Abstract: The measuring system is inserted into the course of a process line and serves for registering at least one measured variable of a medium flowing in the process line. The measuring system includes for such purpose a measuring transducer having a measuring tube serving for conveying medium being measured and a sensor arrangement, which has at least one sensor element reacting primarily to the measured variable to be registered, and which delivers by means of at least one sensor element at least one measurement signal influenced by the measured variable. Further, the measuring system includes a measuring electronics communicating with the measuring transducer and using the at least one measurement signal for producing, at least at times, at least one measured value instantaneously representing the measured variable.
Abstract: A measuring transducer, comprises at least one measuring tube for conveying a flowing medium. The measuring tube vibrates at least at times during operation. The measuring transducer further comprises a sensor arrangement, which serves to register oscillations of the measuring tube. The measuring tube extends with an oscillatory length between an inlet-side, first measuring tube end and an outlet-side, second measuring tube end, and, during operation, oscillates about an oscillation axis, which is parallel to or coincides with an imagined connecting axis which imaginarily connects the two measuring tube ends.
Type:
Application
Filed:
July 23, 2010
Publication date:
January 27, 2011
Applicant:
Endress + Hauser Flowtec AG
Inventors:
Christof Huber, Vivek Kumar, Christian Schûtze
Abstract: An economically producible pressure-resistant housing with a display element and/or operating element for use in potentially explosive areas, comprising an inner space which serves to accommodate electronics, and a recess on the outside, inside of which a display and/or operating element is placed whose connecting lines extend into the inner space via a pressure-resistant leadthrough, wherein the display and/or operating element is surrounded on all sides by a pressure-resistant, crystal-clear encapsulation, which fills remaining cavities in the recess and outwardly closes the recess.
Abstract: A thermal, flow measuring device for determining and/or monitoring flow of a measured medium through a measuring tube. The thermal, flow measuring device includes: a first pin-shaped shell and at least a second pin-shaped shell; a first resistance thermometer and at least a second resistance thermometer. At least the first resistance thermometer is embodied so as to be heatable, wherein the resistance thermometers, in each case, have a first surface, and at least a second surface, which lies opposite the first surface. The first pin-shaped shell surrounds the first resistance thermometer, and the second pin-shaped shell surrounds the second resistance thermometer. The pin-shaped shells are fillable with a fill material; wherein, in each case, at least one spacer is placeable between the pin-shaped shell and the first surface of the resistance thermometer, and the second surface of the resistance thermometer is at least partially covered with fill material.
Type:
Application
Filed:
March 12, 2009
Publication date:
January 13, 2011
Applicant:
Endress + Hauser Flowtec AG
Inventors:
Dirk Boguhn, Jiri Holoubek, Jiri Polak, Oliver Popp, Axel Pfau
Abstract: A method including: at least one oscillation measurement signal serving as primary signal of first class representing vibrations of a measuring tube, through which medium to be measured is momentarily flowing; and at least one oscillation measurement signal serving as primary signal of second class representing vibrations of at least one measuring tube, especially of the same measuring transducer, and orbiting around the axis of rotation of a carousel-type filling machine orbiting, but not containing flowing medium. Furthermore, based on both the primary signal of first class as well as also the primary signal of second class, at least one measured value, representing a measured variable, especially a mass flow rate and/or an integrated mass flow and/or a density of medium to be measured, is generated. Additionally, an apparatus is provided suited for reducing the method to practice and/or embodied as a carousel-type filling machine.
Abstract: A measuring device, embodied, for example, as an in-line measuring device and/or flow measuring device, serves for registering at least one measured variable of a medium, for example a medium flowing in a pipeline, and is made, at least in part, of a solid, biologically degradable, synthetic material (BDM).
Abstract: Electrode for a magneto-inductive flow measuring device for determining volume flow of an electrically conductive medium flowing through a measuring tube. The measuring tube, or at least the portion of it which comes in contact with the medium, is not electrically conductive; wherein the electrode exhibits an electrode shaft and an electrode head. The electrode head contacts the medium, and the electrode shaft exhibits frustoconically shaped sealing lips arranged one after the other in the direction of the longitudinal axis of the electrode. The electrode shaft is pressed into a bore in the wall of the measuring tube. The maximum diameter of the sealing lip nearest the electrode head is greater than the diameter of the bore, and, at least in a part of the electrode shaft, the maximum diameter of any following sealing lip is greater than the maximum diameter of the preceding sealing lip.
