Endress + Hauser Flowtec Ag

Sascha Grunwald

Achim Wiest

Oliver Brumberg

Andreas Berger

Beat Kissling

Quirin Muller

Oliver Berberig

Alexander Murray

Thomas Frohlich

Wolfgang Brobeil

Rudolf Braun

Stefan Rüger

Theo Gerald Hofmann

Klaus Beringer

Thomas FRÖHLICH

Fabian Steiner

Andrea Berger

Achim Stark

Jens Rautenberg

Quirin MÜLLER

An ultrasound instrument for detecting a measured value of a medium includes a measurement chamber having a chamber wall and a longitudinal axis; a pair of ultrasound transducers configured to transmit ultrasound signals along a signal path between ultrasound transducers of the pair through the measurement chamber and to receive ultrasound signals, wherein the signal path includes a signal reflection on a reflection surface, wherein the chamber wall in a region of the reflection surface opposite a first chamber side is configured to prevent a reflection of an ultrasound signal on a chamber outer surface of the chamber wall in the direction of the signal path, wherein the chamber wall has, in the region of the reflection surface, a maximum wall thickness which is at least a factor of 1.5 greater than a Rayleigh wavelength, associated with a central frequency, of the ultrasound signal in the chamber wall.

Ultrasonic measuring device

An ultrasonic transducer arrangement for a clamp-on ultrasonic, flow measuring point includes a plurality of ultrasonic transducers, each adapted to radiate ultrasonic signals into the measuring tube and/or to receive ultrasonic signals emerging from the measuring tube, wherein a first group of first ultrasonic transducers is arranged on a first side of the measuring tube, and a second group of second ultrasonic transducer is arranged on a second side of the measuring tube opposite the first side, wherein at least one first/second ultrasonic transducer is adapted to receive ultrasonic signals of at least one second/first ultrasonic transducer, respectively, wherein adjoining ultrasonic transducers of the first group have, in each case, first separations from one another, and wherein adjoining ultrasonic transducers of the second group have, in each case, second separations from one another.

Clamp-on ultrasonic transducer arrangement independent of measuring tube diameter at a measuring point

The present disclosure relates to an ultrasonic transducer arrangement of a clamp-on ultrasonic, flow measuring point having a plurality of clamp-on ultrasonic transducers, wherein the arrangement is configured to be applied on measuring tubes of various diameters, without necessitating new orienting of the ultrasonic transducers of the ultrasonic transducer arrangement.

Clamp-on ultrasonic transducer arrangement independent of measuring tube diameter at a measuring point and method for commissioning the same

The present disclosure relates to an ultrasound transducer having at least one transducer element for sending or receiving ultrasound signals. The ultrasound transducer includes a matching element acoustically coupled to the transducer element that is designed to ensure acoustic matching between the transducer element and a medium that acts on the matching element. In a first subregion of the axial extent, the matching element partially fills each cross section of the matching element, and a filling component in the first subregion along the first longitudinal axis monotonically increases in the direction of the first side. The matching element has a plurality of ring elements in the first subregion arranged concentrically around the first longitudinal axis. Each ring element partially fills each cross section in the first subregion, wherein the first subregion comprises at least 80% of an axial extent of the matching element along the first longitudinal axis.

Ultrasound transducer

The present disclosure relates to a clamp-on ultrasonic sensor for an ultrasonic flow rate measuring device and to an ultrasonic flow rate measuring device comprising at least one clamp-on ultrasonic sensor according to the present disclosure. The clamp-on ultrasonic sensor is designed to generate at least one lamb wave mode in a measuring tube wall of a measuring tube of the ultrasonic flow rate measuring device. To ensure the use of the clamp-on ultrasonic sensor on different types of measuring tubes, the clamp-on ultrasonic sensor comprises a coupling element, which coupling element is adapted to a respective type of measuring tube.

