Kulite has over 400 Patents to date!

Recent Patent Approvals

Patent Title: Differential transducder with bellows coupling
Patent No.: 11,906,377
Date of Patent: February 20, 2024
Abstract:
 

A differential pressure transducer assembly having an inter- nal bellows coupling configured to improve reliability and ease assembly. The differential pressure transducer assembly includes a header, a sensing element mounted on the header, a first pressure port having a first pressure media channel in communication with a first side of the sensing element, a second pressure port having a second pressure media chan- nel in communication with a second side of the sensing element, and a bellows coupling disposed between the header and the second pressure port. The bellows coupling may be configured to flex during assembly to compensate for tolerance mismatches. The bellows coupling may further reduce or prevent external stress from being applied to one or more of the header and the sensing element.


Patent Title: Welded differential pressure transducer assembly

Patent No.: 11,867,577
Date of Patent: January 9, 2024
Abstract:
 

A differential pressure transducer assembly having internal sub-components welded together to improve reliability and ease assembly. A method is provided that includes welding a front adapter to a frontside of a header and welding a back adapter to a backside of the header to create a first sub-assembly. The method includes welding the first sub-assem-bly to a front attachment port to create a second sub-assembly. The method further includes welding a cap to a backside of the back adapter.


Patent Title: Clog resistant low pass filter for a pressure transducer

Patent No.: 11,852,551
Date of Patent: December 26, 2023
Abstract:
 

A reconfigurable pressure transducer assembly having an input tube filter assembly is provided. Multiple small inlet apertures of the transducer housing or input tube filter assembly may be utilized to filter particulate matter from the measurement media/fluid. The resonant frequency and dampening characteristics of the pressure transducer assem-bly may be configured by the input tube filter assembly such that temporary clogging of a portion of the small inlet apertures does not appreciably affect the resonant frequency and dampening characteristics. The input tube filter assem-bly includes one or more inserts disposed in an input tube channel, the one or more inserts including one or more apertures of selectable dimensions and extending there-through from a first end to a second end. The one or more inserts define at least a filter aperture, and the input tube filter assembly is tunable by selection of the selectable dimen-sions of the one or more inserts.


Patent Title: Transducer assembly with header with improved configuration including side pins

Patent No.: 11,725,997
Date of Patent: August 15, 2023
Abstract:
 

The invention includes differential pressure transducer assembly systems and methods in which headers are con-figured with header pins that extend perpendicular with respect to an axis of the assembly and through header sidewalls, enabling a compact configuration, ease of assem-bly, enhanced reliability and/or redundancy. Channels and ports defined in a housing portion of the assembly are configured to enable the use of substantially straight tubing sections for routing main and/or reference pressures to one or more differential sensing elements mounted on the head-ers. Two or more headers with associated sensing elements can be stacked to provide redundant differential pressure sensing.


Patent Title: Pressure transducer assembly with selectable damping inserts

Patent No.: 11,698,318
Date of Patent: July 11, 2023
Abstract:
 

A reconfigurable pressure transducer assembly having an input tube filter assembly is provided. The resonant fre-quency and dampening characteristics associate with the pressure transducer assembly may be configured by the input tube filter assembly. The input tube filter assembly includes one or more inserts disposed in an input tube channel, the one or more inserts including one or more bores of selectable dimensions and extending therethrough from a first end to a second end. The one or more inserts define an effective input tube bore, and the input tube filter assembly is tunable by selection of the selectable dimensions of the one or more inserts.


Patent Title: Field serviceable, small form-factor pressure scanner

Patent No.: 11,692,897
Date of Patent: July 4, 2023
Abstract:
 

The disclosed technology relates to a field serviceable pressure scanner suitable for high-pressure sensing applica-tions and replacement of large pressure transmitter panels. The pressure scanner includes a housing having a mounting plate comprising a plurality of through-hole bores extending from a front to back side for mating with corresponding transducer ports of the pressure sensors, and a plurality of input ports disposed on the front side of the mounting plate and in communication with the corresponding plurality of through-hole bores. The pressure scanner assembly includes two or more field-replaceable (swappable) pressure sensors seal mounted to the back side of the mounting plate, each pressure sensor comprising one or more sensor ports, each of the one or more sensor port in communication with corresponding through-hole bores in the mounting plate, and a multi-channel data acquisition system configured to receive pressure signals from the two or more field-replaceable pressure sensors.


