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| Number | Title | Issue Date |
| 7921736 | Magneto-inductive flow measuring device The invention relates to a magneto-inductive flow measuring device (1), including: A measuring tube (2), through which a medium (11) flows essentially in a direction of a measuring tube axis (16); a magnet arrangement (6, 7), which... | 04/12/2011 |
| 7416542 | Open circuit gravity-assisted uroflowmeter An open circuit gravity-assisted uroflowmeter has a urine collector having a generally open inlet in fluid communication with a sensing passage located at a lower elevation than the inlet, the sensing passage intersecting a magnetic field and having electrodes for d... | 08/26/2008 |
| 7353119 | Reduced noise sensitivity in magnetic flowmeter A magnetic flowmeter for measuring flow of a process fluid includes a coil configured to apply a magnetic field to the process fluid. Electrodes are arranged to sense a fluid voltage signal related to the applied magnetic field and fluid flow. An analog to digital c... | 04/01/2008 |
| 7280926 | Reduced noise sensitivity in magnetic flowmeter A magnetic flowmeter for measuring flow of a process fluid includes a coil configured to apply a magnetic field to the process fluid. Electrodes are arranged to sense a fluid voltage signal related to the applied magnetic field and fluid flow. An analog to digital c... | 10/09/2007 |
| 7270014 | Magnetoinductive flowmeter with sealed coils A magnetoinductive flowmeter for a medium (2), which is flowing through a measuring tube (1) and has a minimum electrical conductivity, having at least two electric coils (3a, 3b), which are arranged opposite one another on ... | 09/18/2007 |
| 7267012 | Electromagnetic flowmeter including electrodes and magnetic pole placed in proximity on one side of the outer wall An electromagnetic flowmeter designed to use a smaller excitation device and applicable to measurement on tubular channels of various sectional shapes. The electromagnetic flowmeter includes an excitation device for forming a magnetic field perpendicular to an outer... | 09/11/2007 |
| 7245230 | Dual magnetic field sensor unit The present inventions relate to a method and apparatus for adding Automatic Meter Reading (AMR) capabilities to utility meters that generate a magnetic field comprising magnetic flux that varies proportionally with the rate of resource consumption. The apparatus co... | 07/17/2007 |
| 7219562 | Angle sensor The invention provides an angular position sensor (1) comprising two magnets (32, 33) attached to the inside face of a rotor (31) for generating a magnetic field (50) and a magnetism detection device (43) disposed in the magnetic f... | 05/22/2007 |
| 7079958 | Method for operating a process-measuring device The process measuring device includes a flow sensor having a measuring tube, a sensor arrangement for producing a measurement signal, and an evaluation and operating circuit. The method serves to compensate for the effects of interfering potentials which are caused ... | 07/18/2006 |
| 7045983 | System for controlling motor speed by altering magnetic field of the motor The present invention provides a system for controlling the speed of a motor by altering the magnetic field of the motor. The system includes field modification module, and a motor having field windings and a rotor. The field windings are configured to receive a dri... | 05/16/2006 |
| 6928883 | Magnetic field coupler for fluid meter A magnetic field coupler has a plurality of magnetic poles with respective first ends located immediately adjacent a circular path of a rotating magnet in a meter. The magnetic poles have respective opposite ends located immediately adjacent a magnetic sensor in a m... | 08/16/2005 |
| 6853928 | Two-wire electromagnetic flowmeter In a two-wire electromagnetic flowmeter, an exciting coil generates a magnetic field in a direction perpendicular to the flowing direction of a fluid that flows through a measurement tube. A flow measuring output circuit adjusts an output current that flows to a pai... | 02/08/2005 |
| 6626048 | Magnetic flow meter A magnetic flow meter includes a cylindrical vessel within which electrodes are placed directly opposite each other about a magnetically permeable core. In that way, two flow channels are obtained in the vessel. A common magnetic field is applied across b... | 09/30/2003 |
