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| Number | Title | Issue Date |
| 7819021 | Fluid meter The invention relates to a fluid meter (1) having a measuring tube housing (2), a measuring zone (3) inside the measuring tube housing (2), an ultrasonic transducer configuration of at least one ultrasonic transducer (4 and/or 5... | 10/26/2010 |
| 7637171 | Ultrasonic flow sensor with quadrature demodulation An ultrasonic flow sensor, in particular for determining the flow velocity of a medium flowing through a pipeline, has at least one ultrasonic converter for transmitting and/or receiving ultrasonic signals, an oscillator, which is connected with the ultrasonic conve... | 12/29/2009 |
| 7369230 | Apparatus and method for measuring particulate flow rate An apparatus for measuring the rate of flow of a volume of particulate material comprising a transparent tube of known cross-sectional area, means for supplying a flow of particulate material through the transparent tube, and an optical signal sensor for receiving a... | 05/06/2008 |
| 7367239 | Piezocable based sensor for measuring unsteady pressures inside a pipe A piezocable-based sensor for measuring unsteady pressures inside a pipe comprises at least one cable extending around at least a portion of a circumference of the pipe. The cable includes a first electrical conductor, a piezoelectric material disposed around the fi... | 05/06/2008 |
| 7360448 | Ultrasonic flow sensor having reflecting interface An ultrasonic flow sensor that includes a conduit having a length, a first ultrasonic transducer disposed at a first position along the length of the conduit, a second ultrasonic transducer disposed at a second position along the length of the conduit, the second po... | 04/22/2008 |
| 7363174 | Apparatus and method for measuring a fluid flow rate profile using acoustic doppler effect An apparatus and method for measuring a flow velocity profile of fluid traveling in a pipe or conduit uses an ultrasonic wave transmitted from an ultrasonic wave transducer mounted at an angle on the outside of a pipe using a wedge, and made incident onto the fluid ... | 04/22/2008 |
| 7359803 | Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe An apparatus 10,70 and method is provided that includes a spatial array of unsteady pressure sensors 15-18 placed at predetermined axial locations X1-XN disposed axially along a pipe 14 for measuring at least one par... | 04/15/2008 |
| 7357021 | Methods of monitoring downhole conditions Methods of monitoring various downhole conditions are described, including a system for determining and/or identifying the flow of fluid in a well, determining sand production in a well, identifying localized events in a well, determining the apparent flow velocity ... | 04/15/2008 |
| 7328624 | Probe for measuring parameters of a flowing fluid and/or multiphase mixture A probe 10,170 is provided that measures the speed of sound and/or vortical disturbances propagating in a single phase fluid flow and/or multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor ratio, ... | 02/12/2008 |
| 7322251 | Method and apparatus for measuring a parameter of a high temperature fluid flowing within a pipe using an array of piezoelectric based flow sensors A method, apparatus and system are provided to measure the process flow of a fluid or medium traveling in a pipe. The system and apparatus feature a standoff and piezoelectric-based sensor arrangement having a plurality of standoffs arranged on a pipe and a pluralit... | 01/29/2008 |
| 7308820 | Piezocable based sensor for measuring unsteady pressures inside a pipe A piezocable based sensor for measuring unsteady pressures inside a pipe comprises a cable wrapped around the pipe and an outer band compressing the cable towards the pipe. The cable provides a signal indicative of unsteady pressure within the pipe in response to ex... | 12/18/2007 |
| 7295933 | Configurable multi-function flow measurement apparatus having an array of sensors A configurable multi-function flow measurement apparatus is provided that can selectably function to measure the speed of sound propagating through a fluid flowing within a pipe and/or to measure pressures disturbances (e.g. vortical disturbances or eddies) moving w... | 11/13/2007 |
| 7290450 | Process diagnostics A diagnostic device for use in a industrial process includes monitoring electronics or diagnostic circuitry configured to diagnose or identify a condition or other occurrence in the industrial process. The system can be implemented in a process device such as a flow... | 11/06/2007 |
| 7280927 | Method and system for providing a linear signal from a mass airflow and/or liquid flow transducer A method and system for providing a linear signal from a flow transducer. A non-linear raw signal can be obtained from a mass flow transducer. An approximated error comprising a discrete sinusoidal function incremented by a variable and selectable omega value can th... | 10/09/2007 |
