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. 09, 1994
Filed:
Oct. 28, 1993
Schlumberger Industries S.A., Montrouge, FR;
Abstract
An aerodynamic enclosure is placed in the flow, the enclosure including an opening enabling the enclosure to be filled with the flowing fluid, and having a thermal pulse generator mounted flush with its wall, which generator is suitable for emitting modulated thermal pulses simultaneously to the outside and to the inside of the enclosure. A first thermal sensor is located in the flow and a second thermal sensor is located in the enclosure. The sensors measure propagation times or phase shifts of the thermal waves respectively in the flow and in the non-flowing fluid, thereby making it possible to deduce the value of the fluid flow rate while compensating for any variations in the temperature, pressure, and composition of the fluid. The invention is applicable to gas metering.