| 6601447 | Acoustic anemometer for simultaneous measurement of three fluid flow vector components An apparatus for measuring a fluid flow velocity vector including a signal generator for generating an oscillating electrical signal, an acoustic transmitter for generating an acoustic signal proportional to the oscillating electrical signal; and at least... | 08/05/2003 |
| 6374667 | Volumetric physiological measuring system and method A system and method for measuring volumes and areas using electromagnetic induction techniques. A current is generated and fed into one of two coil assemblies to induce voltage into another coil assembly to provide accurate values for volume or area.... | 04/23/2002 |
| 6094992 | Method for electromagnetic flow measurement and a corresponding flowmeter This electromagnetic flow measuring method and the corresponding flowmeter serve to improve the measuring accuracy in the range of measuring errors below 1% in conjunction with acceptable costs. The meter includes a tube (1), in which the fluid to be meas... | 08/01/2000 |
| 6085599 | Magnetic flow sensor Sensors for measuring the flow rate of fluids flowing through or around a chamber. The chamber is formed using electrically insulating material through which there is an orthogonal alternating magnetic field provided by a mechanically repositioned permane... | 07/11/2000 |
| 5925830 | Electromagnetic flowmeter construction A magnetic induction flowmeter to measure the rate of flow of a fluid features a plastic flow element (10) with a tubular section (12) adjoining a flow channel (18). Electrodes (22) penetrate the tubular section (12) and are positioned at a distance from ... | 07/20/1999 |
| 5854429 | Magnetic protection device A protection device (70) for providing a drive system (60) for imparting rotary drive between two mechanical members (28, 44) about an axis by magnetic coupling with protection from an external magnetic field, said drive system including at least two axia... | 12/29/1998 |
| 5844143 | Electromagnetic flowmeter An electromagnetic flowmeter for measuring a flow rate of a fluid which flows through a measuring pipeline arranged in a controlled magnetic field. The electromagnetic flowmeter includes an electromagnet unit excited by an exciting current, for generating... | 12/01/1998 |
| 5691484 | Magnetic flow sensor Sensors for measuring the flow rate of fluids flowing through a chamber. The chamber is formed using electrically insulating material through which there is an orthogonal alternating magnetic field provided by a mechanically repositioned permanent magnet ... | 11/25/1997 |
| 5583299 | Conduit for an electromagnetic flowmeter using magnetic poles as ground electrodes A pair of electrodes and a pair of magnetic poles are mounted to a resin-made conduit body with each of those parts partly exposed to the lumen. The magnetic poles are formed by an electrically conductive material and serve also as ground electrodes by be... | 12/10/1996 |
| 5578763 | Electromagnetic flow meter A flow meter comprises a conduit adapted to conduct a flow of a fluid, a stop in the conduit, and a body that is movably received in the conduit, is normally kept in engagement with the stop by the fluid flow, and has at least a portion of a magnetically ... | 11/26/1996 |
| 5542301 | Electromagnetic flowmeters and method of producing electromagnetic flowmeters with slits to reduce eddy currents Reduced eddy current flowmeters and the methods of fabrication are disclosed. A pedestal is fixed inside an outer casing of the flowmeter and a core is fixed on the pedestal. In one embodiment, the outer casing to which the core is fixed is rotated by a p... | 08/06/1996 |
| 5461771 | Method of producing electromagnetic flowmeters with slits to reduce eddy currents A pedestal is fixed inside an outer casing of the flowmeter and a core is fixed on the pedestal. In one embodiment, the outer casing to which the core is fixed is rotated by a power roller, and slits are cut into the core by a laser beam apparatus. The cu... | 10/31/1995 |
| 5220841 | Electromagnetic fluid flow transducer An electromagnetic fluid flow transducer formed from an electromagnetic assembly having two electromagnet units and a tubular flow contact assembly to measure fluid flow velocity and fluid volume in ionic solutions. Each electromagnet unit includes a core... | 06/22/1993 |