Patent Title: True gauge pressure transducer with anti-icing features of pressure ports

Patent No.: 11,680,862
Date of Patent: June 20, 2023
Abstract:
 

A gauge pressure transducer assembly having anti-icing features to allow for easy drainage of fluids to prevent pooling and icing. The assembly can include a header having one or more atmospheric ports extending therethrough, a differential sensing element mounted to the header, a header cap attached to at least a portion of the header, a gauge adapter attached to the header and in communication with the one or more atmospheric ports of the header, an elon-gated tube attached to the header cap, and a front port attached to the elongated tube. The gauge adapter includes a plurality of through-holes to facilitate drainage and de-icing, which is an improvement over conventional transduc-ers that can trap water within the ports that can freeze and cause damage. The header and the gauge adapter of the gauge pressure transducer assembly can reduce or eliminate regions where water can pool and freeze.


Patent Title: Oil fill transducer with rubber disc for dynamic protection

Patent No.: 11,585,714
Date of Patent: February 21, 2023
Abstract:
 

An oil-fill pressure transducer including a flexible member configured to protect an isolation diaphragm and sensing element. The pressure transducer includes a sensing element mounted to the header, an isolation diaphragm mounted on the front side of the header, and adjacent to the sensing element such that an oil-fill cavity is defined between the sensing element and the isolation diaphragm. The flexible member is disposed adjacent to the isolation diaphragm and a retention member is disposed adjacent to the flexible member. A cavity in communication with the retention member is configured to transmit pressure media to the isolation diaphragm via the flexible member. The flexible member can include thru-holes. The flexible member may compress under an applied positive pressure change. The flexible member may temporarily separate from at least a portion of the isolation diaphragm under an applied negative pressure change. 


Patent Title: Systems and methods for compensating the effects of absolute pressure in differential pressure sensors

Patent No.: 11,162,862
Date of Patent: November 2, 2021
Abstract:
 

A pressure transducer is disclosed that includes an absolute pressure sensor assembly, a differential pressure sensor assembly, a main pressure port in communication with the absolute pressure sensor assembly and the differential pres­sure sensor assembly, a reference pressure port in commu­nication with the differential pressure sensor assembly, and a compensation circuit in communication with the absolute pressure sensor assembly and the differential pressure sensor assembly. The compensation circuit is configured to reduce an error in an output of the differential pressure sensor assembly ( due to absolute pressure) by at least a portion of an output received from the absolute pressure sensor assem­bly.


Patent Title: Pressure transducer assembly with selectable damping inserts

Patent No.: 11,060,935
Date of Patent: July 13, 2021
Abstract:
 

A reconfigurable pressure transducer assembly having an input tube filter assembly is provided. The resonant fre­quency and dampening characteristics associate with the pressure transducer assembly may be configured by the input tube filter assembly. The input tube filter assembly includes one or more inserts disposed in an input tube channel, the one or more inserts including one or more bores of selectable dimensions and extending therethrough from a first end to a second end. The one or more inserts define an effective input tube bore, and the input tube filter assembly is tunable by selection of the selectable dimensions of the one or more inserts.


Patent Title: Field serviceable, small form-factor pressure scanner

Patent No.: 10,969,289
Date of Patent: April 6, 2021
Abstract:
 

The disclosed technology relates to a field serviceable pressure scanner suitable for high-pressure sensing applica­tions and replacement of large pressure transmitter panels. The pressure scanner includes a housing having a mounting plate comprising a plurality of through-hole bores extending from a front to back side for mating with corresponding transducer ports of the pressure sensors, and a plurality of input ports disposed on the front side of the mounting plate and in communication with the corresponding plurality of through-hole bores. The pressure scanner assembly includes two or more field-replaceable (swappable) pressure sensors seal mounted to the back side of the mounting plate, each pressure sensor comprising one or more sensor ports, each of the one or more sensor port in communication with corresponding through-hole bores in the mounting plate, and a multi-channel data acquisition system configured to receive pressure signals from the two or more field-replace­able pressure sensors.


