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Patent Searching and Data


Matches 201 - 250 out of 3,718

Document Document Title
WO/2004/094976A1
A differential pressure sensor for sensing changes in pressure at a desired location, which sensor includes a sensing portion and a reference portion to produce an output indicative of the difference therebetween, both the sensing portio...  
WO/2004/090494A2
The invention relates to a relative pressure transducer which is protected against the penetration of moisture, comprising a housing (7), an insert (17) arranged inside the housing (7), a gap (23) provided between the housing (7) and the...  
WO/2004/074802A1
A super-precise micro-differential pressure measuring device capable of continuously measuring a micro-differential pressure with high accuracy by transmitting micro-differential pressure to an electronic weighing /pressure transducing d...  
WO/2004/068096A1
A semiconductor pressure sensor for measuring a pressure from the pressure difference between a space formed on the surface side of a diaphragm of silicon single crystal and a space formed between the back surface of the diaphragm and a ...  
WO/2004/057291A1
The invention relates to a long-term stable, high-precision differential pressure sensor, comprising a pressure-sensitive, electrically conductive membrane (1) which is arranged between a first and a second base body (3, 5). During opera...  
WO2004013579A3
A differential static pressure measuring or activating device measuring fluid flow through a duct including two pitot tubes each including a proximal end connected to a valve, a distal end portion located in the duct extending generally ...  
WO/2004/013594A1
Disclosed is an asymmetrically designed differential pressure sensor comprising a measuring unit that is provided with a first half-chamber which has a first volume V1 and is closed by a first separating membrane having a first stiffness...  
WO/2004/013579A2
A differential static pressure measuring or activating device measuring fluid flow through a duct including two pitot tubes each including a proximal end connected to a valve, a distal end portion located in the duct extending generally ...  
WO/2003/106956A1
A capacitive pressure transmitter (300) is provided. In one aspect, the transmitter (300) includes a capacitive pressure sensor (56) coupled directly to the measured media without any intervening fluid isolation. A filter is preferably u...  
WO2003058186A3
The invention relates to a relative pressure sensor for measuring the pressure difference between a measuring pressure and the atmospheric pressure in the surrounding area of the pressure sensor. Said sensor comprises a base body (10) an...  
WO/2003/100371A1
The invention relates to a pressure measuring device which comprises a housing (9) wherein a carrier (3) with a sensor element (31) and an electric connecting element (34) is arranged . The housing (9) comprises a first chamber (4) which...  
WO/2003/058186A2
The invention relates to a relative pressure sensor for measuring the pressure difference between a measuring pressure and the atmospheric pressure in the surrounding area of the pressure sensor. Said sensor comprises a base body (10) an...  
WO/2003/046499A1
The inventive pressure sensor has an internal hydraulic system for transmitting pressure and is provided with a closure enabling an exact filling volume for the hydraulic system. The pressure sensor comprises a base body, at least one se...  
WO/2003/038388A1
An improved rheometer plate (6, 7) includes a smooth sensing surface (12) with monolithically integrated miniature pressure sensors which do not interfere with the smooth surface (12). Pressure sensing diaphragms formed by the smooth sur...  
WO/2003/036250A1
The invention relates to a pressure mediator comprising a base body (1) having a membrane bed (11), wherein said base body (1) has a first material with a first thermal expansion coefficient, in addition to a separating membrane (2) havi...  
WO/2003/034018A1
A sensor capsule (20, 98, 120, 220) suitable for use in an industrial process fluid transmitter. The sensor capsule (20, 98, 120, 220) includes a block (24, 224) that has a sensor mounting hole (30, 130, 230). The block (24, 224) include...  
WO/2003/027625A1
A light emitted from a light source is input to a sensor that generates an optical path difference in an input light according to the physical quantity of an object of measuring, an optical path difference−generated light output in res...  