| 7278481 | Method and system for producing an oil and gas mixture through a well A method and system are provided for controlling the production of oil and gas in a well such that the well operates at the edge of gas coning. Thereto the flow rate and/or pressure of the produced well effluents are controlled by a dynamically controlled choke such... | 10/09/2007 |
| 7277802 | Method and system for providing a linear signal from a mass flow transducer A method and system for providing a linear signal from mass flow transducer approximates the error from the original raw signal using discrete sine functions and subtracts the approximated error from the original raw signal. The method and system can be implemented ... | 10/02/2007 |
| 7275421 | Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe An apparatus 10 and method is provided that includes a spatial array of unsteady pressure sensors 15-18 placed at predetermined axial locations x1-xN disposed axially along a pipe 14 for measuring at least one parame... | 10/02/2007 |
| 7253742 | Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensors An apparatus for measuring at least one parameter associated with a fluid flowing within a pipe includes a spatial array of pressure sensors disposed at different axial locations x1. . . xN along the pipe. Each of the pressure sensors provides ... | 08/07/2007 |
| 7249885 | Heat flux measuring device for pressure pipes, method for producing a measuring device, method for monitoring an operating state of a heat exchanger, heat exchanger and method for measuring a heat flux A measuring device for a heat exchanger includes a heat exchanger pressure pipe having a pipe wall with a circumference, and an indentation extending over and deforming a portion of the circumference. At least one thermocouple is disposed eccentrically in the portio... | 07/31/2007 |
| 7197942 | Apparatus for measuring velocity and flow rate of a fluid having a non-negligible axial mach number using an array of sensors An apparatus 10 and method is provided that includes a spatial array of unsteady pressure sensors 15–18 placed at predetermined axial locations x1–xN disposed axially along a pipe 14 for measuring the velocity and volum... | 04/03/2007 |
| 7197938 | Contact-based transducers for characterizing unsteady pressures in pipes A sensor head characterizes unsteady pressures in a fluid flowing within a pipe, as may be caused by one or both of acoustic waves propagating through the fluid within the pipe and/or pressure disturbances that convect with the fluid flowing in the pipe. The sensor ... | 04/03/2007 |
| 7188519 | Device and method for measuring the flow and at least one material parameter of a fluid For measuring the flow and the thermal conductivity of a fluid, a sensor is used, which has a first temperature detector for measuring a first temperature and a second temperature detector for measuring a second temperature. A heating is arranged between the tempera... | 03/13/2007 |
| 7165464 | Apparatus and method for providing a flow measurement compensated for entrained gas A apparatus 10,110 is provided that measures the speed of sound and/or vortical disturbances propagating in a fluid or mixture having entrained gas/air to determine the gas volume fraction of the flow 12 propagating through a pipes and compensating or ... | 01/23/2007 |
| 7152460 | Apparatus and method for compensating a coriolis meter A flow measuring system is provided that provides at least one of a compensated mass flow rate measurement and a compensated density measurement. The flow measuring system includes a gas volume fraction meter in combination with a coriolis meter. The GVF meter measu... | 12/26/2006 |
| 7150202 | Method and apparatus for measuring characteristics of core-annular flow An apparatus and method are disclosed wherein at least one parameter associated with a core-annular flow (CAF) in a pipe is measured by sensing unsteady pressures associated with undulations formed at the interface of a core region and an annular region in the CAF a... | 12/19/2006 |
| 7146864 | Apparatus having a multi-band sensor assembly for measuring a parameter of a fluid flow flowing within a pipe An apparatus measures the speed of sound and/or vortical disturbances propagating in a fluid flow to determine a parameter of the flow propagating through a pipe. The apparatus includes a sensing device that includes an array of pressure sensors used to measure the ... | 12/12/2006 |