Abstract: The field-device electronics includes an electric current adjuster, through which a supply current flows, driven by a supply voltage provided by the external energy supply and adjusted by the current adjuster. Additionally, the field-device electronics includes an internal operating and evaluating circuit for controlling the field device, as well as an internal supply circuit feeding the internal operating and evaluating circuit. Provided in the supply circuit is a first useful-voltage controller flowed-through by a first component of the supply current, and a second useful-voltage controller flowed through, at least at times, by a second current component of the supply current, and providing in the field-device electronics a second internal, useful voltage. Further, the two useful-voltage controllers are galvanically separated from one another.
Abstract: An apparatus for measuring volume- or mass-flow of a medium in a pipeline. The apparatus includes: a measuring tube, through which medium flows in the direction of the measuring tube axis, wherein the measuring tube has, in stream direction of the medium, a first end region and a second end region; a magnet system, which a produces a magnetic field passing through the measuring tube essentially transversely to the measuring tube axis; at least one measuring electrode coupled with the medium and arranged in a region of the measuring tube lying essentially perpendicular to the magnetic field; and a control/evaluation unit, which delivers information concerning volume- or mass-flow of the medium in the measuring tube on the basis of a measurement voltage induced in the at least one measuring electrode. In order to keep costs for the magneto-inductive flow measuring device low, the measuring tube is embodied as one-piece and the first end region and the second end region of the measuring tube are flared.
Type:
Application
Filed:
August 31, 2007
Publication date:
November 25, 2010
Applicant:
Endress + Hauser Flowtec AG
Inventors:
Antonio Magliocca, Alexander Stunzi, Oliver Graf
Abstract: In a method for determining an output value of a sensor of automation technology, in a case in which the sensor has a non-linear characteristic curve K, which is pointwise specified, help points Hj are additionally produced according to a simple calculational specification. The output value is obtained from the input value via an interpolation of at least two points of the characteristic curve.
Abstract: A magneto-inductive flow measuring device, including: A measuring tube, through which a medium flows essentially directed along a measuring tube axis; a magnet arrangement, which produces an alternating magnetic field passing through the measuring tube essentially perpendicularly to the measuring tube axis; two measuring electrodes arranged essentially on a line directed essentially perpendicularly to the measuring tube axis and to the magnetic field; and a control/evaluation unit, which determines volume, or mass, flow of the medium through the measuring tube on the basis of a measurement voltage tapped on the measuring electrodes. In order to detect an error state at the flow measuring device early, the control/evaluation unit determines current, actual, settling time to reach a stable measurement state of the measuring device.
Abstract: A flow sensor includes: A measuring tube for the conveying of an electrically conductive fluid; a magnetic circuit arrangement arranged on the measuring tube for producing and guiding a magnetic field, which induces an electric field in the flowing fluid; and measuring electrodes for the tapping of a voltage of the electric field. The measuring tube includes a carrier tube and liner, especially a tubular liner, of insulating material, accommodated in a lumen of the carrier tube. A support skeleton may serve for stabilization is embedded in the liner.
Type:
Grant
Filed:
December 2, 2004
Date of Patent:
November 2, 2010
Assignee:
Endress + Hauser Flowtec AG
Inventors:
Fred Kappertz, Frank Voigt, Daniel Wild
Abstract: 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.
