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7347089 Gas volume contents within a container, smart volume instrument  
A method for determining the volume of an incompressible gas in a system including incompressible substances in a zero-gravity environment. The method includes inducing a volumetric displacement...
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...
7299706 Flow meter and method of using the same  
The invention relates to a new method and a new apparatus to accurately measure flow rates in injection systems such as gasoline, direct injection gasoline and diesel downstream of the injector...
7295934 Flow meter performance monitoring system  
Apparatus and associated systems, methods and computer program products relate to monitoring the performance of an operating gas meter by automatic and substantially continuous differential...
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...
7211873 Sensor device having thin membrane and method of manufacturing the same  
A sensor device for use in an automobile as an airflow sensor is composed of a silicon substrate in which a cavity is formed and a base plate bonded to the silicon substrate. An upper end of the...
7204158 Flow control apparatus and method with internally isothermal control volume for flow verification  
An internally isothermal control volume of a flow verification system for measuring gas pressure drop relative to time to calculate flow rate has a thermal reservoir provided therein. The thermal...
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...
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...
7162921 Measuring device for measuring the volume flow or the substance properties of a gas, whose direction of flow can reverse  
A device for measuring the volume flow or other substance properties of a gas, whose direction of flow can reverse. The arrangement contains a specially designed Y-piece, which is used for...
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...
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...
7135749 Pressure sensor  
A pressure sensor includes a silicon-on-insulator (SOI) substrate, a glass substrate bonded to the SOI substrate by anode bonding, a silicon island formed on a part of a silicon layer of the SOI...
7121152 Portable flow measurement apparatus having an array of sensors  
A portable flow measuring 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...
7084363 Variable differential adjustor  
A variable differential adjustor for a fluid pressure-actuated switch, with the fluid, in the preferred form of the invention, being air. The restrictor has a restrictor housing with a fluid...
7042230 Multi-parameter sensing system  
Systems and methodologies that provide for multi-parameter sensing via micro fabricated sensing structures operatively connected to oscillators, each micro-fabricated sensing structure in part...
6983662 Bodily flow measuring system  
A system of measuring the flow of a human or animal bodily action or fluid along or through a bodily flow conduit using two or more sensor means located on the body and along or around the path of...
6945123 Gas flow sensor having redundant flow sensing capability  
A sensor for redundantly measuring gas flow has a housing suitable for being interposed in a gas flow conduit. The housing has an orifice through which the gas to be measured flows. A gas flow...
6935338 Fluid resistant airway adapter  
An airway adaptor that includes a tubular body having a first gas flow passage defined therein. A protrusion extends from an interior wall of the tubular body into the gas flow passage. The...
6928884 Method and apparatus for measurement of flow rate  
A bi-directional, clean or grey medium, wide temperature range, low intrusion, low turbulence, mass flow meter extends multiple pressure sensing tubes, each containing multiple pressure sensing...
6898339 Multiple mode pre-loadable fiber optic pressure and temperature sensor  
A multiple mode pre-loadable fiber optic pressure and temperature sensor includes a generally cylindrical structure having at least one compression element, a fiber optic having a Bragg grating in...
6842705 Gas flow rate measuring device and gas flow rate measuring method  
A gas flow measuring device and gas flow measuring method are disclosed wherein specific gas component of measuring object gas or target gas composed of gas different from the specific gas...
6826966 Flow sensor package  
A flow sensor package with a housing, a pressure sensing element, a restriction, and an elastomeric seal. The housing has a base, a cover, an inlet port, an outlet port, and first and second...
6789433 Purge gas sensor  
A flow sensor for an analytical instrument. The flow sensor can be used to detect the flow of a fluid such as purge gas in the instrument. The sensor can measure the fluid flow at an opening of the...
6752020 Device for measuring pressure, sound and vibration and method of analyzing flow on surfaces of structural parts  
In a method and apparatus for measuring pressure, sound and vibration, particularly for the flow analysis on missiles or airplanes, a sensor device which is used to sense pressure or sound waves,...
6711525 Filter monitor  
An apparatus for monitoring filter use in a compressed air system and indicating when filter element renewal is required on a differential pressure cost basis.
6705173 Air flow rate meter  
An air flow rate meter and method for monitoring the flow of air in high-pressure compressed air system includes a low pressure gauge contained within a sealed, high pressure vessel that is...
6691584 Flow rate measurement using unsteady pressures  
According to one embodiment of the present invention, the apparatus comprises a first filter for measuring a pressure field at a first axial location along the pipe and providing a first pressure...
