreign References:
| WO2004031742A1 | ||||
| US20080011049 |
Attorney, Agent or Firm:
Ryuichi Watanabe