Patent application number | Description | Published |
20090173169 | Measuring transducer of vibration-type - The measuring transducer includes: a measuring tube vibrating, at least at times, and serving for conveying medium to be measured; a counteroscillator, which is affixed to the measuring tube on an inlet-side, to form a first coupling zone, and to the measuring tube on an outlet-side, to form a second coupling zone; at least one oscillation exciter for driving at least the measuring tube; as well as at least one oscillation sensor for registering oscillations at least of the measuring tube. During operation, the measuring tube executes, at least at times and/or at least in part, bending oscillations about an imaginary bending oscillation axis, which imaginarily connects the two coupling zones with one another. The oscillation sensor includes a coil, especially a coil affixed to the counteroscillator, as well as, magnetically coupled with the coil, a permanent magnet, which is placed within a magnet cup composed at least partially of magnetically conductive material and which is held to a cup base, especially a cup base secured to the measuring tube. Additionally, it is provided in the measuring transducer of the invention that a cup wall of the magnet cup, especially an essentially circular-cylindrical and/or tubular, cup wall, especially a cup wall extending essentially in the direction of the counteroscillator, has at least one slit, especially a slit extending at least sectionally in the direction of oscillations of the measuring tube relative to the counteroscillator. | 07-09-2009 |
20090241646 | Viscometer - The viscometer provides a viscosity value (X | 10-01-2009 |
20100281998 | Method for detecting blockage in a cariolis flow measuring device - A method for detecting blockage of a measuring tube of a Coriolis flow measuring device, which has at least two measuring tubes. For this, the at least two measuring tubes are excited by at least one exciter to execute mechanical oscillations, mechanical oscillations of the measuring tubes are registered by at least one sensor and at least one measurement signal representing the mechanical oscillations is produced. At least one produced measurement signal is analyzed for the occurrence of a deviation of a resonance frequency of one measuring tube relative to a resonance frequency of the at least one other measuring tube. In case such a deviation occurs, blockage of a measuring tube is established. | 11-11-2010 |
20100281999 | Method for determining measuring tube wall thickness of a coriolis, flow measuring device - A method for determining tube wall thickness of at least one measuring tube of a Coriolis, flow measuring device, wherein the Coriolis, flow measuring device has an oscillatory system, which includes at least one measuring tube, and at least one exciter, by which the oscillatory system is excitable to execute mechanical oscillations. In the method, at least one excitation input variable of the at least one exciter and at least one response variable of oscillations of the oscillatory system caused thereby are registered. Additionally, a tube wall thickness of the at least one measuring tube is ascertained by inserting the excitation input variable and the response variable into a transfer equation. | 11-11-2010 |
20110094312 | Measuring transducer of vibration type - A measuring transducer of vibration type, especially a Coriolis mass flow meter, having a housing and a mass flow tube, wherein the mass flow tube is formed into a helix having a first loop and a second loop; wherein the mass flow tube has a securement element which affixes a peripheral point of the first loop relative to a neighboring peripheral point of the second loop; and wherein the mass flow tube has an oscillation exciter on a side lying opposite the securement element along the mass flow tube. The mass flow tube has provided between the oscillation exciter and the securement element at least one add-on part acting as a canceling mass. | 04-28-2011 |
20110113896 | Measuring system with a tube arrangement having two measuring tubes flowed through in parallel, as well as method for monitoring the arrangement - For monitoring the tube arrangement, the measuring system of the invention includes, connected to the transmitter electronics, a temperature measuring arrangement having a first temperature sensor for producing a temperature signal dependent on a temperature of a first of the measuring tubes of the tube arrangement and at least a second temperature sensor for producing a temperature signal dependent on a temperature of a second of the measuring tubes of the tube arrangement. In the method of the invention, it is provided that, in the case of medium flowing through the tube arrangement, a temperature difference existing between the at least two measuring tubes as a result plugging is ascertained and, in case the ascertained temperature difference deviates from a predetermined limit value for the temperature difference representing a non-plugged tube arrangement, a partial plugging of the tube arrangement, especially a plugging of exactly one of the measuring tubes, is signaled. | 05-19-2011 |
