Endress + Hauser Flowtec Ag

Michal Bezdek

Pierre Ueberschlag

Andreas Berger

Achim Wiest

Beat Kissling

Alfred Rieder

Wolfgang Drahm

Vivek Kumar

Oliver Brumberg

Peter Ploss

Oliver Berberig

Frank Wandeler

Thomas Frohlich

Yaoying Lin

Stefan J Rupitsch

Torsten Strunz

Quirin Müller

Panagiotis Papathanasiou

Gotthard Liehr

Arno Lang

Benjamin Kossek

Guido Schwanekamp

Thomas FRÖHLICH

Peter Ploß

A method for putting into operation and/or checking an ultrasonic, flow measuring point using a service unit, wherein the service unit has a display unit and a camera, wherein the measuring point includes a pipeline for conveying a medium and at least one ultrasonic transducer, includes identifying the measuring point vis a vis the service unit; ascertaining settable parameters based on the identity of the measuring point; registering geometric data of at least one part of the measuring point by means of the camera; analyzing registered geometric data and deriving at least one parameter value for at least one of the parameters to be set based on the analytical result and the identity; ascertaining at least one optimum mounting position based at least on the derived parameter value; and mounting an ultrasonic transducer at one of the ascertained optimum mounting positions.

Method for putting into operation and/or checking an ultrasound throughflow measuring point

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.

Method for ascertaining at least one pipe wall resonance frequency, as well as clamp-on, ultrasonic, flow measuring device

The invention relates to an ultrasonic transducer comprising an acoustic transformer, wherein the acoustic transformer has a transformer body having a hollow space, and there lies between the hollow space and the medium a membrane, whose center oscillates freely. Furthermore, the invention relates to methods for manufacturing such an acoustic transformer.

Ultrasonic transducer and method for manufacturing an ultrasonic transducer

The present disclosure describes an ultrasonic flowmeter including: a measuring tube with a measuring tube wall and at least one pair of housings extending to an outer side of the measuring tube wall; a pair of ultrasonic transducers, each with a transducing element for generating and/or sensing ultrasonic pulses and a transducer body, wherein each of the housings is arranged to house one of the transducers, and wherein the housings have an inner first diameter; wherein transducer body includes a circumferential surface, and wherein the transducer body includes an end face, wherein the end face has a second diameter, and wherein the transducer includes at least one first protrusion protruding from the circumferential surface into a gap between the transducer body and the housing.

Ultrasonic flowmeter

A measuring device for measuring flow and/or composition of a measured medium in a pipe or tube by registering an ultrasonic measurement signal includes a measurement transmitter and a connection adapter for mechanical securement of the measurement transmitter on the pipe or tube, in which the connection adapter has a longitudinal axis and the measuring device includes a measuring transducer element and at least one metal hose, wherein at least one signal transmission cable is arranged in the metal hose for signal transmission between the measurement transmitter and a sensor element, and wherein the metal hose mechanically connects the measuring transducer element with the connection adapter.

Measuring device for determining a flow and/or composition of a measuring medium in a pipe

A method for ascertaining a characteristic variable for evaluating a measuring arrangement comprising a clamp-on, ultrasonic, flow measuring device and a pipe, on which the clamp-on, ultrasonic, flow measuring device is secured, and/or for evaluating measurement operation of such a measuring arrangement, characterized by the method steps as follows: A) providing characteristic values relative to an exciter signal produced by the clamp-on, ultrasonic, flow measuring device; B) providing sensor-specific data as regards acoustic properties of one or more ultrasonic transducers of the clamp-on, ultrasonic, flow measuring device C) inputting data relative to the pipe material and the pipe wall thickness, especially inputting such data by a user, and D) ascertaining the characteristic variable from the parameters and data of steps A-C based on a mathematical model, as well as a computer program product and a clamp-on, ultrasonic, flow measuring device.

Method for ascertaining a characteristic variable for evaluating a measuring arrangement comprising a clamp-on, ultrasonic, flow measuring device and a pipe and/or for evaluating measurement operation of such a measuring arrangement

The invention relates to an ultrasonic transducer with a housing, in which a transducer element for producing and detecting ultrasonic signals and an acoustic transformer are arranged, wherein the acoustic transformer is acoustically and mechanically coupled with the transducer element. The housing includes at least one housing body, which has at least one housing chamber with a housing wall, which housing wall at least partially surrounds the acoustic transformer, wherein the housing is acoustically and mechanically connected with a measuring tube wall or a container wall and wherein the acoustic transformer is connected or connectable mechanically with the housing via a lateral surface of the acoustic transformer by means of a first acoustic insulation, especially an annular first acoustic insulation.