WO/2003/012386A1
A differential pressure sensor chip (4) comprises a diaphragm for measuring pressure difference and converts a pressure received by this diaphragm into an electrical signal. An electrostatic pressure sensor chip (5) comprises a diaphragm...  
WO2002079742A9
The present invention provides a differential-pressure transducer (106) having two sensors cross-coupled and independently excited. A first Wheatstone Bridge pressure sensor (102) has a first sensitivity and is excited by a first voltage...  
WO/2002/097387A1
A high sensitivity pressure sensor with long term stability including a housing with first and second chambers, a membrane (20) separating the first and second chambers, a first electrode located in the first chamber (16) and spaced from...  
WO/2002/095728A1
A portable voice/letter processing apparatus includes an input unit for receiving input data; a storing unit for storing compressed data; a control unit for generating a control signal so that the compressed data is retrieved based on th...  
WO/2002/090916A1
A chamber inside a housing communicates with the surrounding area of the housing via a gas exchange path, whereby a filter element comprising a nanoporous, hydrophobic or hydrophobicized material is located in the gas exchange path. The ...  
WO/2002/088655A1
The invention relates to a differential pressure sensor in which the measured value is corrected by using the nominal pressure NP. This, in turn, reduces the influences upon the measured value caused by deformations of the body of the di...  
WO2001059419A9
A pressure sensor (10) configured to sense an applied pressure, comprising a diaphragm support structure (12), a diaphragm (16A, B) coupled to the diaphragm support structure and configured to deflect in response to applied pressure, a m...  
WO/2002/079742A1
The present invention provides a differential-pressure transducer (106) having two sensors cross-coupled and independently excited. A first Wheatstone Bridge pressure sensor (102) has a first sensitivity and is excited by a first voltage...  
WO2000034744A9
A process variable transmitter (10) providing a transmitter output representing a process variable (14) sensed by a sensor (18). The transmitter (10) has a filter with a bandwidth which is automatically adjusted based on noise detected i...  
WO/2002/065083A1
A method of testing a product for leaks includes providing a pressure system (14, 240, 340, 440) for applying to the product a reference pressure that is less than 50.6 KPa. The method also includes developing a gas flow through a leak d...  
WO2001046665A9
A multivariate semiconductor pressure sensor includes differential pressure sensing elements formed by a polysilicon membrane (14) spanning a sensor cavity (38) formed in a substrate (12). The sensor cavity (38) is in communication with ...  
WO/2002/055978A1
A differential pressure sensor, for determining the pressure differential between two metering points, comprises a pressure vessel (4), filled with a transmitting fluid, a measuring cell, arranged in the pressure vessel (4), surrounded b...  
WO2001090704A3
A magnetic flow meter (20, 120, 180, 250) has a diagnostic circuit (122, 182) that indicates leakage from flowtube electrodes (30, 32, 70, 72, 90, 138, 140). The diagnostic circuit couples to the electrodes and to ground. The diagnostic ...  
WO2001090701A3
A magnetic flowmeter (100, 300, 400, 420) with an improved liquid conduction indication has a flowtube assembly (104; 303) with a passage (102; 302) for liquid flow and has an electromagnet (108, 310, 312) mounted outside the passage (10...  
WO2001090702A3
A magnetic flow transmitter (20) provides a coil driver output (46) at a selected fundamental to a coil (48) on a flow tube (22, 42) carrying a flow of a liquid (21). An amplifier (60) amplifies an electrode signal from the flow tube (42...  
WO/2002/033372A1
The invention relates to a pressure measuring cell comprising a base body (1, 23, 25), a membrane (5, 27) that is connected to the base body (1, 23, 25), thus forming a measuring chamber (3, 29, 31). During operation, the membrane is sub...  
WO/2002/006785A1
The invention relates to a differential pressure sensor having a low hysteresis volume. Said sensor comprises a sensor element (1), two pressure measuring chambers (21, 31) which lie adjacent to the sensor element, two pressure receiving...  
