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:
Jul. 27, 2021
Filed:
Apr. 17, 2017
Endress+hauser Flowtec Ag, Reinach, CH;
Alfred Rieder, Landshut, DE;
Gerhard Eckert, Grenzach-Wyhlen, DE;
Ennio Bitto, Aesch, CH;
Hao Zhu, Freising, DE;
Endress+Hauser Flowtec AG, Reinach, CH;
Abstract
A measuring transducer includes a support body, a curved oscillatable measuring tube, an electrodynamic exciter, at least one sensor for registering oscillations of the measuring tube, and an operating circuit. The measuring tube has first and second bending oscillation modes, which are mirror symmetric to a measuring tube transverse plane and have first and second media density dependent eigenfrequencies f1, f3 with f3>f1. The measuring tube has a peak secant with an oscillation node in the second mirror symmetric bending oscillation mode. The operating circuit is adapted to drive the exciter conductor loop with a signal exciting the second mirror symmetric bending oscillation mode. The exciter conductor loop has an ohmic resistance Rand a mode dependent mutual induction reactance Rwhich depends on the position of the exciter. The exciter is so positioned that a dimensionless power factor has a value of not less than 0.2.