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7617734 |
Pressure sensor with dual chamber cover
A pressure sensor assembly is provided for fitting within the valve stem of a vehicle tire. The assembly comprises a substrate assembly defining a plurality of holes. A pressure sensor and a...
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7607353 |
Sealing device for sealing a pressure measuring cell housing, pressure measuring cell device and pressure measuring device comprising the same
The invention relates particularly to a sealing device ( 8 ) for sealing a pressure measuring cell housing ( 3 ), wherein the sealing device ( 8 ) comprises a pressure compensation opening ( 23;...
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7587944 |
Pressure sensor with integrated cooler and methods of using
The present invention relates to a method of determining both pressures and temperatures in a high temperature environment. The present invention also relates to a method of determining...
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7581447 |
Temperature compensating pressure sensing arrangement
The invention provides for a temperature compensating pressure sensing arrangement. The arrangement includes a substrate having sealed channels on which is deposited a CMOS layer, with a conductive...
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7577543 |
Plugged impulse line detection
A digital signal representative of a difference in pressure is received from a differential pressure transmitter. A noise signal is obtained by processing the signal through a band pass filter or...
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7574919 |
Integrated sensor including a pressure sensor and a temperature sensor
An integrated sensor includes a pressure sensor integrated with a temperature sensor. When the sensor is attached to an object of attachment at a mounting position at an angle of θ rq degrees...
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7571652 |
Pressure sensor apparatus and pressure sensor housing
A pressure sensor apparatus and a pressure sensor housing are provided that are capable of preventing the occurrence of frozen moisture, swelling of a gel-like coating member and damage of a...
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7552642 |
Pressure vessel testing
A method for determining the maximum allowable working pressure of a microchannel device, particularly a diffusion-bonded, shim-based microchannel device operating at a temperature greater to or...
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7490518 |
System and method of operation of an embedded system for a digital capacitance diaphragm gauge
Systems and methods for digitally controlling sensors. In one embodiment, a digital controller for a capacitance diaphragm gauge is embedded in a digital signal processor (DSP). The controller...
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7478560 |
Sensor apparatus responsive to pressure and temperature within a vessel
A sensor apparatus includes pressure and temperature sensors for measuring the pressure and temperature of high-pressure fluid media within a vessel. The pressure sensor is disposed in a sensor...
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7464599 |
Temperature compensating pressure sensor having active and reference membranes
Provided is a temperature compensating pressure sensor. The sensor includes a silicon substrate having sealed channels on which is deposited a CMOS layer, and a conductive layer and a passivation...
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7464598 |
Method of pressure sensing with a pressure sensor having a sensor membrane and a compensation membrane
The invention provides for a method of sensing pressure with a pressure sensor having a sensor membrane and a compensation membrane. The pressure sensor also includes a power supply, a controller;...
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7434470 |
Combined pressure and temperature sensor
A combined pressure and temperature sensor for recording the pressure and the temperature of a medium. A sensor element of the combined pressure and temperature sensor includes a through-hole to a...
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7415884 |
Pressure sensor with integrated bi-functional heater and methods of using
The present invention relates to a method of determining both pressures and temperatures in a high temperature environment. The present invention also relates to a method of determining...
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7412893 |
Redundant mechanical and electronic remote seal system
A redundant pressure transmitter for redundantly measuring pressure of a process fluid comprises a transmitter housing, transmitter circuitry, a remote seal assembly including a first pressure...
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7392687 |
Method of calibrating zero offset of a pressure sensor
A piezoresistive pressure sensor test sample is first provided, and a zero offset of the piezoresistive pressure sensor test sample is measured. Subsequently, a stress deviation corresponding to...
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7389695 |
Wireless fluid pressure sensor
A battery powered wireless fluid pressure sensor has a sealed chamber which can be vented to the outside atmosphere through a re-sealable reference port to allow a user to set the reference...
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7389686 |
Methods and systems for determining air data parameters
An air data system is described that includes a cone-shaped probe, a plurality of pressure transducers, and a processing device. The cone-shaped probe includes a first pressure port formed in a...
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7377171 |
Feedback circuit for radiation resistant transducer
A velocity transducer or Velomitor® that can output electrical signals relating to vibration, despite the transducer being exposed to low levels of gamma-radiation, is disclosed. A DC feedback...
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7373266 |
Sensor calibration using selectively disconnected temperature
Calibration of a sensor circuit that includes a sensor, a temperature measurement circuit and a signal processing path. The sensor senses a physical parameter to be measured and generates an...
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7334483 |
Thermal compensation of pressure measurements
Methods and systems for thermal compensation of pressure measurements by a pressure gauge. Errors in pressure values are reduced by utilizing a predetermined correlation between the error in...
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7334480 |
Dual membrane sensor for temperature compensated pressure sensing
A pressure sensor that has a sensor membrane for exposure to fluid at a pressure to be sensed, and a compensation membrane sealed from the fluid at the pressure to be sensed. Associated circuitry...
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7331237 |
Technique for improving Pirani gauge temperature compensation over its full pressure range
A method and apparatus are provided for achieving nearly perfect temperature compensation of a heat-loss vacuum gauge over its full pressure range. A voltage is measured across a sensor leg, a...
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7328623 |
Temperature and/or pressure sensor assembly
A sensor assembly includes a housing and a tube. The housing has a first leading edge portion which is capable of being located in a compressor/fan inlet flow path and which includes an interior...
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7313966 |
Method and apparatus for storing vacuum gauge calibration parameters and measurement data on a vacuum gauge structure
A method and apparatus for measuring gas pressure by combining an ionization gauge with at least one other vacuum sensor. Nonvolatile memory coupled to the vacuum gauge contains calibration...