Patent Title: Sensor having thermal gradients

Patent No.: 10,942,076
Date of Patent: March 9, 2021
Abstract:
 

The invention is an improved sensor assembly including a housing; a first header and a second header coupled to the housing; a first transducer coupled to the first header and a second transducer coupled to the second header. The first transducer is configured to measure a first pressure to generate a first pressure signal. The second transducer is configured to measure a second pressure to generate a second pressure signal. The first transducer and the second transducer are positioned in the housing such that a first temperature of the first transducer is about equivalent to a second temperature of the second transducer during opera­tion of the sensor assembly. 


Patent Title: High temperature protected wire bonded sensors
Patent No.: 10,871,415
Date of Patent: December 22, 2020
Abstract:
 

Systems and methods are disclosed for packaging sensors for use in high temperature environments. In one example implementation, a sensor device includes a header; one or more feedthrough pins extending through the header; and a sensor chip disposed on a support portion of the header. The sensor chip includes one or more contact pads. The sensor device further includes one or more wire bonded intercon­nections in electrical communication with the respective one or more contact pads and the respective one or more feedthrough pins. The sensor device includes a first sealed enclosure formed by at least a portion of the header. The first sealed enclosure is configured for enclosing and protecting at last the one or more wire bonded interconnections and the one or more contact pads from an external environment. 


Patent Title: Lowpass resonator and particulate filter for a pressure transducer
Patent No.: 10,837,854
Date of Patent: November 17, 2020
Abstract:
 

The disclosed technology includes a transducer assembly having a first transducer element. The transducer assembly includes a first filter element adjacent to least of portion of the first transducer element such that a first cavity is defined between the first filter element and the first transducer element. The first filter element includes a plurality of machined passageways in communication with the first cavity. The transducer assembly also includes an inlet pas­sage having a first end in communication with a first external portion of the transducer assembly and a second end in communication with the plurality of machined passageways. 


Patent Title: Methods of fabricating silicon-on-insulator (SOI) semiconductor devices using blanket fusion bonding
Patent No.: 10,825,719
Date of Patent: November 3, 2020
Abstract:
 

A method for fabricating silicon-on-insulator (SOI) semi­conductor devices, wherein the piezoresistive pattern is defined within a blanket doped layer after fusion bonding. This new method of fabricating SOI semiconductor devices is more suitable for simpler large scale fabrication as it provides the flexibility to select the device pattern/type at the latest stages of fabrication. 


Patent Title: Sensor header assembly for increased reliability in high-pressure environments

Patent No.: 10,788,386
Date of Patent: September 29, 2020
Abstract:
 

Header construction and techniques are disclosed that utilize header layers that provide support for electrical interconnections. A sensor header assembly includes: an upper header layer having upper through holes arranged in a first configuration; a lower header layer having lower through holes arranged in a second configuration axially offset relative to the first configuration; depressions extending from the lower header layer top surface and partially through the lower header layer, each depression defining a footprint corresponding to the first configuration of the corresponding upper through holes of the upper header layer; upper header pins extending through the corresponding upper through holes and at least partially into the corresponding lower level depressions; and lower header pins extending through the corresponding lower through holes and in electrical communication with the corresponding upper header pins.


Patent Title: Pressure scanner assemblies having replaceable sensor plates

Patent No.: 10,768,068
Date of Patent: September 8, 2020
Abstract:
 

A pressure scanner assembly having at least one replaceable sensor plate, wherein each of the replaceable sensor plates has at least one pressure sensor adapted to transmit a signal substantially indicative of a sensed pressure condition. A memory chip, which stores correction coefficients for each of the pressure sensor to compensate for thermal errors, may be installed on each of the replaceable sensor plates. The signals from the pressure sensors are multiplexed and may be outputted in analog or digital form. The pressure scanner assemblies described herein have sensor plates that can be interchanged with other sensor plates of the same or different pressure range without disrupting the electronic configuration of the pressure scanner assembly or having to recalibrate and/or update the memory chip installed thereon.


