Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 201 - 250 out of 1,326

Document Document Title
WO/1999/026048
The invention relates to a micromechanical differential pressure sensor device for measuring a pressure difference between two interspaced areas or media in which two absolute pressure measuring devices (9a, 9b) are integrated in a monol...  
WO/1999/024140
A differential pressure monitor (50) for measuring the pressure at a plurality of heights in a filter bed (38) is provided. A preferred embodiment of the monitor (50) includes an elongated body (70), a plurality of pressure sensors (56) ...  
WO/1999/017088
The invention relates to a method for filling the measuring chamber (4, 13, 27) of a pressure differential measuring transducer with pressure transmission liquid via a filling duct (27). According to the inventive method, a filling bar (...  
WO/1999/012013
The invention relates to a separating membrane system for a pressure transducer, comprising an inner body (1) with a structured area (3) with annular, wave crest-shaped peaks (4, 4') and wave hollow-shaped troughs (6), a separating membr...  
WO/1998/038484
The invention relates to a pressure differential measuring transducer comprising measuring membranes located next to each other on one side of a membrane disk and a common fluid area allocated thereto. In order to obtain an electrical me...  
WO/1998/015808
The invention concerns a cell (28) for converting differential pressure into an electric signal comprising: two chambers (38, 40) filled with an incompressible fluid each delimited by a membrane (32, 34) capable of being deformed by the ...  
WO/1998/002205
This invention is an improved fluid management system (Fig. 1) for irrigation of a body cavity and in particular for use in arthroscopic surgery having a pressurized fluid circuit (17) for supplying irrigation fluid, and a vacuum fluid c...  
WO/1998/001731
A pressure transducer that includes at least two sensors having substantially similar or substantially indentical error characteristics, wherein each sensor is arranged to be subjected to an applied pressure and the outputs of the sensor...  
WO/1997/048974
A differential pressure sensor is attached to a process via a high and a low pressure impulse line. An absolute pressure sensor is also attached to each impulse line. To determine if an impulse line is blocked, a noise signal is acquired...  
WO/1997/022855
An instrument installation system is provided which uses interchangeable hardware components and improved methods to connect differential pressure transducers to process piping. The system is designed to permit the instrument to be close...  
WO/1997/021984
A system for improving fluid pressure measurement in a control valve (100) includes placing a flow conditioner (12, 52) adajcent to and upstream from averaging channels (42, 82) located at the inlet (106) and outlet (116) of the control ...  
WO/1997/004295
Dynamometric detector device for bearings, with a strain transmitter means fitted integral with a race and supporting a sensor, characterized in that the strain transmitter and sensor support means is comprised of the armature (7) of the...  
WO/1996/041141
A differential pressure transducer includes a pair of interior chambers (12, 14) separated by supported, nominally planar electrically conductive diaphragm (16). A magnetic assembly is positioned on at least one chamber wall opposite an ...  
WO/1996/037764
A selectively pressured housing apparatus comprising a body, a wall member, an aperture, and a mounting seat. The body has a chamber therein extending along a first axis, is open at a first axial end and a second axial end, and has a por...  
WO/1996/027123
First capacitance pressure sensor (70A, B) has a fusion bonded single crystal structure (sapphire with cavity). Second one (70A, B) has an elongated and thick single crystal structure. Third one (70A, B) uses the electric field emanating...  
WO/1996/019371
Device for eliminating sudden pressure changes in an air-conditioned or ventilated vehicle. The vehicle comprises an inlet (3) for external air and an outlet (5) for internal air, the inlet being connected to a suction tube (2) drawing t...  
WO/1996/006338
A pressure transmitter apparatus having a unitary body portion (16), separate diaphragms and flange elements (14) and disposed within the body, a first and second normally vertical pressure passages. The first and second pressure passage...  
WO/1996/001414
A media-isolated differential pressure sensor apparatus and corresponding method combines a first signal (207, 209) provided by a first pressure sensor (101), indicative of a difference between a first pressure and second pressure applie...  
WO/1995/024625
A fool-proof valve battery useful as a connecting module for a differential pressure measurement transducer has first and second inlet connections (1, 2) for connecting to a differential pressure source (+p, -p), first and second outlet ...  
WO/1995/008759
A transmitter (10) provides an output indicative of pressure of process fluid. The transmitter (10) has a first body (14) with a passageway (32) filled with isolation fluid extending from a first port to a pressure sensor (16). A second ...  
WO/1994/021992
The invention relates to a pressure difference measurement converter with an inner housing divided into two parts transversely to its longitudinal axis, between the two housing sections of which is clamped a central diaphragm bearing a p...  
WO/1994/017383
A pressure sensor has a substrate (21) and a layer (25) which defines together with the substrate a pressure sensor cavity (24). The layer has a diaphragm-like area (26) upon which an outer pressure may be applied. In order to create a m...  
WO/1994/005988
A pedestal mount capacitive pressure sensor (10) is supported in a housing (11) and used to sense fluid pressures to provide air pressure data relating to the performance of air vehicles. The capacitive sensor uses a thick base plate (40...  
WO/1993/024818
A two-wire transmitter includes a pressure sensor (5; 160) comprising first (11; R¿9?, R¿10?) and second (13; R¿11?, R¿12?) sensing means each having an impedance value which varies with pressure being measured and with a predetermin...  
WO/1993/022643
A method and apparatus for measuring differences between forces, pressures, and combinations thereof. One or more force or pressure deformable members, preferably metal bellows, are internally connected by rigid linkage which is in turn ...  
