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:
Sep. 13, 1983
Filed:
Nov. 03, 1982
Richard V DeLeo, Hopkins, MN (US);
Rosemount Inc., Eden Prairie, MN (US);
Abstract
A device for measuring a parameter such as temperature, humidity, or the like in a fluid stream having a leading portion and a trailing portion forming an elongated longitudinal housing with a bore extending longitudinally through the portions for flow therethrough. The flow rate is internally regulated to a desired rate by a restriction in the bore located in the trailing portion. Where the fluid stream is air, the restriction provides for internal Mach number regulation at various flow rates. A first plurality of ports is located in the leading portion for boundary layer control. The device has one or more annular fluid passageways downstream of the first ports coupled to the bore and ported to the exterior to cooperate with the bore to provide a lower pressure area for flow therethrough, and a sensor disposed in at least one such passageway. The leading portion may incorporate anti-icing for air stream measurement. For temperature sensors, radiation shielding is provided.