20110219857 | Viscometer - The viscometer provides a viscosity value (X | 09-15-2011 |
20120036941 | MAGNETO-INDUCTIVE FLOW MEASURING SYSTEM AND METHOD FOR OPERATING SUCH - A method for operating a magneto-inductive flow measuring system, wherein the magneto-inductive flow measuring system has a measuring tube, wherein measuring tube has a lumen for the conveying an at least slightly electrically conductive, measured substance, and wherein the magneto-inductive flow measuring system has a first and a second electrode electrically interacting with the measured substance. In a first diagnostic operation, an input voltage is applied between the first and second electrodes, wherein the input voltage produces an electrical current essentially within the lumen, and wherein the flow measuring system additionally has a third and a fourth electrode electrically interacting with the measured substance, wherein an output voltage falling between the third and fourth electrodes essentially due to the electrical current is determined, and wherein, by means of the output voltage, a state of the flow measuring system and/or a chemical and/or physical property of the measured substance is determined. | 02-16-2012 |
20120042732 | MEASURING SYSTEM HAVING A MEASURING TRANSDUCER OF VIBRATION-TYPE - A measuring system comprises: a measuring transducer of vibration type, through which fluid flows during operation, and which produces oscillation signals corresponding to parameters of the flowing fluid; as well as a transmitter electronics (TE), which is electrically coupled with the measuring transducer, and serves for activating the measuring transducer and for evaluating oscillation signals delivered by the measuring transducer. The measuring transducer (MT) includes: At least one measuring tube ( | 02-23-2012 |
20120060626 | METHOD FOR DETECTING PLUGGING IN A CORIOLIS FLOW MEASURING DEVICE - A method for detecting complete or partial plugging of a measuring tube of a Coriolis flow measuring device, which is insertable into a pipeline, and which has a measuring transducer of the vibration type having at least two measuring tubes connected for parallel flow. The method includes, in such case, the steps of measuring a subset flow occurring in a subset of the measuring tubes, and comparing a subset flow value obtained from this measurement with a reference value to be expected for this subset. The reference value is, in such case, determined from a total mass flow determined in the context of a Coriolis mass flow measuring. Additionally, the method includes the step of detecting plugging of at least one measuring tube of the measuring transducer, if the subset flow value deviates from the reference value by more than a limit value. | 03-15-2012 |
20120123705 | Measuring system having a measuring transducer of vibration-type - A measuring system comprises: a measuring transducer; transmitter electronics; at least one measuring tube; and at least one oscillation exciter. The transmitter electronics delivers a driver signal for the at least one oscillation exciter, and for feeding electrical, excitation power into the at least one oscillation exciter. The driver signal, has a sinusoidal signal component which corresponds to an instantaneous eigenfrequency, and in which the at least one measuring tube can execute, or executes, eigenoscillations about a resting position. The eigenoscillations have an oscillation node and in the region of the wanted, oscillatory length exactly one oscillatory antinode. The driver signal has, a sinusoidal signal component with a signal frequency, which deviates from each instantaneous eigenfrequency of each natural mode of oscillation of the at least one measuring tube, in each case, by more than 1 Hz and/or by more than 1% of said eigenfrequency. | 05-17-2012 |
20120222479 | METHOD FOR DETECTING PLUGGING IN A CORIOLIS FLOW MEASURING DEVICE - A method for detecting plugging of a measuring tube. Heat is supplied to a medium conveyed in a first measuring tube by means of at least one heating element, or heat is removed from the medium conveyed in a first measuring tube by means of at least one cooling element. At least one temperature sensor, which is thermally coupled to the medium conveyed in the first measuring tube, temperature is registered. Additionally, a first comparison variable, which is characteristic for heat transport by the medium in the first measuring tube, is determined based on the supplying of heat or removing of heat, as well as on the temperature registering, and this comparison variable is compared with a reference variable. Plugging of at least one measuring tube of the measuring transducer is detected if the first comparison variable deviates from the reference variable by more than a limit value. | 09-06-2012 |
20120255370 | Method for Trimming a Tube - A method for trimming a tube with at least one stiffening element placed on its tube wall to a target bending stiffness, wherein the tube has first an interim bending stiffness, which is greater than the target bending stiffness. For the purpose of reducing the interim bending stiffness of the tube to the target bending stiffness, it is provided in the method of the invention that volume of the stiffening element is removed, for instance, by means of a laser. | 10-11-2012 |
