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:
Mar. 04, 2008
Filed:
Oct. 14, 2005
Yasuhiro Mizohata, Kyoto, JP;
Yasuhiro Mizohata, Kyoto, JP;
Abstract
A differential pressure flowmeter comprises a tube having a circular section, a first pressure sensor for measuring a pressure of a liquid flowing into the tube, a second pressure sensor for measuring a pressure of a liquid flowing out of the tube, a storage part for storing information and an operation part for performing various computations. In the differential pressure flowmeter, a laminar flow where a Reynolds number is less than or equal to 2000 is formed within the tube. Outputs from the first pressure sensor and the second pressure sensor are transmitted to the operation part, a pressure difference between both ends of the tube is obtained, and then a flowrate of a liquid flowing through the tube is determined on the basis of the pressure difference and flowrate information stored in the storage part in advance. In the differential pressure flowmeter, after the flow is made laminar completely, the pressure difference is obtained and it is thereby possible to perform measurement of the flowrate stably with high accuracy.