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| Number | Title | Issue Date |
| 8156816 | Pressure sensor A pressure sensor includes a sense element port, a support ring and a plurality of interference fit slits to provide a flexible interference fit between the sense element port and the support ring to form a substantially flush lap joint. The sensor also includes an ... | 04/17/2012 |
| 8001844 | High temperature pressure sensor element, particularly for measuring pressures inside jet engines, method for the production thereof and component for jet engines A high-temperature pressure sensor element for power units includes a substrate, in which an interior space is developed, a deformable membrane, which separates the interior space from the exterior space in order to deform when the exterior pressure changes, and a s... | 08/23/2011 |
| 7748276 | Manufacturing method of pressure sensor and pressure sensor A manufacturing method of a pressure sensor that includes a pressure detector having a bottomed cylindrical member with a bottom including a thin-wall portion and a strain detecting mechanism provided on one side of the bottom for detecting a strain of the bottom an... | 07/06/2010 |
| 7555958 | Physical quantity detector A physical quantity detector includes a pressure-responsive bridge circuit that outputs a detection voltage including a voltage component corresponding to atmospheric pressure and a voltage component corresponding to a change quantity from the atmospheric pressure, ... | 07/07/2009 |
| 7509867 | Bioinformation detection device utilizing air pressure variation A bioinformation detection device, comprising a three-layer structure having a base, an elastic body, and a cover body, wherein a closed space is formed by a load applied to the structure, a strain detection element is sealed in the closed space, and an air pressure... | 03/31/2009 |
| 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 elastomeric sleeve provided on its internal diameter that prevents fl... | 10/14/2008 |
| 7434471 | Pressure measurement transducer with protective device A pressure measurement device with protection from long-term loads and pressure shocks. The novel device includes a diaphragm adapted to deform in response to a pressure applied thereto, and a retractable support adapted to support the diaphragm during periods of no... | 10/14/2008 |
| 7412892 | Method of making pressure transducer and apparatus A method for making a pressure transducer comprising: forming a recess in a diaphragm, the diaphragm having a thinned region that deflects responsively to pressure being applied thereto; depositing a glass frit in the recess; embedding a plurality of strain gages in... | 08/19/2008 |
| 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 member to which the sensor chip is joined, with the diaphragm facing a thr... | 05/13/2008 |
| 7347099 | Pressure transducer with external heater An improved pressure transducer is disclosed. The transducer includes a connector, an enclosure, a sensor portion, and an external heater disposed to heat the sensor portion. In some aspects, the sensor portion includes a sensor constructed from a brittle material a... | 03/25/2008 |
| 7347098 | Apparatus for providing an output proportional to pressure divided by temperature (P/T) A circuit produces an output that is proportional to the molar density of gas in a chamber. The circuit employs an operational amplifier which measures the temperature using a RTD or other element that changes resistance with temperature. The RTD is placed such that... | 03/25/2008 |
| 7343810 | Pressure sensor and manufacturing method therefor A pressure sensor is composed of a pressure housing having a pressure chamber inside and a pressure sensitive element arranged in the pressure chamber, and a joint housing having a fluid passage for leading fluid into the pressure housing, wherein the pressure housi... | 03/18/2008 |
| 7321846 | Two-wire process control loop diagnostics A diagnostic device for coupling to a process control loop includes digital communication circuitry configured to receive a digital communication signal from the process control loop. The digital communication signal is a digitally modulated analog signal on the pro... | 01/22/2008 |
| 7295131 | Diagnostic system for detecting rupture or thinning of diaphragms A diaphragm diagnostic system for use in an industrial field device has a diaphragm and a diagnostic feature. The diaphragm is configured to couple the field device to a process fluid and has a plurality of layers. A first layer of the plurality of layers is exposed... | 11/13/2007 |
| 7290450 | Process diagnostics A diagnostic device for use in a industrial process includes monitoring electronics or diagnostic circuitry configured to diagnose or identify a condition or other occurrence in the industrial process. The system can be implemented in a process device such as a flow... | 11/06/2007 |
| 7290453 | Composite MEMS pressure sensor configuration A pressure sensor assembly comprised of a single and dual layer diaphragm with integrated force sensing flexure, such as a cantilever beam. Strain gages are positioned on the force sensing beam. The pressure forces the diaphragm to deflect. The deflection is constra... | 11/06/2007 |
| 7284444 | Hermetically sealed displacement sensor apparatus A hermetically sealed displacement sensor has strain gauges placed on thin flexible triangular shaped beams of a load beam cell. The strain gauges are enclosed in a hermetically sealed cavity which cavity is sealed by means of a cover plate placed over the load beam... | 10/23/2007 |
| 7278321 | Pressure sensor A pressure sensor for sensing a pressure level of a medium. The pressure sensor includes a rigid substrate having a medium contacting side and a pressure sensitive resistor mounted on the medium contacting side. The resistor exhibits a change in resistance in respon... | 10/09/2007 |
| 7270010 | System and method for pressure measurement A pressure measurement system may provide ready manufacturing, reliable operation, and/or enhanced performance by using a circuit board housing. In particular implementations, a pressure measurement system includes a pressure inlet joint, a pressure detecting compon... | 09/18/2007 |
| 7272531 | Aggregation of asset use indices within a process plant A method of monitoring an entity within a process plant wherein the entity includes a plurality of lower level entities, includes acquiring a plurality of use indices, acquiring a plurality of weighting values, and creating an aggregate use index from a combination ... | 09/18/2007 |
