| KROHNE AG Patent applications |
| Patent application number | Title | Published |
|---|
| 20120079891 | CORIOLIS MASS FLOWMETER - A Coriolis mass flowmeter having at least four measuring tubes running parallel, the measuring tubes being joined in pairs into a oscillation unit by being inserted in openings in a holding device ( | 04-05-2012 |
| 20120017698 | ELECTROMAGNETIC FLOWMETER - An electromagnetic flowmeter having a measuring tube, at least one magnetic device and at least two electrodes. The measuring tube having an inlet section with an inlet section terminal cross section, an outlet section with an outlet section terminal cross section, a recess formed between the inlet section and the outlet section with a recess cross section that is wider than the inlet section terminal cross section and the outlet section terminal cross section, and an internal coating positioned in the recess. The layer thickness of the internal coating is chosen to be appropriately thick in order to guarantee electrical insulation and to arrange the internal coating in the recess such that it is protected from damage by flowing measurement fluid. | 01-26-2012 |
| 20110259124 | CORIOLIS MASS FLOWMETER - A Coriolis mass flowmeter ( | 10-27-2011 |
| 20110239730 | CALIBRATION DEVICE FOR MASS FLOW METERS - A calibration device for mass flow meters including a test piece measuring section into which the mass flow meter test piece to be calibrated can be inserted, a device for creating a flow of a medium through the test piece measuring section and a temperature-measuring device positioned in the test piece measuring section for detecting the temperature of the medium. The temperature-measuring device is position in the flow such that the flow is disturbed as little as possible, while at the same time being capable of highly-accurate detection of the temperature of the flowing medium. In particular, the temperature-measuring device is an ultrasonic temperature-measuring device that is configured to emit an ultrasonic signal into the medium and determine the temperature of the medium by measuring a speed of the emitted ultrasonic signal. | 10-06-2011 |
| 20110219872 | METHOD FOR OPERATING A DENSITY MEASURING DEVICE AND DEVICE FOR DENSITY MEASUREMENT - A method for operating a density measuring device having a measuring tube filled with the medium for determining the density of the medium, in which the measuring tube is incited to vibrate, the frequency of the vibration determined and the density of the medium being calculated from the determined frequency and other parameters which determine the physical-geometrical properties of the measuring tube. In particular, at least one mechanical stress of the measuring tube is determined, and with the obtained mechanical stress value, the influence of the mechanical stress of the measuring tube and/or the influence of the pressure in the medium on the determined density of the medium are or is—at least partially—taken into consideration or compensated. | 09-15-2011 |
| 20110184667 | METHOD FOR DETERMINING AT LEAST ONE CHARACTERISTIC FOR THE CORRECTION OF MEASUREMENTS OF A CORIOLIS MASS FLOWMETER - A method for determining at least one characteristic for the correction of measurements of a Coriolis mass flowmeter which is characterized by an increased accuracy and a low error rate while determining the characteristic is implemented by detecting values of a measurand during constant flow with the reading sensors, calculating at least one location parameter from the detected values, an calculating at least one dispersion parameter from the detected values and the location parameter. The detection of additional values and the calculation of the location parameter and dispersion parameter from the existing and additional values is carried out until the dispersion parameter reaches a threshold value, and then, the location parameter corresponding to the dispersion parameter is used as the characteristic for the correction of the reading of the Coriolis mass flowmeter. | 07-28-2011 |
| 20110154914 | CORIOLIS MASS FLOWMETER - A Coriolis mass flowmeter having at least one measuring tube assembly ( | 06-30-2011 |
| 20110138930 | CORIOLIS MASS FLOWMETER - A Coriolis mass flowmeter having a measuring tube that can be excited to oscillation and a magnet assembly ( | 06-16-2011 |
| 20100326204 | METHOD FOR INSTALLING AND OPERATING A MASS FLOWMETER AND MASS FLOWMETER - A method for installing and operating a Coriolis mass flowmeter operating having a measuring tube, wherein the measuring tube is excited to vibrate, a phase shift of the vibration of the measuring tube which is dependent on the mass flow of the measuring tube or a corresponding time difference is determined, the temperature of the measuring tube is determined and the corresponding mass flow is calculated using the determined time difference and the determined temperature by means of a computation rule. Highly accurate measurements are possible in that in the computation rule, at least one known theoretical or empirical material temperature dependence influencing the mass flow is taken into account by determining a device-specific temperature dependence of the mass flowmeter influencing the mass flow through a subsequent calibration process and the known theoretical or empirical material temperature dependence and the device-specific temperature dependence are used in determining the mass flow. | 12-30-2010 |