WO/1993/021506
A transmitter (8) with a flame arresting header (16) senses a pressure of a process fluid with a diaphragm (44) which is sealed to the header. The diaphragm (44) transfers the pressure of the process fluid acting on an outer surface of t...  
WO/1993/017313
The invention relates to a pressure difference sensor with a semiconductor measuring diaphragm which is clamped between two bearers of insulating material to form an inner chamber; each of the bearers is fitted with a flat electrode on t...  
WO/1993/008479
A two wire transmitter (12) responsive to a pressure differential sensor (30) includes a fixed module (28) and a removable module (26). The fixed module (28) is adapted for connection to an analog removable module (26) having a compensat...  
WO/1992/017757
A pressure sensing transmitter (10) is provided that has high overpressure protection. The transmitter (10) includes a housing (12) having a first cell(14), a second cell (16), a sensing chamber (18), first and second pressure signal rec...  
WO/1992/017756
A metal thin film (58) bonds a semiconductor bonding region (54, 56) of a diaphragm layer (50) to a ceramic bonding region (44) of a high modulus support block (40). The arrangement isolates a pressure sensing diaphragm (60) from undesir...  
WO/1992/015850
In a two wire transmitter (10), a capacitive sensor (5) senses differential pressure and provides a differential pressure signal based on the differential pressure sensed. The differential pressure signal varies with variations in static...  
WO/1992/010731
A pressure transmitter (10) has a pressure transducer (12) in a transmitter housing (14). The transmitter housing (14) includes a groove or a notch (20) defining a flexure closely proximate a housing outer rim (24). The outer rim (24) re...  
WO/1991/015743
An industrial machine such as a civil engineering machine and a construction machine, comprising a hydraulic system in a driving system thereof, wherein conditions of pressure in respective portions of the hydraulic system are detected a...  
WO/1991/005232
A capactive ratioing oscillator circuit utilizing a prior art pressure capsule, but through modification of the stable variable oscillator circuit achieves a digital output which varies with the square root of the capacitance ratio C35 C...  
WO/1991/000415
An apparatus is disclosed for the accurate measurement of pressure changes. That apparatus has a reference accumulator (10) and a differential pressure transducer (50). The reference accumulator (10) stores a pressure representative of t...  
WO/1990/011503
This invention relates to a differential pressure gauge utilized for measuring the difference between fluid pressures at two positions spaced apart from each other in a longitudinal direction of a fluid conduit line in the internal space...  
WO/1990/004701
A solid state pressure sensor (35) utilizes a brittle diaphragm (36) made of a material such as silicon, which is mounted between base plates of glass (37, 38), and which deflects in response to pressure. The base plates (37, 38) of glas...  
WO/1989/006350
The present invention concerns a differential pressure meter for measuring differential pressure between two different points. As taught by the invention, the meter comprises two vertical, substantially transparent tubes (1, 2), said tub...  
WO/1988/007185
An isolator apparatus (12) for coupling pressure from a pressurized fluid carried in a conduit (40) to a pressure sensor (10A) in a pressure transmitter (10) having an isolation diaphragm (24), isolation fluid (54), and a pressure sealin...  
WO/1988/002107
A pressure transmitter (10) is coupled directly to an industry standard flange adapter union (40) having a standard bolt hole spacing. Small diameter isolator diaphragms (30, 31) are positioned on the transmitter case (11) at locations s...  
WO/1988/001049
A deflecting diaphragm differential pressure sensor (10) is formed so all electrical elements (30A-30D) and connections (34B) from external circuitry to the sensor (10) are isolated from the pressure media. The deflecting, pressure sensi...  
WO/1988/000335
A cell for sensing differential pressures has a single brittle material diaphragm (63, 93, 102) mounted on support plates (50, 75, 120, 130) positioned on opposite sides of the diaphragm (63, 93, 102). The diaphragm surfaces (43C, 77C, 1...  
WO/1987/003088
A corrosion proof differential pressure transducer includes a central disk (12) and two thin diaphragms (14, 16) mounted close to but spaced from the disk on both sides thereof, with the diaphragms being intercoupled to move together. Th...  
WO/1986/002447
A pressure sensing cell construction (10) comprises a pair of plates (42, 43) which are joined together around the periphery, to form a first chamber (45). A second chamber (52), preferably identically constructed to the first chamber (4...  
WO/1985/004474
A differential pressure sensor (10) senses a difference in pressure between a first input (low) pressure (12) or "reference pressure" and a second input (high) pressure (14) and provides a differential sensor signal representative of the...  
WO/1985/002676
A transducer (10) for sensing pressure has a first (60) and a second (62) pressure chamber for sensing pressure and a center stop (20) which has two substantially flat faces (52, 54), each face cooperating with an associated sensor diaph...  
WO/1985/002677
A transducer (10) has a first (22) and second (24) sensing diaphragm configured such that a first pressure (P1) is applied to the first diaphragm (22) and a second pressure (P2) is applied to the second diaphragm (24) and wherein both di...  
WO/1984/000532
An automatic pressure sensitive regulation assembly and process for use with a non-mechanical particulate solids flow apparatus (2). The automatic pressure sensitive regulation assembly comprises first and second pressurized fluid distri...  
WO/1983/004308
A pressure transducer for measuring the difference in pressures between two liquids, includes two very closely spaced plates (12 and 14), at least one of which (14) is a diaphragm, and opposed conductive coatings (18 and 20) on these two...  
WO/1983/004286
The method is applied to a turbomachine, particularly to a pump, and to a support for a pressure sensor of a gaseous or liquid fluid, particularly an electronic pressure pick-off. The pressure or differential pressure of the fluid (3) co...  

Matches 201 - 250 out of 1,326