| 7260996 | Pressure measuring apparatus and pressure sensor thereof The present invention relates to a pressure measuring apparatus, characterized in that: the pressure measuring apparatus comprises a pressure sensor having a first resistor for sensing an external stress and a second resistor acting as a reference, wherein the secon... | 08/28/2007 |
| 7254518 | Pressure transmitter with diagnostics In one embodiment, a pressure transmitter is provided which diagnoses the condition of a primary element and/or an impulse line which connects to a pressure sensor. A difference circuit coupled to the pressure sensor has a difference output which represents the sens... | 08/07/2007 |
| 7252008 | Micromechanical piezoresistive pressure sensor device A micromechanical piezoresistive pressure sensor device having a sensor substrate, in which an essentially rectangular diaphragm region is provided; a piezoresistive resistance device having at least one piezoresistive resistor strip, which runs parallel to the long... | 08/07/2007 |
| 7252009 | System and method for pressure measurement A system and method for pressure measurement may include the ability to readily produce a pressure measurement system. In one general aspect, a process for producing a pressure measurement system includes providing an assembly including a stem, a pressure detector, ... | 08/07/2007 |
| 7240558 | Pressure sensor A pressure sensor for sensing a pressure level of a pressurized medium. The pressure sensor includes a housing that has a high pressure side, a low pressure side and an aperture. A substrate is located in the aperture. The substrate has a pair of ends and a center p... | 07/10/2007 |
| 7221988 | Creation and display of indices within a process plant A process control system uses an asset utilization expert to collect data or information pertaining to the assets of a process plant from various sources or functional areas of the plant including, for example, the process control functional areas, the maintenance f... | 05/22/2007 |
| 7219554 | Semiconductor pressure sensor A semiconductor pressure sensor is not influenced by a charged object in a fluid to be measured or an electric field from the outside, so satisfactory sensitivity and accuracy can be ensured. The semiconductor pressure sensor is provided with a diaphragm 4 th... | 05/22/2007 |
| 7206646 | Method and apparatus for performing a function in a plant using process performance monitoring with process equipment monitoring and control A process control system uses a data collection and distribution system and an asset utilization suite to collect data or information pertaining to the assets of a process plant from various sources or functional areas of the plant including, for example, the proces... | 04/17/2007 |
| 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 resistor (5) are provided. The thin-film r... | 03/27/2007 |
| 7188529 | Differential pressure measuring apparatus It is related to the shape of a back surface formed to allow a pre-loading diaphragm to become deformed at a threshold pressure value. A differential pressure measuring apparatus has the pre-loading diaphragm which becomes deformed to prevent sensors from being brok... | 03/13/2007 |
| 7185539 | Flow sensor In a flow sensor (1) including an anticorrosion metallic diaphragm; an insulating film formed on one surface of the metallic diaphragm; and a flow rate measuring sensor formed on the insulating film, the other surface of the metallic diaphragm being in contac... | 03/06/2007 |
| 7181976 | Spring-elastic measuring element comprising a flat connecting element that can be welded The invention relates to a spring-elastic measuring element (1) for thermometers, pressure switches or manometers consisting of an arc-shaped measuring tube (3), a base body (2) and a connecting element (10) for the measuring mechanism. T... | 02/27/2007 |
| 7171851 | Temperature compensated strain measurement The present invention provides methods and apparatus for measuring subterranean strain. The methods and apparatus use fluid expansion principles to compensate for temperature variations and increase the accuracy of the strain measurements. The methods and apparatus ... | 02/06/2007 |
| 7159468 | Fiber optic differential pressure sensor A fiber optic differential pressure sensor. In a described embodiment, a differential pressure sensor system for use in a subterranean well includes a fluid property sensing housing having a flow passage formed therethrough. A differential pressure sensor has an opt... | 01/09/2007 |
| 7152483 | High pressure sensor comprising silicon membrane and solder layer A device for measuring pressure, e.g., for measuring high pressure, including a pressure transducer that is arranged in a housing and includes sensor elements and a sensor diaphragm on a first side, and on a second side opposite the first side is provided with a cut... | 12/26/2006 |
| 7151431 | Resistor element, stress sensor and method for manufacturing them A stress sensor in which the direction and magnitude of a stress being applied to a post (6) bonded to or integrated with the surface of an insulating board (3) can be grasped from variation in the resistance of a plurality of resistor elements (8 | 12/19/2006 |
| 7121145 | Capacitative pressure sensor A pressure sensor (30) for sensing fluid pressure in harsh environments such as the air pressure in a tire by providing a chamber (58) partially defined by a flexible membrane (50). The flexible membrane (50) is at least partially formed ... | 10/17/2006 |
| 7114401 | Apparatus and methods for abrasive fluid flow meter A system and method provides a flow measurement system for steady-state and transient flow. A housing contains a sleeve such that the sleeve is isolated from external mechanical loads. A flow measurement element, such as a venture or nozzle, is located in the sleeve... | 10/03/2006 |
| 7107854 | Media isolated absolute pressure sensor A method and media-isolated absolute pressure sensor apparatus includes a first sensor (101) to measure a pressure difference between an isolated media (P1) and a second media (Pa). A second sensor (103) measures an absolute (relative to vacuum)... | 09/19/2006 |
| 7085610 | Root cause diagnostics An industrial process diagnostic apparatus is provided which can identify a source, or “root cause”, of an aberration in an industrial process. A plurality of process configuration models are provided which each represent a physical (or actual) implementation of... | 08/01/2006 |
