公开(公告)号：US20200333229A1

公开(公告)日：2020-10-22

申请号：US16754107

申请日：2018-09-27

Applicant: Endress+Hauser Flowtec AG

Inventor： Ennio Bitto ,  Alfred Rieder ,  Yaoying Lin ,  Martin Josef Anklin

IPC: G01N9/00 ,  G01F1/84 ,  G01N9/32 ,  G01N11/04

Abstract: The present disclosure relates to a transducer comprising a tube, a converter unit, an electromechanical exciter arrangement for stimulating and sustaining forced mechanical vibrations of the converter unit, and a sensor arrangement for detecting mechanical vibrations of the converter unit and for generating a vibration signal representing mechanical vibrations of the converter unit. The converter unit includes two connection elements connected to a displacer element and is inserted into the tube and connected thereto. The converter unit is configured as to be contacted by a fluid flowing through the tube and enabled to vibrate such that the connection elements and the displacer elements are proportionately elastically deformed. The transducer can be a constituent of a measuring system adapted to measure and/or monitor a flow parameter of the flowing fluid and further includes an electronic measuring and operating system coupled to the exciter arrangement and the sensor arrangement of the transducer.

公开(公告)号：US10269336B2

公开(公告)日：2019-04-23

申请号：US15555714

申请日：2016-02-15

Applicant: Endress + Hauser Flowtec AG

Inventor： Yaoying Lin ,  Alfred Rieder ,  Wolfgang Drahm ,  Michal Bezdek ,  Pierre Ueberschlag

IPC: G10K1/08 ,  G10K1/066 ,  G10K11/00 ,  G10K11/04

Abstract: An arrangement comprising an ultrasonic transducer and a damping element with a longitudinal axis, which damping element connects the ultrasonic transducer with a housing- or measuring tube wall. The transducer has an end piece with a medium-contacting surface, from which ultrasonic signals are transferred into a gaseous or liquid medium. The damping element has at least two annular grooves and an annular mass segment arranged therebetween, characterized in that the damping element has a first eigenfrequency, in which the annular mass segment executes an axial movement parallel to the longitudinal direction of the damping element. This first eigenfrequency is the highest eigenfrequency, in the case that a plurality of eigenfrequencies are present, in the case of which the annular mass segment executes an axial movement parallel to the longitudinal direction of the damping element, and the damping element has a second eigenfrequency, in which the annular mass segment executes a rotary movement. This second eigenfrequency is the lowest eigenfrequency, in the case that a plurality of eigenfrequencies are present, in the case of which the annular mass segment executes a rotary movement, will and wherein the ratio of the first eigenfrequency to the second eigenfrequency is less than 0.75; and a field device of process measurements technology.