Ultrasonic transducer for application in an ultrasonic, flow measuring device or in an ultrasonic, fill-level measuring device

An arrangement for transmitting and/or receiving an ultrasonic, wanted signal in a measured medium, comprising a vibration decoupling element for securing at least one ultrasonic transducer in a containment, characterized in that the vibration decoupling element has a platform for securing the vibration decoupling element to a sensor nozzle or to the containment and a second interface for securing an ultrasonic transducer. Between the second interface and the platform a vibration decoupling structural element is arranged, which structural element is embodied as a solid body, which has one or more interfaces with other elements of the vibration decoupling element, especially with the second interface for securing the ultrasonic transducer and/or the platform, and wherein the structural element () has an as much as possible spherical-, ellipsoidal-, toroidal- or polyhedral shape.

Arrangement for transmitting and/or receiving an ultrasonic, wanted signal and ultrasonic, flow measuring device

An arrangement, comprising a housing wall, an ultrasonic transducer and a damping element with a longitudinal axis, which damping element connects the ultrasonic transducer with the housing wall. The ultrasonic 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 is provided for body sound damping between the ultrasonic transducer and the housing wall, and wherein the damping element has at least one, especially a number of, oscillatory nodes, characterized in that there is arranged between the damping element and the housing wall at least a first sealing ring, which is positioned at a height of an oscillatory node.

Arrangement and ultrasonic, flow measuring device

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.

Arrangement and field device of process measurements technology

Disclosed is an ultrasonic transducer mounting assembly comprising an ultrasonic transducer element, a transducer housing inside which the ultrasonic transducer element is arranged, and an accommodation unit inside which the transducer housing is clamped in a clamping section. The disclosed assembly is characterized in that the clamping section comprises at least one bearing that has at least one rolling element, in particular at least one ball bearing that has at least one ball, for acoustically decoupling the transducer housing from the accommodation unit.

Ultrasonic transducer mounting assembly

A method for monitoring the operating state of a first ultrasonic transducer in an ultrasonic, flow measuring device having at least one measuring tube and at least two ultrasonic transducers, including steps as follows: a) providing a first value or a plurality of first values, which relate to the geometric arrangement of the first ultrasonic transducer in the measuring tube and/or to the geometric arrangement of the first ultrasonic transducer relative to a second ultrasonic transducer; b) ascertaining a second value or a plurality of second values for a flow velocity of a medium located in the measuring tube c) providing a third value and/or a plurality of third values for temperature and/or pressure of the medium located in the measuring tube; d) simulating a desired value of a signal strength taking into consideration the first, second and/or third values; and e) comparing the simulated desired value of a signal strength with an ascertained real value of the signal strength.

Method for monitoring the operating state of an ultrasonic transducer in an ultrasonic, flow measuring device

A method for the manufacture of a measuring device, and a measuring device for registering at least one measured value of at least one process variable, wherein the measuring device includes a measuring tube, which has at least one necked out portion, on which at least one measuring transducer is arranged, wherein the measuring tube together with the necked out portion is monolithic, and wherein the necked out portion is manufacturable from the measuring tube at least partially by a deformation method.

Measuring device

A measuring tube, a measuring system and a method for determining and/or monitoring flow through a measuring tube, comprising a measuring tube, on which ultrasonic transducers are releasably placeable. The ultrasonic transducers transmit and/or receive ultrasonic signals, which pass through the measuring tube approximately coaxially to the measuring tube axis. At least one ultrasonic transducer comprises at least one tiltable clamp which can be locked into at least one elevation or depression located on the measuring tube.

Ultrasonic flow measuring system including a mounting latch for mounting the transducers to the measuring tube

An ultrasonic transducer for determining and/or monitoring flow of a measured medium through a measuring tube, which includes at least one piezoelectric element, at least one coupling element and at least one adapting, or matching, layer between the piezoelectric element and coupling element. The adapting, or matching, layer has a thickness smaller than a fourth of an uneven integer multiple of a wavelength of an ultrasonic signal being used.

Growing community of inventors

Aesch, Switzerland

Michal Bezdek