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:
Dec. 03, 1985
Filed:
Apr. 01, 1983
Hiroyuki Amimoto, Kyoto, JP;
Hiroji Kohsaka, Kyoto, JP;
Horiba, Ltd., Kyoto, JP;
Abstract
An apparatus for indirectly measuring or controlling the separation ratio of a gas to be measured or controlled when passing through a branch passage. A diluent gas with a known and adjustable flow rate is supplied to each of the branched passages through which the gas to be measured flows. The difference in the concentration of a specified gas in each of the branched passages is then measured. If the difference is equal to zero, then the separation ratio of the diluent gas is equal to the separation ratio of the gas to be measured. Alternatively, the separation ratio of the diluent gas may be set to a predetermined desired value and the flow of the gas to be measured controlled until the detected difference in concentration is equal to zero, at which point the separation ratio of the gas to be measured is equal to the separation ratio of the diluent gas.