20120255371 | FREQUENCY TUNING METHOD FOR A TUBE ARRANGEMENT - The method serves for changing at least one eigenfrequency of a tube arrangement formed by means of at least one tube particularly, however, also for tuning the interim eigenfrequency to a desired eigenfrequency deviating therefrom and referred to as a target eigenfrequency. The tube has a tube wall, of metal and/or an at least sectionally circularly cylindrical, tube wall as well as a stiffening element of metal and/or a stiffening element of material connectable with the material of the tube by material bonding and/or a platelet shaped, stiffening element, placed on the tube wall and co-determining the interim eigenfrequency of the tube arrangement. For the purpose of changing the interim eigenfrequency, it is provided, that volume is removed from the stiffening element, for instance, by means of laser. | 10-11-2012 |
20120310545 | MEASURING DEVICE ELECTRONICS FOR A MEASURING DEVICE AS WELL AS MEASURING DEVICE FORMED THEREWITH - A measuring device electronics comprises a processor and two clock signal generators. One clock signal generator serves for producing a working clock signal, and also for producing a reference clock signal which is dependant on the working clock signal. The other clock signal generator, serves for producing a second reference clock signal, which is independent of the working clock signal. Based on the two independent reference clock signals, a frequency difference, can, to the extent that such is present, be ascertained during operation of the measuring device electronics or of the measuring device formed therewith. The frequency difference, represents a difference between the instantaneous clocking frequency of the first reference clock signal and the instantaneous clocking frequency of the second reference clock signal, and, in this respect, represents a measure for a deviation of an instantaneous clocking frequency, from the nominally predetermined clocking frequency, of the working clock signal. | 12-06-2012 |
20130031973 | METHOD FOR DETECTING ACCRETION OR ABRASION IN A FLOW MEASURING DEVICE - A method for detecting accretion or abrasion on a first measuring tube of a flow measuring device. A first temperature as a function of time is registered via a first temperature sensor, which is arranged on the first measuring tube in such a manner that, between the first temperature sensor and the medium, at least one measuring tube wall of the first measuring tube is embodied. Parallel in time, a second reference temperature as a function of time is registered by a second temperature sensor, which is spaced from the first temperature sensor and thermally coupled to the medium. Therefrom, at least one variable characteristic is determined, and accretion or abrasion on the first measuring tube is detected, if the at least one determined characteristic variable or a variable derived therefrom deviates by more than a limit value from a predetermined reference variable. | 02-07-2013 |
20130104657 | Ultrasonic Particle Measuring System | 05-02-2013 |
20140144246 | METHOD FOR ASCERTAINING FLOW OF A MEDIUM THROUGH A MEASURING TUBE - A method and flow measuring device for ascertaining flow of a medium through a measuring tube based on at least a first measurement signal, which depends at least on the flow velocity of the medium in the measuring tube, wherein the first measurement signal is registered, wherein an additional, second measurement signal is registered, which depends on the flow cross sectional area of the medium in the measuring tube and is independent of the flow velocity of the medium in the measuring tube, and wherein flow is ascertained as a function of the first and second measurement signals. | 05-29-2014 |
20150040647 | VISCOMETER - The viscometer provides a viscosity value (X | 02-12-2015 |
Patent application number | Description | Published |
20080250867 | Method for operating a magneto-inductive flow measuring device - A medium to be measured is allowed to flow through a measuring tube of a flow meter and a magnetic field passing at least sectionally with a time-varying intensity through the medium in the measuring tube is produced in such a manner that a measurement voltage is induced at least at times, especially in a clocked manner, in the medium. The measurement voltage induced in the medium is tapped, at least at times, by means of an electrode pair formed by first and second measuring electrodes for producing an analog measurement signal corresponding with the measurement voltage, and a flow-type of the medium located in the measuring tube, as determined by an instantaneous flow profile and/or an instantaneous composition of the flowing medium, is ascertained with application of a digital signal representing the at least one measurement signal. Starting on the basis that the measurement signal has a wanted-portion corresponding essentially with an instantaneous flow velocity of the medium and a noise portion influenced at least partially by existent disturbances in the flowing medium, ascertained are: a noise spectrum of the measurement signal corresponding with the noise portion; and, with application at least of a part of the noise spectrum, a state value signaling, at least qualitatively, at least one flow-type present in the measuring tube. | 10-16-2008 |