| 20100132479 | MAGNETIC-INDUCTIVE FLOWMETER - A magnetic-inductive flowmeter for measuring the rate of flow of a flowing medium, having a measurement line, a magnetic field generating means for generating a magnetic field which at least partially penetrates the measurement line, and two measurement electrodes, and an electrically insulating cover layer provided at least partially over the inside of the measurement line, the measurement electrodes being strip-shaped having a length in a peripheral direction of the measurement line of between about just under one fourth of the periphery of the measurement line to about just over half the periphery of the measurement line and being exposed to the interior of the measurement line to be in direct, contact with the flowing medium. The measurement electrodes can be made of the same material or a similar material as the cover layer, but having a much higher electrical conductivity than the material of the cover layer. | 06-03-2010 |
| 20100132478 | ELECTROMAGNET FLOWMETER - An electromagnetic flowmeter for mass flow measurement of a flowing medium having a measuring tube, a magnetic field generator for generating a magnetic field at least partially passing through the measuring tube, having two electrodes for tapping into a measurement voltage induced in the flowing medium and having a housing incorporating the measuring tube, the magnetic field generator and the electrodes, wherein the measuring tube has a cross section that varies along its length and the cross section in the mid-section of the measuring tube is smaller than at its ends, preferably the cross section of the measuring tube being rectangular in its mid-section, optionally also square, and wherein the housing preferably has a circular cross section. At least one reinforcement, preferably two, is provided in the mid-section of the measuring tube joining the measuring tube and the housing; | 06-03-2010 |
| 20100126282 | ELECTROMAGNETIC FLOWMETER - An electromagnetic flowmeter for mass flow measurement of a flowing medium having a measuring tube ( | 05-27-2010 |
| 20100050783 | MASS FLOWMETER - A mass flowmeter is provided which operates on the Coriolis principle, having (1) at least four measurement tubes which can oscillate and through which a medium can flow, (2) at least one oscillation generator for excitation of the oscillations of the measurement tube, and (3) at least one oscillation sensor for detection of the excited oscillations of the measurement tubes. The measurement tubes are preferably arranged closely in parallel such that the flow cross section covered by the measurement tubes covers as small an area as possible. The use of four or more compactly arranged measurement tubes advantageously allows for the measurement of a high mass flow rate with measurement tubes having a relatively small cross section and length, resulting in a mass flowmeter having compact length and width dimensions, and which requires only a relatively low energy oscillation generator for excitation of the oscillations of the measurement tubes. | 03-04-2010 |
| 20100011867 | ULTRASONIC TRANSDUCER - An ultrasonic transducer for installation in an instrument housing, the ultrasonic transducer having a transducer housing and a housing fixture, the transducer housing being put under pressure by a medium in its installed state on its emitting and/or receiving side. To provide an ultrasonic transducer for installation in an instrument housing, which implements a measure for avoiding crosstalk of ultrasonic signals and avoids the disadvantages known from the prior art—at least partially, the ultrasonic transducer is wherein the transducer housing indirectly forms at least one contact area in its installed state with the housing fixture, the transducer housing and the housing fixture being at least indirectly pressed against one another in a first contact area with existing, but as slight as possible, surface pressure by a pre-loading mechanism. | 01-21-2010 |
| 20100011866 | ULTRASONIC TRANSDUCER - An ultrasonic transducer with a housing having an ultrasonic window in a first region of the housing for transmitting ultrasonic waves, and a transducer element located in the housing adjacent to the ultrasonic window. To prevent ultrasonic waves from being transmitted as housing waves between the first region of the housing, by way of at least one intermediate second region of the housing, to a third region of the housing on opposite side of the second region from the first region, in the second region of the housing, at least two weakly coupled mechanical resonators are provided which are arranged essentially in secession in the propagation direction of the housing waves. | 01-21-2010 |
| 20090266177 | CORIOLIS MASS FLOWMETER - A Coriolis mass flowmeter has a measuring tube that can be excited to oscillation, an oscillation driver and/or an oscillation sensor, wherein the oscillation driver and/or the oscillation sensor has a permanent magnet. The permanent magnet is arranged in a magnet holder so that a sure and simple fixation of the permanent magnet is achieved. | 10-29-2009 |
| 20090071252 | ULTRASONIC PROBE HEAD - An ultrasonic probe head, in particular for an ultrasonic flow meter having a housing and an ultrasonic transducer in the housing, wherein ultrasonic signals can be created and/or detected by the ultrasonic transducer and the ultrasonic signals from the ultrasonic transducer can be emitted and/or received via an ultrasonic window. A thin, relatively flexible solid interface layer is provided between the ultrasonic transducer and the ultrasonic window, the surface of the ultrasonic window having contact with the solid interface layer has a specified roughness and the ultrasonic transducer is impacted with a force, wherein the material of the solid interface layer and the ultrasonic window, the specified roughness of the surface of the ultrasonic window and the force are attuned to one another so that the solid interface layer nestles into the ultrasonic window of the housing at least also by plastic deformation. Thus, a passage is created between the ultrasonic transducer and the ultrasonic window that eliminates, at least partially, the known disadvantages between the ultrasonic transducer and the ultrasonic window. | 03-19-2009 |