| 4967603 | Inductive flow probe for measuring the flow velocity of a stream of liquid metal An inductive flow probe for measuring the flow velocity of a stream of liquid metal by insertion of the probe into the stream. The probe includes a probe tube having first and second regions therein, at least one permanent magnet disposed in the first reg... | 11/06/1990 |
| 4963857 | Translatable dual magnets A fluid flow detection device includes a fluid conduit, at least one magnet translatable by action of the flow of fluid (gas or liquid) in said conduit and a switch which is caused to change state between "on" and "off" relative to the position of the mag... | 10/16/1990 |
| 4694161 | Fluid flow and level detector The invention is directed to the use of magnets and fiber optics for detecting fluid flow and fluid levels. In general, the invention employs a permanent magnet movable by fluid flow or by the change of fluid levels which directly influences the degree of... | 09/15/1987 |
| 4653319 | Speed indicating means A Faraday transducer for a marine speed indicator is sealed in a cylindrical housing so that it can be mounted in a boat hull with its base flush with the hull. A horseshoe magnet sealed within the housing has its poles located against the base surface an... | 03/31/1987 |
| 4434667 | Permanent magnet flowmeter having improved output terminal means Disclosed is an improved permanent magnet flowmeter capable of withstanding bending stresses in the direction of induced emf signals. The flowmeter includes a unique terminal arrangement integrally formed with the flowmeter by trepanning opposing wall sec... | 03/06/1984 |
| 4358964 | Electromagnetic flowmeter An electromagnetic flowmeter for measuring the flow rate of electrically-conductive fluids through a conduit. A magnetic field generating device has a U-shaped iron core with a gap between the ends thereof and a coil on the core energizable to produce a m... | 11/16/1982 |
| 4346605 | Magnetic flowmeter for electrically conductive liquid A magnetic flowmeter includes first and second tube sections each having ls of non-magnetic material. The first tube is suitably connected to a process for passing a flow of an electrically conductive fluid to be measured. The second tube is established ... | 08/31/1982 |
| 4322982 | Flowmeter A flowmeter for measuring the flow of liquid metal in a conduit has a tubular drag body which extends diametrically into the conduit and terminates, with a closed end, within the flowing liquid. The drag body which generates vortexes in the flow, accommod... | 04/06/1982 |
| 4308753 | Low-power electromagnetic flowmeter A system for minimizing the power requirement of a flowmeter intended for long-term unattended deployment in a current flowing through a body of conductive fluid. The system includes a pair of electrodes in contact with the fluid, and a permanent magnet w... | 01/05/1982 |
| 4195515 | In line electromagnetic flow measurement transducer An electromagnetic type fluid flow meter for measurements of conductive fluids which utilizes an interchangeable disposable electrode sensor assembly with a common magnetic drive assembly. The electrode sensor assembly includes a tubular member adapted to... | 04/01/1980 |
| 4145924 | Method and apparatus for measuring the flow speed and the gas volume proportion of a liquid metal stream Method and apparatus for measuring the flow speed and the gas volume proportion of a stream of liquid metal wherein a magnetic probe is inserted into the stream of liquid metal and induces a first and second voltage according to Faraday's principle of ind... | 03/27/1979 |
| 4118981 | Flowmeter In a flowmeter, a permanent magnet is employed to apply a DC magnetic field to the liquid flowing through a pipe section. The magnet is mounted in a U-shaped housing adapted to fit over a nonmagnetic, nonconductive pipe section. Electrically conducting pr... | 10/10/1978 |
| 4036215 | Apparatus and method for eliminating perturbations of a kinetic origin in the blood flow waveform A measuring technique for eliminating the ballistic artifacts created by the mechanical body recoil upon the motion of the heart and the surge of blood within each heart cycle. The limb is restrained by mechanical devices which channel the kinetic energy ... | 07/19/1977 |
| 4008609 | Inductive flowmeter An inductive flowmeter with a permanent magnet is disclosed for electrically conductive liquids such as, for instance, sodium, comprising a pair of magnet poles which are disposed diametrically outside a pipe carrying the liquid, and electrodes which are ... | 02/22/1977 |