20080262796 | Method for predictive maintenance and/or method for determining electrical conductivity in a magneto-inductive flow-measuring device - A method for predictive maintenance for a magneto-inductive flow-measuring device and/or to a method for determining electrical conductivity of a medium flowing through a magneto-inductive flow-measuring device, wherein the magneto-inductive flow-measuring device includes a magnet system, which produces a magnetic field passing through the measuring tube essentially transversely to a measuring tube axis; at least two measuring electrodes coupled with the medium, having a defined rest potential and being arranged in a region of the measuring tube lying essentially perpendicularly to the magnetic field; and a control/evaluation unit, which delivers information concerning volume- or mass-flow of the medium on the basis of measurement voltage induced in the measuring electrodes. A first exciting signal with a first frequency (f | 10-23-2008 |
20080288933 | Method for start-up and/or reconfiguration of a programmable field-device - An installed hardware of a measuring field device includes at least one transducer reacting during operation to a chemical and/or physical, measured variable of a pourable and/or flowable medium, especially a pourable or flowable bulk good, liquid, gas or the like, as well as a microcomputer communicating during operation with the transducer. The field device is first installed by means of the transducer on, and/or in a process vessel serving for conveying and/or holding pourable and/or flowable media for forming a process measuring point. Thereafter, the microcomputer is booted and a basic software held in a memory provided within the field device for providing, at least in part, basic functionalities of the field device is activated in such a manner that the basic software is executable by means of the microcomputer so that, in the interaction of basic software and hardware installed in the field device, the basic functionalities of the field device are available. Additionally, at least one initial identification parameter set held at least temporarily in the field device and at least approximately identifying the process measuring point is transferred, with application of basic software executed in the microcomputer, to a data processing system superordinated externally of the field device, and at least one upgrade software providing custom functionalities for the field measuring device going beyond the basic functionalities and held in a second memory, is selected from an ensemble of software products, taking into consideration the at least one, initial identification parameter set. A selected upgrade software fitted to the process measuring point is then transferred into a third memory provided within the field measuring device and then activated in such a manner that it is executable by means of the microcomputer, so that, in interaction of upgrade software and hardware installed in the field device, custom functionalities of the field measuring device are available. | 11-20-2008 |
20090139349 | Vibration type measurement transducer - A measurement transducer includes: At least one interconnected system formed by means of at least two components, especially components of metal. At least the first component of the interconnected system is, in such case, embodied as a composite, formed part composed of at least two materials, which differ from one another with respect to at least one physical and/or chemical property, especially a material density, melting temperature, coefficient of thermal expansion and/or modulus of elasticity, etc. As a result of using at least one composite component, the at least two components of the interconnected system can be bonded together lastingly and reliably, especially by means of welding, such being true especially also for the case in which the interconnected system is a bi-, or poly-, metal, interconnected system. | 06-04-2009 |
20090145244 | Measuring transducer of vibration-type - A measuring transducer includes: a measuring tube vibrating at least at times and serving for conveying medium to be measured; a counteroscillator, which is affixed to the measuring tube on an inlet-side, to form a first coupling zone, and to the measuring tube on an outlet-side, to form a second coupling zone; an exciter mechanism for driving at least the measuring tube; as well as a sensor arrangement for registering oscillations at least of the measuring tube. During operation, the measuring tube executes, at least at times and/or at least in part, bending oscillations about an imaginary bending oscillation axis, which imaginarily connects the two coupling zones with one another. Additionally, at least a first spring element and a second spring element are included, with each of the at least two spring elements being affixed to the measuring tube and the counteroscillator spaced both from each of the two coupling zones as well as also from the exciter mechanism. | 06-11-2009 |