Title:
【発明の名称】検査ガスの未知のパラメータを測定する装置
Document Type and Number:
Japanese Patent JP2795726
Kind Code:
B2
Abstract:
A method and apparatus for measuring a parameter of a test gas in isolation from gas pressure fluctuations. A pump draws the test gas through an air capacitor into a sensor, storing the gas in the capacitor. A valve closes a fluid flow path which admits the test gas to the air capacitor and opens a fluid flow path between the air capacitor and a constant pressure alternate gas source, isolating the air capacitor and the sensor from pressure fluctuations in the test gas. The air capacitor prevents any mixing of the test gas with the alternate gas until measurement of the unknown parameter has been accomplished.
Inventors:
PIITAA GUURUDEINGU
Application Number:
JP9744890A
Publication Date:
September 10, 1998
Filing Date:
April 12, 1990
Export Citation:
Assignee:
PYUURITAN BENETSUTO CORP
International Classes:
A61B5/08; A61B5/083; A61B5/097; G01N1/00; G01N1/24; G01N1/22; G01N27/00; G01N33/00; (IPC1-7): G01N1/22; A61B5/08; G01N1/00; G01N27/00; G01N33/00
Domestic Patent References:
| JP63295958A | ||||
| JP551592A | ||||
| JP4882899A | ||||
| JP5027255B2 |
Other References:
【文献】米国特許4202352(US,A)
Attorney, Agent or Firm:
Kazuo Sato (3 others)