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WO/2014/043357A1 |
A method of testing a MEMS pressure sensor device such as, for example, a MEMS microphone package. The MEMS pressure sensor device includes a pressure sensor positioned within a housing and a pressure input port to direct acoustic pressu...
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WO/2014/025463A1 |
A method (150) of verifying a condition of a single-crystal pressure sensor (100) is provided. The method (150) includes providing a single-crystal pressure sensor (100) that has at least one electrical characteristic that varies with ap...
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WO/2014/000039A1 |
A respiratory apparatus evaluates accuracy of a pressure sensor, such as when only a single pressure sensor is provided. The accuracy of the pressure sensor may be assessed based on pressure measurement obtained from the pressure sensor ...
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WO/2013/191792A1 |
A process variable transmitter (36) for measuring a pressure of a process fluid includes a first inlet (386) configured to couple to a first process pressure (P1) and a second inlet (386) configured to couple to a second process pressure...
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WO/2013/165300A2 |
An indicating device (2) intended to indicate the function of a pressure sensor (4) arranged so as to measure the pressure in a medium. The indicating device (2) is adapted so as to receive a pressure signal (10) from the pressure sensor...
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WO/2013/126343A2 |
A pressure calibration device can include certain features that allow it to be used with a variety of hydraulic and pneumatic systems. A pressure calibration device can be configured to provide pressure or vacuum, and can have a mode sel...
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WO/2013/110255A1 |
The invention relates to a device for calibrating or adjusting a pressure sensor, comprising a first receptacle (90a) for receiving a pressure sensor test piece, a second receptacle (90b) for receiving a reference pressure sensor, a pump...
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WO/2013/108086A1 |
An industrial process field device having a piezoelectric transducer performs self-testing of the condition of the piezoelectric transducer during a self-test mode. A charging current is supplied to the piezoelectric transducer, and volt...
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WO/2013/041383A2 |
The invention describes a device for detecting the impact of an object on a vehicle, said device comprising a hose (2) filled with a filling medium (3) having a first end and a second end opposite the first end. Moreover, the device comp...
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WO/2013/042607A1 |
Provided is a user-friendly pressure gauge-calibrating device that uses a pressure gauge as the reference and is not affected by the order of calibration pressure points or pressure maintenance times. The pressure gauge-calibrating devic...
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WO/2013/017569A1 |
The invention relates to a method for checking the function of a pressure sensor for detecting the pressure in a medium, wherein the pressure sensor comprises a pressure measuring cell having an elastic membrane, on which a first electro...
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WO/2013/004438A1 |
The invention relates to a method for operating a pressure sensor, which has a measurement diaphragm, at least one counter-body and a capacitive transducer with two pressure-dependent capacitances in each case between electrodes at the m...
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WO/2012/159232A1 |
Provided is a multi-range field full-automatic pressure and electric signal calibrating instrument, comprising: control components such as a shell (9), a power switch (94), multiple-interfaces (95), a display (91), a keyboard (92), and a...
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WO/2012/101257A1 |
The microelectromechanical component has a semiconductor substrate (1), which has a cavity (2a) formed in the semiconductor substrate. The cavity is covered by a reversibly deformable membrane (2). A sensor (17) for detecting a deformati...
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WO/2012/101651A1 |
A triaxial geocomposite testing apparatus 100 for simultaneously calibrating multiple pressure transducers 136, 162 are provided. The apparatus 100 includes a base 104 that has an inlet 120, an outlet 122, and a plurality of spaced apart...
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WO/2012/098136A1 |
The invention relates to a pressure measurement transducer (1) having a measurement chamber (5) which is separated by a separation diaphragm (10) from a process medium to be measured and is filled with a pressure transfer liquid for pass...
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WO/2012/076615A2 |
A capacitive pressure sensor is presented and described, comprising a ceramic pressure measuring cell, in which, with the aid of an additional capacitor, the capacitance of which is independent of the membrane pressure, a control pressur...
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WO/2012/061580A2 |
The present invention provides a dual sensor differential pressure transmitter with a single fill fluid volume that intrinsically eliminates process and environmental performance influences, increases signal level while substantially red...
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WO/2012/045968A1 |
The invention relates to a device for testing pneumatic circuits and for measuring the leakage rate of reference lines in an aircraft, said device being connected to a plenum chamber and including: a multi-pressure module (20) including ...
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WO/2012/028609A1 |
The invention relates to a pressure measuring cell for detecting the pressure prevailing in an adjoining medium, comprising an elastic membrane on which a first electromechanical transducer is arranged, which supplies a first pressure-de...
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WO/2012/009062A1 |
A process variable transmitter (36) for measuring a pressure of a process fluid includes a process coupling having a first port (90) configured to couple to a first process pressure and a second port (90) configured to couple to a second...
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WO/2012/002874A1 |
A valve assembly (1) included in a system for measuring differential pressures in a fluid system and where the valve assembly (1) includes a valve body (7) with an inlet (13) and an outlet (14) for connection to the fluid system, ducts (...
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WO/2011/071976A2 |
Methods and apparatuses are provided for calibrating a vacuum component of a phacoemulsification system at different elevations. The design comprises running a vacuum component to be calibrated at an elevation; determining a maximum vacu...
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WO/2011/038753A1 |
A pressure transmitter and a related method for measuring the pressure exerted by a fluid on the diaphragm of the pressure transmitter itself. The pressure transmitter has a pressure sensor assembly which comprises a diaphragm displaceab...
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WO/2011/018706A1 |
A pressure sensor having a substrate and a first, deformable membrane, partially supported by the substrate, which generates a first sensor reading when deformed by pressure. A second membrane is contiguous to the first membrane. When th...