WO/2001/090701A2
A magnetic flowmeter (100, 300, 400, 420) with an improved liquid conduction indication has a flowtube assembly (104; 303) with a passage (102; 302) for liquid flow and has an electromagnet (108, 310, 312) mounted outside the passage (10...  
WO/2001/090702A2
A magnetic flow transmitter (20) provides a coil driver output (46) at a selected fundamental to a coil (48) on a flow tube (22, 42) carrying a flow of a liquid (21). An amplifier (60) amplifies an electrode signal from the flow tube (42...  
WO/2001/090704A2
A magnetic flow meter (20, 120, 180, 250) has a diagnostic circuit (122, 182) that indicates leakage from flowtube electrodes (30, 32, 70, 72, 90, 138, 140). The diagnostic circuit couples to the electrodes and to ground. The diagnostic ...  
WO2001046665A8
A multivariate semiconductor pressure sensor includes differential pressure sensing elements formed by a polysilicon membrane (14) spanning a sensor cavity (38) formed in a substrate (12). The sensor cavity (38) is in communication with ...  
WO/2001/069194A1
The invention relates to a differential pressure measuring cell comprising a measuring membrane (7) which can be impinged on both sides by a fluid. Said fluid comes into contact with each side of the measuring membrane (7) via a respecti...  
WO/2001/059418A1
A pressure sensor (10) is provided for measuring a pressure difference between two fluids which does not require isolation fluid. The pressure sensor includes a diaphragm support member (12) having an outer periphery and diaphragms coupl...  
WO/2001/059419A1
A pressure sensor (10) configured to sense an applied pressure, comprising a diaphragm support structure (12), a diaphragm (16A, B) coupled to the diaphragm support structure and configured to deflect in response to applied pressure, a m...  
WO/2001/050105A1
A pressure sensor capsule with a beam shaped sensor body, made of direct bonded layers (96, 98) of single crystal sapphire, surrounding a hollow central channel (102). A first beam end (104) receives pressure and a second beam end (106) ...  
WO/2001/046665A1
A multivariate semiconductor pressure sensor includes differential pressure sensing elements formed by a polysilicon membrane (14) spanning a sensor cavity (38) formed in a substrate (12). The sensor cavity (38) is in communication with ...  
WO/2001/014841A1
The springs (19 and 25) for biasing the piston (7) of a load transducer (3) act on the piston (7) via a retaining member (21), an adjuster (27) and rod (17). This arrangement reduces the tendency for the piston (7) to deviate from the lo...  
WO/2001/007883A1
The pressure transducer includes a body (240), a diaphragm (112), an insulator (130) with a conductor, a wave washer (170), and a compliant ring (274). The ring (274) has a ratio of thickness to cross sectional width greater than one for...  
WO/2001/001214A1
Apparatus for performing diagnostics through a regulator is disclosed. The pressure regulator is disposed in a fluid flow passage and has a throttling element (32) moveable in the flow passage. A stem (30) is attached to the throttling e...  
WO/2001/001215A1
Apparatus for determining fluid flow through a pressure regulator is disclosed. The pressure regulator is disposed in a fluid flow passage and has a throttling element (32) moveable in the flow passage. A stem (30) is attached to the thr...  
WO/2000/070321A1
A device and method provide for improved error compensation in the measurement of process pressure. The device and method are able to compensate for diaphragm deformation (offset) and varying dielectric constants present in a process fie...  
WO/2000/043118A1
A process for detecting, and monitoring, changes in the properties of a fluidized bed of particulate solids, especially a fluidized bed of particulate catalytic solids at elevated temperature wherein a low molecular weight hydrocarbon is...  
WO/2000/036387A1
The invention relates to a method of producing a micro-electromechanical element. According to said method, a first intermediate layer (4; 14) which is applied to a first main surface of a first semiconductor wafer (2; 26) is structured ...  

Matches 201 - 250 out of 3,718