Title:
DECOMPOSED GAS SENSOR FOR GAS-INSULATED APPARATUS, INSULATING GAS DECOMPOSITION DETECTOR, AND DECOMPOSED GAS DETECTING METHOD
Document Type and Number:
WIPO Patent Application WO/2005/073702
Kind Code:
A1
Abstract:
A decomposed gas sensor for gas-insulated apparatuses responds to a decomposed gas of an insulating gas with high sensitivity and at high speed and is easily produced at low cost. An insulating gas decomposition detector for detecting decomposition and a decomposed gas detecting method are also disclosed. A decomposed gas sensor (1) for gas-insulated apparatuses for detecting a decomposed gas of the insulating gas sealed in a high-voltage electric apparatus. The decomposed gas sensor (1) is characterized mainly in that it comprises a detecting unit made of a semiconductor carbon nano material (2), and when a decomposed gas is adsorbed on the semiconductor carbon nano material (2) and reacts, the detection unit outputs an impedance variation.
Inventors:
SUEHIRO JUNYA (JP)
Application Number:
PCT/JP2005/001234
Publication Date:
August 11, 2005
Filing Date:
January 28, 2005
Export Citation:
Assignee:
KYUSHU TLO CO LTD (JP)
SUEHIRO JUNYA (JP)
SUEHIRO JUNYA (JP)
International Classes:
G01M3/18; G01N27/00; G01N27/02; G01N27/12; G01N27/22; H01H33/56; H02G5/06; (IPC1-7): G01N27/12; G01N27/22
Foreign References:
| JP2825634B2 | 1998-11-18 | |||
| JP2777274B2 | 1998-07-16 | |||
| JP2003227806A | 2003-08-15 | |||
| JP2003227808A | 2003-08-15 |
Other References:
SUEHIRO J. ET AL: "Yuden Eido ni yoru Carbon Nanotube no Shusekika Zairyo Kenkyukai Shiryo", DENKI GAKKAI DENSHI ZAIRYO KENKYUKAI SHIRYO, vol. EFM-03, no. 35-44, 19 December 2003 (2003-12-19), pages 41 - 46, XP002992178
SUEHIRO J. ET AL: "Fabricationn of a carbon nanotube-based gas sensor using dielectrophoresis and its application for ammonia detection by impedance spectroscopy", vol. 36, no. 21, 7 November 2003 (2003-11-07), pages L109 - L114, XP002342595
SUEHIRO J. ET AL: "Carbon nanotube Gas Sensor SF6 Bunkai Gas no Kenshutsu", DAI 51 KAI OYO BUTSURIGAKU KANKEI RENGO KOENKAI KOEN YOKOSHU 2004 NEN 3 GATSU, 2004, pages 540, XP002992179
SUEHIRO J. ET AL: "Fabricationn of a carbon nanotube-based gas sensor using dielectrophoresis and its application for ammonia detection by impedance spectroscopy", vol. 36, no. 21, 7 November 2003 (2003-11-07), pages L109 - L114, XP002342595
SUEHIRO J. ET AL: "Carbon nanotube Gas Sensor SF6 Bunkai Gas no Kenshutsu", DAI 51 KAI OYO BUTSURIGAKU KANKEI RENGO KOENKAI KOEN YOKOSHU 2004 NEN 3 GATSU, 2004, pages 540, XP002992179
Attorney, Agent or Firm:
Oguri, Shohei (7-13 Nishi-Shinbashi 1-chom, Minato-ku Tokyo, JP)
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