Patent Title: Two lead electronic switch system adapted to replace a mechanical switch system

Patent No.: 10,749,516
Date of Patent: August 18, 2020
Abstract:
 

Systems and methods are disclosed for a two lead electronic switch adapted to replace a mechanical switch. In one embodiment, a device is provided that includes a sensor and an electronic circuit having a voltage limiting circuit. The electronic circuit is configured to deactivate/activate the voltage limiting circuit to operate the electronic circuit in a first/second state in response to determining that an output of the sensor is less/more than a threshold voltage. The circuit includes first and second terminals configured to receive a switch voltage used to provide power for the device. The device sets the switch voltage to a first voltage level operative to power the electronic circuit and the sensor while the electronic circuit is operating in the first state and to a second voltage level operative to power the electronic circuit and the sensor while the electronic circuit is operating in the second state.


Patent Title: Systems and methods for extending frequency response of resonant transducers

Patent No.: 10,697,827
Date of Patent: June 30, 2020
Abstract:
 

Certain implementations of the disclosed technology may include systems and methods for extending a frequency response of a transducer. A method is provided that can include receiving a measurement signal from a transducer, wherein the measurement signal includes distortion due to a resonant frequency of the transducer. The method includes applying a complementary filter to the measurement signal to produce a compensated signal, wherein applying the complementary filter reduces the distortion to less than about +/?1 dB for frequencies ranging from about zero to about 60% or greater of the resonant frequency. The method further includes outputting the compensated signal.


Patent Title: Self-heated pressure sensor assemblies

Patent No.: 10,656,036
Date of Patent: May 19, 2020
Abstract:
 

The present invention provides a self-heated pressure sensor assembly and method of utilizing the same. The self-heated pressure sensor assembly regulates and maintains the temperature of the pressure sensor, regardless of the external temperature environment, without an external heater as in prior art embodiments. Exemplary embodiments of the pressure sensor assembly incorporate a resistance heater that is built into the sensing chip of the pressure sensor assembly. The pressure sensor assembly also utilizes the resistance of the pressure sensing elements to monitor the temperature of the assembly, which works alongside the resistance heater to maintain a stable temperature within the pressure sensor assembly.


Patent Title: Systems and methods for switched multi-transducer pressure sensors and compensation thereof

Patent No.: 10,634,570
Date of Patent: April 28, 2020
Abstract:
 

Systems and methods are disclosed for a switched, multiple range sensor system including multiple transducers. In one embodiment, a method is provided that includes receiving and measuring at a first transducer and a second transducer, a pressure to generate a respective first and second pressure signal; amplifying the first and second pressure signals with corresponding first and second fixed-gain amplifier to generate first and second amplified pressure signals; selecting for monitoring, the first or second amplified pressure signal; converting the selected amplified pressure signal to an intermediate digital pressure signal; measuring, at a thermal sensor associated with the selected amplified pressure signal, a temperature; compensating, based on the measured temperature, the intermediate digital pressure signal to generate a compensated digital pressure output signal; and outputting the compensated digital pressure output signal.


Patent Title: Pressure sensor having a Helmholtz resonator

Patent No.: 10,620,073
Date of Patent: April 14, 2020
Abstract:
 

This disclosure provides example methods, devices, and systems for a sensor having a Helmholtz resonator. In one embodiment, a system may comprise a sensing element; a header coupled to the sensing element; a housing coupled to the header; an adapter coupled to the housing; a screen disposed in an opening of the housing, wherein a first cavity is disposed between the screen and the sensing element and a second cavity is disposed between the adapter and the sensing element, and the screen in combination with the first cavity and the second cavity form a Helmholtz resonator.


Patent Title: Systems and methods for electrically identifying and compensating individual pressure transducers

Patent No.: 10,620,075
Date of Patent: April 14, 2020
Abstract:
 

Certain implementations of the disclosed technology may include systems, methods, and apparatus for assigning a distinct identifier (ID) to a pressure transducer based on resistor values. Embodiments include electrically identifying the distinct ID, and compensating the pressure transducer based on the distinct ID. According to an example implementation, a method is provided that can include coupling a transducer ID measurement assembly with a transducer assembly; measuring, by the transducer ID measurement assembly, a plurality of divided voltages between a plurality of configurable ID switches and a reference resistor; determining, with a processor, a distinct ID associated with the transducer assembly based on the plurality of measured divided voltages; retrieving one or more compensation parameters based on the distinct ID; and compensating, with the one or more compensation parameters, a measurement signal of the transducer assembly.