Type:
Application
Filed:
December 9, 2008
Publication date:
October 14, 2010
Applicant:
Endress + Hauser Flowtec AG
Inventors:
Andreas Berger, Michal Bezdek, Frank Wandeler, Achim Wiest
Abstract: A measuring system having a measuring transducer, which generates primary signals influenced by at least one measured variable characterizing the flowing medium; an evaluating circuit electrically coupled with the measuring transducer and processing primary signals delivered by the measuring transducer to measured values. The measuring transducer includes: at least one measuring tube, which serves for conveying medium to be measured; an exciter mechanism acting on the measuring tube for causing the at least one measuring tube to vibrate; as well as a sensor arrangement serving for registering oscillations of the measuring tube. A first oscillation sensor, a first primary signal of the measuring transducer representing vibrations of the measuring tube, by means of a second oscillation sensor spaced from the first oscillation sensor. A third oscillation sensor arranged on the measuring tube and spaced both from the first oscillation sensor as well as also from the second oscillation sensor.
Abstract: The measuring system of the invention comprises: A measuring transducer of vibration-type, through which medium flows during operation and which serves for producing oscillatory signals dependent on a viscosity of the flowing medium and/or a Reynolds number of the flowing medium; as well as a transmitter electronics electrically coupled with the measuring transducer for driven the measuring transducer and for evaluating oscillatory signals delivered by the measuring transducer.
Type:
Application
Filed:
March 11, 2010
Publication date:
October 7, 2010
Applicant:
Endress + Hauser Flowtec AG
Inventors:
Ennio Bitto, Alfred Rieder, Martin Anklin-Imhof, Christof Huber, Michael Kirst
Abstract: The measuring system of the invention comprises: A measuring transducer of vibration-type, through which medium flows during operation and which serves for producing oscillatory signals dependent on a viscosity of the flowing medium and/or a Reynolds number of the flowing medium; as well as a transmitter electronics electrically coupled with the measuring transducer for driven the measuring transducer and for evaluating oscillatory signals delivered by the measuring transducer.
Type:
Application
Filed:
March 11, 2010
Publication date:
September 30, 2010
Applicant:
Endress + Hauser Flowtec AG
Inventors:
Ennio Bitto, Alfred Rieder, Martin Anklin, Christof Huber, Michael Kirst
Abstract: The measuring transducer serves for registering at least one physical, measured variable of a flowable medium guided in a pipeline and/or for producing Coriolis forces serving for registering a mass flow rate of a flowable medium guided in a pipeline. For such purpose, the measuring transducer comprises: A transducer housing (71), of which an inlet-side, housing end is formed by means of an inlet-side, flow divider (201) having exactly four flow openings (201A, 201B, 201C, 201D) spaced, in each case, from one another and an outlet-side, housing end is formed by means of an outlet-side, flow divider (202) having exactly four flow openings (202A, 202B, 202C, 202D) spaced, in each case, from one another; as well as exactly four, straight, measuring tubes (181, 182, 183, 184) connected to the flow dividers (201, 202) for guiding flowing medium along flow paths connected in parallel.
Type:
Application
Filed:
March 11, 2010
Publication date:
September 30, 2010
Applicant:
Endress + Hauser Flowtec AG
Inventors:
Ennio Bitto, Alfred Rieder, Martin Anklin, Christof Huber
Abstract: A measuring transducer comprising: a transducer housing, of which an inlet-side, housing end is formed by means of an inlet-side, flow divider having exactly four flow openings spaced, in each case, from one another and an outlet-side, housing end is formed by means of an outlet-side, flow divider having exactly four flow openings spaced, in each case, from one another; as well as exactly four, straight, measuring tubes connected to the flow dividers for guiding flowing medium along flow paths connected in parallel. The measuring transducer includes an electromechanical exciter mechanism for producing and/or maintaining mechanical oscillations of the four measuring tubes. The measuring tubes are excitable pairwise to execute opposite phase bending oscillations in, in each case, a shared imaginary plane of oscillation.
Type:
Application
Filed:
March 11, 2010
Publication date:
September 23, 2010
Applicant:
Endress + Hauser Flowtec AG
Inventors:
Ennio Bitto, Alfred Rieder, Martin Anklin-Imhof, Christof Huber
Abstract: A measuring tube for a magneto-inductive flow meter is manufactured at least partially of a magnetically conductive material having a relative permeability, ?r, essentially greater than one.
Abstract: Signal processing circuit for voltage signals from electrodes of a magneto-inductive, flow measuring device, wherein two measuring electrodes are connected with a fully differentially working amplifier having two inputs and two outputs.