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:
Apr. 09, 2024
Filed:
Sep. 24, 2019
Promecon Process Measurement Control Gmbh, Barleben, DE;
Hans-Georg Conrads, Hannover, DE;
Abstract
The invention relates to a method for measuring a flow velocity (v) of a gas stream () featuring the steps: (a) time-resolved measurement of an IR radiation parameter (E) of IR radiation of the gas stream () at a first measurement point (P) outside of the gas stream (), thereby obtaining a first IR radiation parameter curve (E(t)), (b)time-resolved measurement of an IR radiation parameter (E) at a second measurement point (P) outside of the gas stream (), thereby obtaining a second IR radiation parameter curve (E(t)), (c) calculation of a transit time (τ) from the first IR radiation parameter curve (E(t)) and the second IR radiation parameter curve (E(t)), in particular by means of cross-correlation, and (d) calculation of the flow velocity (vG) from the transit time (τ), (e) wherein the IR radiation parameter (E) is measured photoelectrically at a wavelength (g) of at least 780 nm, and (f) a measurement frequency (f) is at least 1 kilohertz.
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