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. 06, 2022
Filed:
Apr. 26, 2016
Endress + Hauser Flowtec Ag, Reinach, CH;
Peter Ploss, Erlangen, DE;
Stefan Rupitsch, Nuremberg, DE;
Michal Bezdek, Aesch, CH;
Thomas Frohlich, Munchenstein, CH;
Beat Kissling, Reinach, CH;
ENDRESS+HAUSER FLOWTEC AG, Reinach, CH;
Abstract
A method for ascertaining at least one pipe wall resonance frequency of a pipeline in the region of a measuring point by means of a field device of process measurements technology having at least a first ultrasonic transducer, which is placed on the pipeline at the measuring point, comprising steps as follows: providing a first transfer function U(f) at least of the first or a plurality of ultrasonic transducers located in the region of the measuring point; ascertaining a received spectrum U(f) from a received signal U(t) after transmission of an ultrasonic signal; ascertaining a second transfer function U(f) from the first transfer function U(f) of the first or the plurality of ultrasonic transducers and from the received spectrum u(f), wherein the second transfer function U(f) is characteristic for the measuring point; and ascertaining the at least one pipe wall resonance frequency f, especially a plurality of resonance frequencies, in the region of the measuring point by evaluating the second transfer function U(f) from step III, as well as a clamp-on, ultrasonic, flow measuring device, a method for ascertaining flow, a method for ascertaining a change of the measuring point and an identification device.