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| Number | Title | Issue Date |
| 7437946 | Apparatus and method for measuring a parameter of a multiphase flow An apparatus for determining a characteristic of an aerated fluid flowing within a pipe is provided and includes at least one first sensing device associated with the pipe, such that the at least one first sensing device senses a low-frequency component of the aerat... | 10/21/2008 |
| 7400985 | Apparatus having an array of clamp on piezoelectric film sensors for measuring parameters of a process flow within a pipe A apparatus 10,110,170 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... | 07/15/2008 |
| 7389687 | System for measuring a parameter of an aerated multi-phase mixture flowing in a pipe A method and apparatus for measuring at least one characteristic of an aerated fluid flowing within a pipe is provided, wherein the method includes generating a measured sound speed, a measured density, a pressure and a gas volume fraction for the aerated fluid. The... | 06/24/2008 |
| 7389187 | Apparatus and method using an array of ultrasonic sensors for determining the velocity of a fluid within a pipe An apparatus and method for measuring the flow velocity of a fluid flowing through a pipe that includes an array of at least two ultrasonic sensor units (with as many as 16 sensor units) disposed at predetermined locations along the pipe. Each sensor unit includes a... | 06/17/2008 |
| 7386204 | Optical filter having a shaped filter function An optical filter, including a pair of Bragg grating units optically coupled to respective ports of a circulator, is provided for filtering a selected wavelength band of light from a DWDM input light. Each grating unit includes a respective tunable optical element, ... | 06/10/2008 |
| 7380439 | 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... | 06/03/2008 |
| 7380438 | Apparatus and method for providing a fluid cut measurement of a multi-liquid mixture compensated for entrained gas An apparatus for determining a fluid cut measurement of a multi-liquid mixture includes a first device configured to sense at least one parameter of the mixture to determine a fluid cut of a liquid in the mixture. A second device is configured to determine a concent... | 06/03/2008 |
| 7379828 | Method and apparatus for determining a quality metric of a measurement of a fluid parameter An apparatus for measuring a parameter of a fluid passing through a pipe includes a spatial array of at least two sensors disposed at different axial locations along the pipe. Each of the sensors provides a signal indicative of unsteady pressure within the pipe at a... | 05/27/2008 |
| 7367240 | 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... | 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 |
| 7363800 | Apparatus and method for measuring compositional parameters of a mixture An apparatus for measuring compositional parameters of solid, liquid, and gas components of a mixture flowing in a pipe is presented. The apparatus combines three different compositional measurements (e.g., the speed of light (microwave), the speed of sound (sonar),... | 04/29/2008 |
| 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 |
| 7343820 | Apparatus and method for fiscal measuring of an aerated fluid A method and apparatus for performing a fiscal measurement of at least one characteristic of an aerated fluid flowing within a pipe is provided, wherein the apparatus includes at least one metering device for determining the mixture density of the fluid, the speed o... | 03/18/2008 |
| 7343818 | Apparatus and method of measuring gas volume fraction of a fluid flowing within a pipe A clamp on 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 a... | 03/18/2008 |
| 7340353 | 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... | 03/04/2008 |
| 7337075 | 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 par... | 02/26/2008 |
| 7330797 | Apparatus and method for measuring settlement of solids in a multiphase flow A method and apparatus for measuring a parameter of a flow passing through a pipe is provided, wherein the apparatus includes at least two spatial array of sensors disposed at different axial locations along the pipe, wherein each of the sensors provide a signal ind... | 02/12/2008 |
| 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 |
| 7328113 | 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... | 02/05/2008 |
| 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 |
| 7322245 | Apparatus and method for measuring a fluid flowing in a pipe using acoustic pressures In industrial sensing applications at least one parameter of at least one fluid in a pipe 12 is measured using a spatial array of acoustic pressure sensors 14,16,18 placed at predetermined axial locations x1, x2, x3 along the pipe ... | 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 |
| 7302861 | Portable flow measurement apparatus having an array of sensors A portable flow measuring apparatus includes an array of pressure sensors used to measure the acoustic and convective pressure variations in the flow to determine a desired parameter. A portable processing instrument processes the signals provided by the sensing arr... | 12/04/2007 |
| 7299705 | Apparatus and method for augmenting 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... | 11/27/2007 |
| 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 |
| 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 |
| 7269316 | Method for restoring photosensitivity in hydrogen or deuterium loaded large diameter optical waveguide The present invention provides a new and unique method for increasing the photosensitivity of a large diameter optical waveguide having a cross-section of at least about 0.3 millimeters. The method features loading the large diameter optical waveguide with a photose... | 09/11/2007 |
| 7261002 | Flow rate measurement for industrial sensing applications using unsteady pressures Flow rate measurement system includes two measurement regions 14,16 located an average axial distance ΔX apart along the pipe 12, the first measurement region 14 having two unsteady pressure sensors 18,20, located a distance X1 | 08/28/2007 |
| 7253897 | Optical spectrum analyzer An optical spectrum analyzer (OSA) 10 sequentially or selectively samples (or filters) a spectral band(s) 11 of light from a broadband optical input signal 12 and measures predetermined optical parameters of the optical signal (e.g., spectral pr... | 08/07/2007 |
| 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 |
| 7249525 | Apparatus for measuring parameters of a fluid in a lined pipe An apparatus for measuring a parameter of a fluid passing through a pipe comprises a spatial array of pressure sensors disposed at different axial locations along the pipe between a sleeve within the pipe and an inside surface of the pipe. Each of the pressure senso... | 07/31/2007 |
| 7245385 | Characterizing unsteady pressures in pipes using optical measurement devices An apparatus for measuring at least one parameter associated with a fluid flowing within a pipe comprises an optical measurement device and a signal processor. The optical measurement device provides output signals indicative of unsteady pressures within the fluid a... | 07/17/2007 |
| 7237440 | Flow measurement apparatus having strain-based sensors and ultrasonic sensors A flow measurement apparatus is provided that combines the functionality of an apparatus that uses strain-based sensors and ultrasonic sensors to measure the speed of sound propagating through a fluid flowing within a pipe, and measure pressures disturbances (e.g. v... | 07/03/2007 |
| 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 |
| 7180601 | Optical system featuring chirped Bragg grating etalon for providing precise reference wavelengths An optical system has a broadband source and a chirped Bragg grating etalon. In operation, the broadband source provides a broadband optical signal. The chirped Bragg grating etalon responds to the broadband optical signal, for providing a chirped Bragg grating etal... | 02/20/2007 |
| 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 |
| 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 |
| 6947640 | Alignment and imaging system for writing Bragg gratings A method is provided for precise and repeatable location of one or more Bragg gratings in a large diameter optical waveguide having a cross-section of at least about 0.3 millimeters, featuring the steps of: defining a reference location on a fixed placement datum ar... | 09/20/2005 |
| 6462329 | Fiber bragg grating reference sensor for precise reference temperature measurement A fiber Bragg grating reference module provides a precise temperature reference for a temperature probe, including a thermistor, located in close proximity thereto, and includes an optical fiber having a fiber Bragg grating therein, a glass element and a ... | 10/08/2002 |
| 6016702 | High sensitivity fiber optic pressure sensor for use in harsh environments A pressure sensor capable of measuring pressure in a harsh environment includes at least one intrinsic fiber optic sensor element formed within a core of an optical fiber. A length of the optical fiber containing the sensor element is attached to a pressu... | 01/25/2000 |