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7278317 |
Pressure measurement
Pressure measurement may be achieved by using a pressure-conveyance media that responds to externally applied pressure to convey pressure to a pressure sensor. With the conveyance of pressure, the...
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RE39863 |
Combined flow, pressure and temperature sensor
The invention relates to a device for measuring pressure, temperature and/or flow velocity. It includes a sensor ( 6 ) with a sensor support body ( 13 ) provided with a diaphragm ( 15 ) covering a...
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7274002 |
Heating element induction of time-varying thermal gradient in elongated beam to cause one or more elongated beam oscillations
One or more heating elements comprise a heating element. One or more elongated beams comprise an elongated beam. The heating element is coupled with the elongated beam and induces a time-varying...
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7260496 |
Pressure detector and method of diagnosing blockage of impulse lines
A pressure detector for detecting a high side pressure from a high pressure side impulse line and a low side pressure from a low pressure side impulse line includes a high side pressure variance...
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7258017 |
Industrial process pressure transmitter with field repairable remote seals
A pressure measurement system includes a pressure transmitter and a remote seal assembly, and a capillary tube that connects a housing of the remote seal with a housing of the pressure transmitter...
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7258016 |
Pressure sensor with electronic datasheet
A pressure sensing system and method includes a pressure sensor configured to include a pressure sensing diaphragm and a pressure port. A memory circuit incorporated can be incorporated into the...
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7249515 |
Capacitive pressure sensor
For minimizing the span error of a pressure sensor having an essentially cylindrical platform and a measuring membrane joined to an end face of the platform, with the pressure measuring cell being...
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7216546 |
Pressure sensor having integrated temperature sensor
A pressure sensor includes a case, terminals, a pressure sensing element, a port, and a temperature sensing element. The terminals are assembled to the case by insert molding and connectable to an...
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7201057 |
High-temperature reduced size manometer
A pressure-sensing device and method for making and using such device having a temperature differential between two portions of the device is disclosed. A solid-state heat pump, such as a...
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7194910 |
Digital output MEMS pressure sensor and method
A method and pressure-sensor system provide a digital-frequency output linearly proportional to a sensed pressure. The system comprises a MEMS pressure-sensing element to provide a pressure-sensing...
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7194375 |
Pressure sensor
A pressure sensor 11 is provided with a connecter housing 30 having a pressure sensing element 20 arranged on an end surface thereof, a sensor housing 40 constructed to have the connecter...
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7165458 |
Vacuum gauge
A thermal conductivity type pressure gauge comprises a gauge head ( 2 ) being rotatably mountable in a vessel whose environmental pressure is to be measured and an elongate electrical filament ( 6...
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7146860 |
Method for temperature compensation of a digital pressure meter
A digital pressure meter is equipped with an operational (OP) amplifier circuit, and a thermistor circuit is connected with the OP amplifier circuit for causing change of an amplification ratio of...
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7124640 |
Thermal mounting plate for heated pressure transducer
A transducer assembly including a sensor housing, a heater shell located in the sensor housing, a heater operatively coupled to the heater shell, a sensor received in the heater shell, and an...
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7124639 |
Ultra high temperature hermetically protected wirebonded piezoresistive transducer
An ultra high temperature hermetically protected transducer includes a sensor chip having an active area upon which is deposited piezoresistive sensing elements. The elements are located on the top...
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7124638 |
Pressure sensor and method for detecting an effective pressure
A pressure sensor for detecting an effective pressure comprises a first pressure detection means for providing a first pressure measurement signal and a second pressure detection means for...
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7111507 |
Method for compensating temperature in a tire pressure monitoring system
The invention discloses a method for compensating temperature in a system for tire pressure monitoring which is especially implemented by detecting a tire pressure and/or by detecting a tire...
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7085628 |
Apparatus for the correction of temperature drift for pressure sensor, pressure control apparatus and pressure-type flow rate control apparatus
A pressure sensor, a pressure control apparatus, and a flow rate control apparatus are provided to automatically correct temperature drift of the pressure sensor and accurately detect pressure...
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7082834 |
Flexible thin film pressure sensor
Low pressure sensing and imperviousness to corrosion and to the effects of harsh environments are achieved in a pressure sensor that employs a flexible membrane supporting piezoresistive elements....
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7062974 |
Pressure transmitter
The invention relates to a pressure transmitter for an overload-proof pressure gauge, comprising a base body, a separating membrane disposed on a pressure-sensitive side of the pressure transmitter...
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7051595 |
Monolithic multi-functional integrated sensor and method for fabricating the same
A monolithic multi-functional integrated sensor and method for making the monolithic multi-functional integrated sensor. The monolithic multi-functional integrated sensor includes: a pressure...
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7043994 |
Variable capacitance measuring device
A variable capacitance measuring device can comprise any one or more features in various different embodiments allow a reliable, compact device to be achieved. A capacitor electrode, a gettering...
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7043993 |
Pressure sensor device having temperature sensor
A pressure sensor device having a temperature sensor includes a pressure sensor, a temperature sensor, a sensor casing for accommodating the pressure sensor and a connector pin for electrically...
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7036381 |
High temperature pressure transmitter assembly
A pressure transmitter assembly for measuring a pressure of a process fluid includes an isolation diaphragm assembly. A pressure sensor is spaced apart from the isolation diaphragm assembly to...
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7028467 |
Exhaust emission control device for internal combustion engine
An engine exhaust emission control device determines a differential pressure across a diesel particulate filter (DPF) to enable regeneration of the DPF at optimal timing. An ECU estimates the...
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