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7628078 |
Combustion pressure sensor
The pressure sensor includes a first tubular member including at one end portion thereof a sensing section outputting an electrical signal indicative of a pressure applied thereto, and an opening...
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7546772 |
Piezoresistive pressure sensor
A pressure sensor includes a housing portion with a fluid inlet and a polymer element within the housing portion. The polymer element may be coated with piezoresistive material to form a first...
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7516669 |
Capacitance sensing circuit for a pressure sensor
The invention provides for a capacitance sensing circuit for a pressure sensor. The pressure sensor includes a sensor membrane and a compensation membrane. The circuit includes a controller...
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7509868 |
Liquid detecting device, liquid container, and liquid refilling method
A liquid container includes; a liquid containing portion for containing liquid therein; a unit case, including a liquid inlet communicating with the liquid containing portion, a liquid outlet for...
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7493819 |
Micromechanical pressure sensor system
A micromechanical pressure sensor includes a substrate having a front side and a back side, the front side facing a medium and the back side being situated on the opposite side of the substrate. A...
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7472600 |
Pressure sensor
The invention relates to a pressure sensor ( 1 ), comprising a housing ( 2 ), a housing element ( 3 ) which may be exposed to a pressure chamber ( 10 ), mounted on the housing ( 2 ) by means of a...
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7434473 |
Flow through pressure transducer
A flow through pressure transducer for use in harsh environments like oil well cement slurry mixing process. A thin cylindrical sensor sleeve is protected from fluid wear and corrosion by a molded...
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7412896 |
Filter change indicator
A fluid system pressure indicator is adapted for use in fluid systems having a filter element. The fluid system force indicator includes a housing partitioned to be exposed to the fluid system to...
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7409866 |
Signal transmission system
A single wire interface for a transducer transmits the transducer output as a frequency modulated signal over one single wire during one interval. During a second interval a reference signal is...
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7401522 |
Pressure sensor using compressible sensor body
A pressure sensor including a deformable sensor body formed of a compressible material. A deformation sensor is embedded in the deformable sensor body and has an electrical property which changes...
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7370536 |
Pressure sensor device and pressure sensor cell thereof
A pressure sensor device includes a pressure sensor cell that includes a sensor chip having a diaphragm with piezo-resistors, an amplifying circuit, and various adjusting circuits, and a base...
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7334484 |
Line pressure measurement using differential pressure sensor
A pressure sensor assembly for sensing a pressure of a process fluid includes a sensor body having a cavity formed therein to couple to a process fluid pressure. A deflectable diaphragm in the...
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7325460 |
Force sensor method and construction
A method of making a force sensor, the force sensor being particularly sensitive the axial component of a force applied along a predetermined axis, of the type including a force-receiving membrane...
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7316164 |
Pressure detection device and manufacturing method of the same
A pressure detection device includes a sensing part that is provided at one end portion of the housing to output an electrical signal responsive to an applied pressure, a circuit part that is...
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7298280 |
Lighted fluid flow indication apparatus
A fluid flow indication apparatus is provided for monitoring and giving an indication of fluid flow.
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7278318 |
Differential pressure sensor comprising a symmetric error in the separating bodies
A pressure-difference sensor, which is asymmetrical by design, includes a measuring apparatus having a first half-chamber with a first volume V 1 , which is sealed by a first separating membrane...
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7263895 |
Strain detector and method of manufacturing the same
A fluid pressure sensor ( 1 ) for measuring the pressure of a fluid comprises a diaphragm portion ( 12 ) which is a strain generating body, a silicon oxide film ( 21 ) as an insulating film, and a...
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7194923 |
Strain detector and pressure sensor
A thin-film resistor ( 5 ) provided on a strain-generating part ( 2 ) via an insulating film ( 4 ) and an electrode thin-film ( 6 ) including an electrode pad ( 10 ) arranged in the thin-film...
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7152482 |
Piezoelectric sensor and input device including same
A piezoelectric sensor arranged so as to includes: a transparent piezoelectric element having a piezoelectric property; and a pair of transparent conductor film layers opposed to each other with...
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7131335 |
Pressure sensor with barrier providing impending sensor failure indication
A pressure transmitter for transfer of a pressure prevailing in a first medium onto a second medium, including a pressure chamber 4 in a platform 1 , which chamber is separated from the first...
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7040174 |
Pressure cell device for measuring hydraulic pressures
The pressure cell device according to the invention serves for measuring hydraulic pressures in hydraulic mining devices in an inherently secure service region. It is provided with a connection...
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7021148 |
Apparatus and method for sealing pressure sensor membranes
The present invention lessens the amount of air entering between mating membranes of a pressure sensor. The pressure sensor of the present invention includes a transducer portion and separate...
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6931188 |
Side-hole cane waveguide sensor
A side-hole optical cane for measuring pressure and/or temperature is disclosed. The side-hole cane has a light guiding core containing a sensor and a cladding containing symmetrical side-holes...
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6925885 |
Pressure sensor
A pressure sensor includes a sensor element, and a resin package member that holds the sensor element. The sensor element is constructed by a semiconductor, and is capable of externally outputting...
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6923069 |
Top side reference cavity for absolute pressure sensor
A pressure sensor includes a silicon diaphragm having bottom and topside surfaces. The bottom surface has been formed using methods known to those skilled in the art. A first layer is formed and...