Patent Title: High-temperature headers for sensing elements

Patent No.: 10,605,685
Date of Patent: March 31, 2020
Abstract:
 

Certain implementations of the disclosed technology include systems and methods for providing header assemblies for use with pressure sensors in high-temperature environments. Certain example implementations include a header assembly. The header assembly can include a header portion having a first side and a second side, the header portion including one or more bores extending through the header portion from the first side to the second side. In certain example implementations, one or more platinum header pins are disposed within and extending through the one or more bores of the header portion. In certain example implementations, the header assembly can include one or more brazing portions corresponding to the one or more platinum header pins. In certain example implementations, the platinum header pins are configured for electrical communication with corresponding electrodes of a leadless transducer element.


Patent Title: Sensor having thermal gradients

Patent No.: 10,302,516
Date of Patent: November 7, 2019
Abstract:
 

This disclosure provides example methods, devices, and systems for a sensor having thermal gradients. In one embodiment, a system may comprise a sensor assembly including a housing; a first header and a second header coupled to the housing; a first transducer coupled to the first header, wherein the first transducer is configured to measure a first pressure to generate a first pressure signal; a second transducer coupled to the second header, wherein the second transducer is configured to measure a second pressure to generate a second pressure signal; and wherein the first transducer and the second transducer are positioned in the housing such that a first temperature of the first transducer is about equivalent to a second temperature of the second transducer during operation of the sensor assembly.


Patent Title: Header assembly for a pressure sensor

Patent No.: 10,451,511
Date of Patent: October 22, 2019
Abstract:
 

A header assembly for a pressure sensor and methods for manufacturing and using the same are provided. In one example embodiment, a header insert may include a base; a hollow protrusion coupled to the base and having a metalized inner surface and a metalized outer surface, wherein the metalized outer surface of the hollow protrusion is used to couple to a header and the metalized inner surface of the hollow protrusion is used to couple to a header pin; and wherein a seal is formed between the header, the header insert and the header pin.


Patent Title: Systems and methods for multibit code communications

Patent No.: 10,387,352
Date of Patent: August 20, 2019
Abstract:
 

Certain implementations of the disclosed technology may include systems and methods for multibit code communications that can provide more than one bit per input port. In an example implementation, a method is provided that can include measuring an input voltage at an input port in communication with a device. The method can include comparing the measured input voltage with a plurality of predetermined reference voltage levels, and determining, based on the comparing, a device ID. The method can further include outputting the device ID. Certain implementations may further include compensating a signal associated with the device based on the identified device ID.


Patent Title: Sensor having thermal gradients

Patent No.: 10,371,590
Date of Patent: August 6, 2019
Abstract:
 

This disclosure provides example methods, devices, and systems for a sensor having thermal gradients. In one embodiment, a system may comprise a sensor assembly including a housing; a first header and a second header coupled to the housing; a first transducer coupled to the first header, wherein the first transducer is configured to measure a first pressure to generate a first pressure signal; a second transducer coupled to the second header, wherein the second transducer is configured to measure a second pressure to generate a second pressure signal; and wherein the first transducer and the second transducer are positioned in the housing such that a first temperature of the first transducer is about equivalent to a second temperature of the second transducer during operation of the sensor assembly.


Patent Title: High temperature protected wire bonded sensors

Patent No.: 10,436,662
Date of Patent: August 2, 2017
Abstract:
 

Systems and methods are disclosed for packaging sensors for use in high temperature environments. In one example implementation, a sensor device includes a header; one or more feedthrough pins extending through the header; and a sensor chip disposed on a support portion of the header. The sensor chip includes one or more contact pads. The sensor device further includes one or more wire bonded interconnections in electrical communication with the respective one or more contact pads and the respective one or more feedthrough pins. The sensor device includes a first sealed enclosure formed by at least a portion of the header. The first sealed enclosure is configured for enclosing and protecting at last the one or more wire bonded interconnections and the one or more contact pads from an external environment.


