Title:
GAS PERMEABILITY MEASUREMENT APPARATUS AND GAS PERMEABILITY MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2015/083957
Kind Code:
A1
Abstract:
The present invention provides a gas permeability measurement apparatus and a gas permeability measurement method. The gas permeability measurement apparatus comprises: a first chamber filled with a measurement gas and maintained at a constant pressure; a second chamber connected in series to the first chamber; a third chamber connected in series to the second chamber; a separating plate having a through hole and separating the second chamber and the third chamber from each other; a conductance control part disposed at a connection part between the second chamber and the third chamber and controlling a conductance passing the through hole of the separating plate; a vacuum pump connected to the third chamber and discharging air out of the third chamber; and a differential pressure gauge measuring a differential pressure between the second chamber and the third chamber. A sample is disposed at a connection part between the first chamber and the second chamber, and the measurement gas penetrates the sample so as to be delivered to the second chamber. Also, the conductance control part sequentially provides at least two different conductances.
Inventors:
SEONG DAE-JIN (KR)
SHIN YONG-HYEON (KR)
LIM IN-TAE (KR)
SHIN YONG-HYEON (KR)
LIM IN-TAE (KR)
Application Number:
PCT/KR2014/011111
Publication Date:
June 11, 2015
Filing Date:
November 19, 2014
Export Citation:
Assignee:
KOREA RES INST OF STANDARDS (KR)
International Classes:
G01N7/10; G01N15/08
Foreign References:
| JP2010160098A | 2010-07-22 | |||
| JP2011185760A | 2011-09-22 | |||
| KR20110048092A | 2011-05-11 | |||
| JPH07128209A | 1995-05-19 |
Attorney, Agent or Firm:
LEE, PYUNG-WOO (KR)
이평우 (KR)
이평우 (KR)
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