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6892582 |
Semiconductor pressure sensor and pressure sensing device
The object of the present invention is to propose an etch channel sealing structure characterized by excellent impermeability to moisture and resistance to temporal change of the diaphragm in the...
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6883380 |
Pressure sensor capsule
A pressure sensing capsule includes a pressure sensor inside a capsule wall. The capsule wall includes a feedthrough opening. The pressure sensor is mounted to a stress isolation member with a...
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6880405 |
Electrical/visual differential pressure indicator with solid state sensor
A differential pressure indicator has a housing with at least two ports in the housing. One port receives a first pressure, and the second port receives a second pressure. A pressure resistive...
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6865799 |
Method of manufacturing strain-detecting devices
A method of manufacturing strain-detecting devices is provided. First, plural cylindrical substrates, each of which has one end closed by a diaphragm, are fixedly placed at predetermined positions...
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6845674 |
Transfer fluid for pressure measurement technology and its application
Transfer fluid, in particular for electrical pressure transducers and pressure transmitters, that transfers deflections of a separating element between a substance to be measured and the transfer...
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6832523 |
Micromechanical component and manufacturing method
A micromechanical component having a substrate and a diaphragm positioned on the substrate. Underneath the diaphragm a region made of porous material is provided, which mechanically supports the...
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6804993 |
Sensor arrangements and methods of determining a characteristic of a sample fluid using such sensor arrangements
An arrangement and method for determining one or more characteristics of a sample fluid, and a method to determine the one or more characteristic of the sample fluid, are provided. In particular, a...
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6732588 |
Pressure transducer
The present invention relates to compact solid state silicon-based condenser microphone systems suitable for batch production. The combination of the different elements forming the microphone...
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6698294 |
Pressure cell with temperature sensors and pressure measuring method
A pressure cell contains a base body ( 1 ), a membrane ( 2 ) that is arranged on the base body ( 1 ) and can be deformed by a pressure to be measured, as well as a first and a second temperature...
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6684710 |
Device for measuring pressure comprising a membrane moulded into a cassette
The invention proposes a device for measuring the pressure of blood in a pipe ( 44 ) of an extracorporeal blood circuit ( 42 ) includes a pressure measurement section ( 46 ) having a substantially...
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6668658 |
Pressure sensor module
A pressure sensor module for measuring a differential pressure has a sensor chip for measuring a differential pressures and a module housing with at least two lead lines that are disconnected from...
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6649046 |
Device for measuring negative pressures in an extracorporeal blood circuit
A device for measuring the pressure of blood in a pipe ( 44 ) of an extracoporeal blood cicuit, includes a pressure measurement section ( 46 ) having a compartment ( 58 ) which is delimited...
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6626045 |
Pressure measurement device
A pressure measurement device comprising a housing enclosing an elastic pressure measurement element and a magnet attached to the measurement element. First and second Hall sensors operatively...
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6595051 |
Fluid level sensing and control system
An improved pressure activated control apparatus is provided for sensing fluid pressure and triggering one or more switches in response to the fluid pressure, as desired. The apparatus is designed...
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6591684 |
Pressure sensor intergrated into an electro-hydraulic control unit
A pressure sensor is mounted upon a hydraulic valve body. The sensor has a base which extends into a bore formed in the valve body. The valve body bore is in communication with a pressurized...
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6557417 |
Method and device for void fraction measurement and adverse output signal mitigation on pressure-base instruments
A method and device for void fraction measurement in a gas/liquid two-phase stratified flow system in disclosed. A couple of pressure-signal tubes are mounted to the through into the top and bottom...
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6543292 |
Piezoresistive air pressure sensor
A method of manufacturing an air pressure sensor is disclosed. A plurality of sensor circuitry modules are formed on a first side of a silicon wafer. A plurality of cavities on a second side of the...
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6539807 |
Differential pressure transducers
The invention pertains to differential pressure transducers for gas turbine motors, for measuring variable pressure differences within a medium or between different media. The differential pressure...
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6507187 |
Ultra-sensitive magnetoresistive displacement sensing device
An ultrasensitive displacement sensing device for use in accelerometers, pressure gauges, temperature transducers, and the like, comprises a sputter deposited, multilayer, magnetoresistive field...
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6499354 |
Methods for prevention, reduction, and elimination of outgassing and trapped gases in micromachined devices
Unwanted gasses created during bonding within micromachined vacuum cavities are reduced in a manner conducive to mass manufacturing. Two broad approaches may be applied separately or in combination...
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6474170 |
Pressure sensor
A pipe having a through-hole of smaller diameter than a pressure port is disposed in the pressure port. Therefore, a volume of the pressure port can be reduced by the thickness of the pipe, thereby...
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6218687 |
Smart microsensor arrays with silicon-on-insulator readouts for damage control
A microsensor for identifying a change in a characteristic of an environment having temperatures of up to approximately five hundred degrees Centigrade includes a substantially flat insulator layer...
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6214634 |
Sensor device and method of forming a sensor device
A sensor device (20) comprises a sensor package (22) having a cavity (24) formed therein, a sensor die (26) mounted on a bottom surface (28) of the cavity (24) and a protective coating (30) formed...
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6105434 |
Acceleration-compensated pressure transducer
The invention is an acceleration-compensated pressure transducer having only one signal crystal array joined by two masses and connecting elements to an inner part having a flange. The installation...
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6066882 |
Semiconductor pressure detecting device
A semiconductor pressure detecting device which effectively reduces stress that occurs on a base member due to welding between cap and the base member or any external load. The semiconductor...
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