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WO/2011/015302A1 |
The invention relates to a pressure sensor (10) that can both be easily calibrated and have a high measurement accuracy. The pressure sensor (10) comprises an elastically deformable membrane (1) that is fixed at the edge thereof and can ...
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WO/2011/009476A1 |
The invention relates to a calibrating device for a pressure transducer (1, 31), which has a pressure sensor (3, 33) for producing a measurement signal (U), which corresponds to the pressure of a gaseous or liquid medium to be measured, ...
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WO/2011/009475A1 |
The invention relates to a calibrating device for a differential pressure transducer (30) that has a pressure sensor (36) for producing a measurement signal (U), which corresponds to the differential pressure of a gaseous or liquid mediu...
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WO/2010/144113A2 |
This disclosure describes a fiber optic based pressure transducer that detects position of a heated end of a Bourdon tube under pressure. This movement can be calibrated to provide an accurate pressure reading. The temperature change in ...
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WO/2010/124400A1 |
The present invention provides a microscale pressure sensor that exhibits high sensitivity in a small form factor. The sensor is a bridged device in which a photonic crystal waveguide, surrounded by a photonic crystal slab, is suspended ...
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WO/2010/102812A1 |
The invention relates to a method for operating a hydraulic or pneumatic system. The system comprises at least one pressure accumulator. The system is provided with at least one valve unit and a sensor for the at least indirect detection...
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WO/2010/101193A1 |
The need for changing the threshold value used as the reference for diagnosis is reduced. A pressure transmitter detects the pressure of an object to be measured, such as liquid, slurry, or gas with fluctuation (variation) in pressure, v...
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WO/2010/100754A1 |
It is possible to detect a resistance state of a signal line using a simple configuration in an electric system such as a detection system. Provided is a detection system including: a detection unit (112) which detects a specific physica...
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WO/2010/094608A1 |
In order to functionally test a leak detector (20) that comprises a partial pressure sensor (21), a testing device (30) having a variable volume (33) is connected to the leak detector. Said testing device can be a syringe. By changing th...
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WO/2010/064629A1 |
A pressure transmitter detects the pressure of an object to be measured, such as liquid, slurry and gas, which has pressure oscillation, by way of a lead pipe. Equipment for diagnosing the blockage of a lead pipe comprises a section (11...
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WO/2010/059307A1 |
The present invention discloses apparatuses, systems, and methods for controlling liquid impact pressure in liquid impact systems. The liquid impact systems include at least one gas and a liquid, the gas having a density (PG) and a polyt...
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WO/2010/054676A1 |
The invention relates to a pressure transducer for process instrumentation and to a method for measuring pressure using a pressure transducer having a pressure sensor (1) with a diaphragm (2), on one side of which the pressure (P) to be ...
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WO/2010/020405A1 |
The invention relates to a sensor having a measuring element that measures force, said element measuring direct forces or measurement variables which are converted into forces by means of a measurement variable converter in the sensor, w...
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WO/2010/015569A1 |
The invention relates to a pressure measurement converter and to a method for operating a pressure measurement converter comprising a pressure sensor (6) for producing a measurement signal (9) corresponding to the pressure (P) of a gaseo...
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WO/2010/003432A1 |
The invention relates to a method for calibrating a pressure transducer (1) for process instrumentation and to a pressure transducer, wherein the pressure transducer (1) is provided with a sensor element (2) disposed on a membrane (3) fo...
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WO/2009/141200A1 |
The invention relates to a method for testing a pressure sensor of a fuel accumulator device in an internal combustion engine. According to said method, the pressure in the fuel accumulator device is altered and the influence of said alt...
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WO/2009/138310A1 |
The invention relates to a method for the functional testing of a pressure switch (23) of a tank vent device (102) for an internal combustion engine (1) of a motor vehicle (100), enabling the testing of the pressure switch even while the...
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WO/2009/132366A1 |
A system (1) for failure recognition of a pressure sensor (2) for monitoring pressure of an enclosed space (3) and for indicating when a pre-determined pressure range has been left, comprises an evaluation unit (6) for the pressure measu...
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WO/2009/117674A2 |
A testing and analysis system for a pressure-sensitive device (42) that includes a testing stage (10) comprising a platform having an upper surface, a groove situated on the upper surface, an endless support gasket located in the endless...
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WO/2009/098587A1 |
A pressure sensor including a body (2), pressure receiving means (3) associable with a tube connected to a tank of an electric household appliance (5), in which there is collected in use a fluid, the level of which it is intended to be m...
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WO/2009/083328A1 |
The invention relates to a method for calibrating a pressure sensor comprising a movable diaphragm above a hollow space. In order to calibrate the pressure sensor, the diaphragm is deflected using an electrostatic force, and said deflect...
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WO/2009/072390A1 |
Disclosed is a method for calibrating a pressure measuring unit to measure a pressure in an extracorporeal circulation circuit without any contact with the air. Even after the connection between the air chamber of the pressure measuring ...
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WO/2009/067051A1 |
The invention relates to method for calibrating sensors in a system comprising a plurality of sensors, which are arranged so that they can be subjected to the same load, comprising the steps of detecting the level of an operating paramet...
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WO/2009/012605A2 |
The following method sequence is proposed for calibrating a vacuum measuring cell arrangement: a) the measuring cell arrangement (1) is connected to a calibrating device (10), with the measuring connection (5) being connected to a vacuum...
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WO/2009/004196A2 |
The invention relates to a method for calibrating the offset of a signal representative of a pressure (P_brut) in the combustion chamber (2) of a thermal engine, a cylinder pressure sensor (4) being provided in the combustion chamber (2)...
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