Clamp-on ultrasonic sensor having coupling element adapted for respective measuring tube

A measuring tube, especially a measuring tube for an ultrasonic, flow measuring device, which measuring tube has a measuring tube wall and at least in certain regions a basic form with rotational symmetry or polygonal cross section and a straight measuring tube axis. The measuring tube includes at least one functional area for positioning a reflector, on which an acoustic signal is reflected on a signal path, and the functional area is formed integrally from the measuring tube wall. The functional area defines in at least one sectional view a circular segment, which serves as support for a reflector or the functional areas has stops, whose distal ends define in at least one sectional view a circular segment, which serves as support for a reflector, as well as an ultrasonic, flow measuring device and a method for manufacture of a measuring tube.

Ultrasonic, flow measuring device

A coupling element for an ultrasonic transducer, which comprises a first recess provided for the arrangement of a piezoelectric element and comprising a terminal base surface in which an ultrasound signal generated by the piezoelectric element can be fed into the coupling element. The coupling element comprising inside the first recess one or a plurality of stops, each of which comprises at least one stop surface which extends along a plane, the plane extending parallel to the base surface of the first recess, and there being defined between this plane and the base surface a space for accommodating material for an acoustic adaptation layer. The invention further concerns an ultrasonic transducer and an ultrasonic flow meter.

Coupling element, ultrasonic transducer and ultrasonic flow meter

An ultrasonic flow meter comprising: a measurement pipe, which has a measurement pipe wall, at least in some parts a basic shape having a rotationally symmetric or polygonal cross-section, and a straight measurement pipe axis; a transmitter for transmitting an acoustic signal on a first signal path; and a receiver for receiving the acoustic signal on the first signal path. The measurement pipe has a plurality of reflection surfaces, by which the acoustic signal on the first signal path is reflected multiple times, and wherein the reflection surfaces are integrally formed from the measurement pipe wall, the reflection surfaces for reflecting the acoustic signal being designed in such a way that one or more of the reflection surfaces at least partially protrude into the basic shape of the measurement pipe and one or more of the reflection surfaces project outward at least from the basic shape of the measurement pipe.

Ultrasonic flow meter

An ultrasonic, flow measuring device, comprising a measuring tube having a straight measuring tube axis, a transmitter for sending an acoustic signal on a first signal path, a receiver for receiving the acoustic signal on the first signal path and a number of reflection surfaces, on which the acoustic signal is reflected at least once on the first signal path, wherein minimum separations of at least three subsections from the measuring tube axis lie in the range 0.4-0.6 r, wherein r is the inner radius of the measuring tube.

Ultrasonic flow measuring device having a signal path of multiple straight subsection having a minimum separation in the range of 0.4-0.6r from the tube axis

An ultrasonic flow measurement device for ascertaining flow velocity, respectively volume flow, of a fluid, especially a gas or a liquid, using a travel-time difference method, comprising: a measuring tube having a straight measuring tube axis; at least one transmitter for transmitting an acoustic signal; at least one receiver for receiving the acoustic signal; and at least one reflection surface for reflecting the acoustic signal. The transmitter and the receiver are arranged on the tube wall of the measuring tube in such a manner that they can transmit the acoustic signal inclined or perpendicularly to the flow direction of the fluid, wherein at least one reflection surface is embodied concavely in a preferential direction; and a method for ascertaining flow velocity, respectively volume flow, of a fluid.

Ultrasonic flow measuring device having a concave reflective surface that cancels dispersion and method for ascertaining flow velocity, respectively volume flow, of a fluid

An ultrasonic, flow measuring device, including a measuring tube a transmitter a receiver and at least a first reflection surface. An acoustic signal incident on a first reflection surface and an acoustic signal reflected on the first reflection surface travel, in each case, along a straight subsection of the first signal path. The transmitter, the receiver and the first reflection surface are so oriented with respect to one another and arranged in or on the measuring tube that the acoustic signal on the first signal path from the first transmitter to the first receiver is so reflected on the first reflection surface that the sum of all lengths of all subsections as projected on a measuring tube axis, extending in a first plane parallel to the measuring tube axis, and having a predetermined separation other than zero from the measuring tube axis has a predetermined value different from zero.

Growing community of inventors

Steinen, Germany

Sascha Grunwald