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. 07, 1979
Filed:
Dec. 21, 1977
Applicant:
Inventor:
Suzuo Suzuki, Yokosuka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
7319 / ; 7319 / ;
Abstract
Flow rate in a fluid passage is measured by making corona discharge in a section of the fluid passage to cause partial ionization of the fluid and measuring a current produced in a DC circuit including a pair of electrodes disposed in the fluid passage downstream of the corona discharge section. Variations in the relationship between the measured current and the flow rate with difference in inherent conductivity among fluids are evadable by measuring a basic current through the DC circuit while the corona discharge is interrupted and regulating a voltage for either ionization or measurement based on the basic current.