6687643 In-situ sensor system and method for data acquisition in liquids  
An in-situ sensor system and method which measures the density of a liquid accurately with pressure sensors by measuring pressure in the liquid at two separate positions defined by a fixed...
6666081 Sensor probe  
An elongate probe suitable for measuring one or more properties of a stream of fluid, the probe having an external planar sensing surface, which in use is exposed to the stream of fluid, at a...
6660528 Method for monitoring contaminating particles in a chamber  
A method for determining the number of contaminating particles in a process chamber is described. While the method is particularly suited for detecting particles in a metal etch chamber, the...
6658946 Method of detecting fluid flow through a conduit  
A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe...
6622573 Process flow device with improved pressure measurement feature  
A flow device including a differential flow plate insertable into a flow path between pipe sections including a flow conduit supporting a flow interrupter and differential pressure taps. The flow...
6568282 Method and apparatus for evaluating a membrane  
A method and apparatus for evaluating a porous membrane. The method includes supplying a fluid to a first side of a wetted membrane at a pressure that is greater than the pressure on a second side...
6546805 Process fluid transmitter with an environmentally sealed service block  
An environmentally sealed service block is mounted inside a field wiring compartment of a process fluid transmitter. The service block has field wiring terminals, sealed jumper assemblies and...
6536291 Optical flow rate measurement using unsteady pressures  
A fiber optic strain gauge based flow rate measurement system includes two measurement regions located an average axial distance ΔX apart along the pipe, the first measurement region having two...
6536271 Pump with integral flow monitoring  
A centrifugal pump for transporting fluid with a housing, an impeller and a plurality of pressure sensors. Disposed within the housing is a volute section defined by a circumferential path through...
6308581 Differential pressure flow sensor  
The fluid flow meter of the present invention includes a ramp inclined to the surface of a vessel so as to form a recess in the surface. A dynamic port surface extends from the lower end of the...
6279405 Apparatus and method for a pressure monitoring device  
A differential pressure monitoring device utilizing two crystalline frequency sensors exposed to different pressures for generating two signals which are combined by a frequency mixer. Two offset...
6244115 Flow meter for monitoring liquid flow at low or intermittent rates  
A flow meter for monitoring liquid flow at low or intermittent rates, such as waste water gravity flow from a reverse osmosis system. Water flow from the system enters a meter chamber vented to...
6151557 Friction flowmeter with improved software  
A method in a pressure transmitter and a pressure transmitter for determining a mass flow rate of a fluid in a conduit measure a differential pressure between two points in the fluid, where the...
6038919 Measurement of quantity of incompressible substance in a closed container  
In a process and apparatus for delivering a processing substance from a storage vessel to a processing station, the storage vessel enclosing a processing substance storage space and being coupled...
6021677 Pipeline system for the controlled distribution of a flowing medium and method for operating such a pipeline system  
A pipeline system (10) for the controlled distribution of a flowing medium comprises a main line (11) which branches at a branching point (12) into a plurality of branch lines (13,14,15), in each...
6016710 Method and apparatus for measuring the quantity of outdoor air processed by an air preconditioning module  
A method and system for determining the airflow through an air preconditioning module having a sensible and/or latent energy transfer matrix having a pre-established relationship between airflow...
6003386 Disposable mass flow transducer  
A single, disposable differential transducer having a molded plastic body in which there is a pair of chambers separated by a strain gage electronic chip that flexes in accordance with the...
5908990 Apparatus for measuring the velocity of a fluid flowing in a conduit  
An apparatus for measuring the velocity of a fluid flowing in a conduit 13 comprises a differential pressure generator including first and second bluff bodies 6a, 6b which are positioned in the...
5905208 System and method measuring fluid flow in a conduit  
A system for measuring fluid mass flow in a conduit in which there exists a pressure differential in the fluid between at least two spaced-apart locations in the conduit. The system includes a...
5895860 Heat exchanging medium pressure measuring apparatus  
A cylindrical member of a sensor mounting member is partitioned in its middle by a partitioning wall into a high pressure side and a low pressure side, with pressure sensors provided at the two...
5837903 Device for measuring exhaust flowrate using laminar flow element  
An apparatus for determining the exhaust flowrate from an internal combustion engine (112) includes a laminar flowmeter (116). The flowmeter includes a capillary section (18) of ceramic material...
5834659 Device and method for measuring fluid flow in a conduit having a gradual bend  
A system for measuring fluid flow in a conduit having a gradual bend or arc, and a straight section. The system includes pressure transducers, one or more disposed in the conduit on the outside of...
Matches 1 - 50 out of 113 1 2 3 >