The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 1989
Filed:
Dec. 02, 1987
Yuichi Miyagawa, Osaka, JP;
Kiwamu Yoneda, Osaka, JP;
Kazuhiro Kuwa, Osaka, JP;
Katsuyuki Kogo, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An automatic calibration apparatus for a partial gas pressure measuring sensor supplies a gas having a high partial pressure (referred to as the high gas) and a gas having a low partial pressure (referred to as the low gas), to a gas selection device (103) from a gas supplier (101) through a detector device (102) which detects an abnormal gas supply condition outside given, satisfactory gas supply conditions. The selection device (103) selects the high gas or the low gas for supplying the selected gas to a sensor support (27 or 104). A partial gas pressure measuring sensor to be calibrated is placed on the sensor support and an automatic calibration controller (106) stores an output of the partial gas pressure measuring sensor (105) in an information storing memory. When the detector device, detects an abnormal gas supply of the high gas or the low gas, the automatic calibration controller stops the storing of the output of the partial gas pressure measuring sensor (105) in the storing means (107).