Title:
GAS DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/241768
Kind Code:
A1
Abstract:
This gas detection system is provided with: a sensor unit that outputs a signal corresponding to the concentration of a specific gas; a condensation unit that includes an adsorbent for adsorbing a gas to be detected; a supply unit that can supply a sample gas and a purge gas to the condensation unit; a heater than can heat the adsorbent; and a control unit. The control unit controls the supply unit so as to pass the sample gas through the condensation unit, and then controls the supply unit so as to pass the purge gas through the condensation unit while controlling the heater to increase the temperature of the absorbent. The control unit performs control so as to stop the passage of the purge gas to the condensation unit in a duration, from a first time point which is a point of time before or exactly when the temperature of the absorbent reaches the desorption temperature of the gas to be detected, to a second time point which is a point of time after the first time point, and so as to pass the purge gas through the condensation unit and supply the purge gas together with the gas to be detected to the sensor unit after the second time point.
Inventors:
ABE SHINICHI (JP)
UENO RYO (JP)
UENO RYO (JP)
Application Number:
PCT/JP2020/021161
Publication Date:
December 03, 2020
Filing Date:
May 28, 2020
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
G01N27/12; G01N1/40; G01N33/497
Foreign References:
| JPH11118744A | 1999-04-30 | |||
| JPH0783893A | 1995-03-31 | |||
| JP2014059204A | 2014-04-03 | |||
| JP2001013120A | 2001-01-19 | |||
| JP2009236589A | 2009-10-15 | |||
| JP2008008788A | 2008-01-17 | |||
| JPH11218512A | 1999-08-10 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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