| 7139667 | Method for calibrating a volumetric flow meter having an array of sensors A method and apparatus are provided for calibrating a flow meter having an array of sensors arranged in relation to a pipe that measures a flow rate of a fluid flowing in the pipe. The method features the step of calibrating the flow rate using a calibration correct... | 11/21/2006 |
| 7127360 | Dual function flow measurement apparatus having an array of sensors A dual function flow measurement apparatus is provided that combines the functionality of an apparatus that measures the speed of sound propagating through a fluid flowing within a pipe, and measures pressures disturbances (e.g. vortical disturbances or eddies) movi... | 10/24/2006 |
| 7110893 | Method and apparatus for measuring a parameter of a fluid flowing within a pipe using an array of sensors Various methods are described which increase the efficiency and accuracy of a signal processor in determining parameters of a fluid using signals output by a spatial array of sensors disposed along a pipe. In one aspect, parameters used for calculating the temporal ... | 09/19/2006 |
| 7096719 | Apparatus for measuring parameters of a flowing multiphase mixture An apparatus 10 is provided that measures the speed of sound propagating in a multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor ratio, mass flow rate, enthalpy and volumetric flow rate of the fl... | 08/29/2006 |
| 7093483 | Differential pressure wind meter A wind meter comprising a plurality of micro-electro-mechanical (MEM) differential pressure sensors positioned in a lobed housing, with an even number of circumferential ports arranged in an equally-spaced, circular pattern at the distal ends of the lobes of the hou... | 08/22/2006 |
| 7077012 | Wedge and wedge unit for use in ultrasonic doppler flow meter A wedge unit according to the present invention is used for an ultrasonic Doppler flow meter, being mounted on the outer wall of a pipe in which a fluid flows, supplying an ultrasonic wave to the fluid, receives the reflected wave and supplies the reflected wave to ... | 07/18/2006 |
| 7062976 | Apparatus and method of measuring gas volume fraction of a fluid flowing within a pipe An apparatus 10,110 is provided that measures the speed of sound or acoustic disturbances propagating in a fluid or mixture having entrained gas/air to determine the gas volume fraction of the flow 12 propagating through a pipe 14. The apparatus... | 06/20/2006 |
| 7056014 | Flexible wired circuit board for temperature measurement A flexible wired circuit board for temperature measurement that can provide an accurate temperature measurement even when placed in a high-temperature atmosphere and can also be provided at a reduced cost. In the flexible wired circuit board for temperature measurem... | 06/06/2006 |
| 7058549 | Apparatus and method for measuring unsteady pressures within a large diameter pipe An apparatus 10 is provided that includes a spatial array of at least two unsteady pressure sensors 18–21 placed at predetermined axial locations x1–xN disposed axially along a pipe 14 for measuring at least one paramet... | 06/06/2006 |
| 7032432 | Apparatus and method for measuring parameters of a mixture having liquid droplets suspended in a vapor flowing in a pipe An apparatus 10,70 and method is provided that includes a spatial array of unsteady pressure sensors 15–18 placed at predetermined axial locations x1–xN disposed axially along a pipe 14 for measuring at least one parame... | 04/25/2006 |
| 7003418 | Methods and systems for temperature compensation of physical property sensors Temperature compensation methods for physical property sensors are disclosed herein, based on a simple bridge circuit. An imbalance of the bridge circuit can be driven to a zero value, while a supply voltage thereof is simultaneously driven to a level required to br... | 02/21/2006 |
| 6942619 | Ultrasound radiation device An ultrasound radiation device comprises a piezoelectric substrate, an interdigital arrangement of two comb-shaped electrodes formed on an upper end surface of the piezoelectric substrate, a counter electrode formed on a lower end surface of the piezoelectric substr... | 09/13/2005 |
| 6912918 | Mass flow sensor and methods of determining mass flow of a fluid The mass flow rate sensor includes a waveguide disposed in a flow passage having a bluff body facing in an upstream direction. Waves are pulsed along the waveguide for interaction with the fluid. A receiver is coupled to the waveguide to detect a propagated wave and... | 07/05/2005 |
| 6904811 | Apparatus for measuring the flow velocity and/or flow throughput of fluids A flow meter, such as a gas meter, for measuring the flow velocity and/or the volumetric through-flow of fluids. The flow meter has a body with connecting flanges for connecting the meter to a pipeline for the fluids. The meter has a tubular center piece that, on it... | 06/14/2005 |