Patent Title: Lowpass resonator and particulate filter for a pressure transducer

Patent No.: Patent number: 10,330,553
Date of Patent: June 25, 2019
Abstract: 
 

The disclosed technology includes a transducer assembly having a first transducer element. The transducer assembly includes a first filter element adjacent to least of portion of the first transducer element such that a first cavity is defined between the first filter element and the first transducer element. The first filter element includes a plurality of machined passageways in communication with the first cavity. The transducer assembly also includes an inlet passage having a first end in communication with a first external portion of the transducer assembly and a second end in communication with the plurality of machined passageways.


Patent Title: Sealed transducer with external adjustment port

Patent No.: Patent number: 10,309,850
Date of Patent: June 4, 2019
Abstract: 
 

Certain implementations of the disclosed technology may include systems, methods, and apparatus for a sealed transducer with an adjustment port. The sealed transducer may include one or more terminals. A first terminal may include electrical connections for connecting to an input voltage source, a ground, and for providing a transducer output signal. A second terminal, for example, may include an electrical port for connecting to an external and separately sealed adjustment network. In one example implementation, the adjustment network can include one or more components configured to couple with internal circuitry of the transducer to alter a response of the transducer.


Patent Title: Pressure sensor having an adapter joined with a screen for dimensional tolerance control
Patent No.: Patent number: 10,295,426
Date of Patent: May 21, 2019
Abstract:
 

This disclosure provides example methods, devices, and systems for a sensor having a front seal. In one embodiment, a system may comprise a sensing element; a header coupled to the sensing element; a housing coupled to the header; a screen joined to an adaptor and coupled to the housing, wherein a first gap separates the adaptor and the sensing element and a second gap separates the adaptor and the header; and wherein a stress applied at a front surface of the adaptor is transferred to the housing, and the first gap is used to isolate the sensing element from the stress and the second gap is used to isolate the header from the stress.


Patent Title: Methods of fabricating silicon-on-insulator (SOI) semiconductor devices using blanket fusion bonding
Patent No.: 10,256,138
Date of Patent: April 9, 2019
Abstract:
 

Method for fabricating silicon-on-insulator (SOI) semiconductor devices, wherein the piezoresistive pattern is defined within a blanket doped layer after fusion bonding. This new method of fabricating SOI semiconductor devices is more suitable for simpler large scale fabrication as it provides the flexibility to select the device pattern/type at the latest stages of fabrication.


Patent Title: Two-dimensional material-based accelerometer

Patent No.: 10,228,387
Date of Patent: March 12, 2019
Abstract:
 

This disclosure provides systems and methods for a two-dimensional material-based accelerometer. In one embodiment, an accelerometer comprises a substrate; a membrane suspended over an opening in the substrate to form a suspended membrane, wherein the membrane is composed of a two-dimensional material; a mass structure coupled to the suspended membrane; and wherein the mass structure distorts the suspended membrane about a first axis in response to an applied acceleration providing a first change in a conductance of the suspended membrane so that the applied acceleration along the first axis can be detected.


Patent Title: Systems and methods for liquid dynamic pressure testing
Patent No.: 10,215,656
Date of Patent: February 26, 2019
Abstract: 
 

Certain implementations of the disclosed technology may include systems and methods for dynamic pressure testing of transducers in communication with a liquid. A method is provided that can include dynamically pressurizing a liquid in a cavity associated with a housing. While dynamically pressurizing the liquid, the method includes simultaneously measuring: a change in volume of the liquid; a test frequency response, by a test transducer in communication with the liquid; and a reference frequency response, by a reference transducer in communication with the liquid. The method may further determine a normalized frequency response of the test transducer, based at least in part on the test frequency response and the reference frequency response. The method may further provide an indication of the normalized frequency response of the test transducer and an indication of the bulk modulus of the liquid.


Patent Title: Trimmable links for selectively setting transducer impedance
Patent No.: 10,215,651
Date of Patent: February 26, 2019
Abstract: 
 

Systems and methods are disclosed herein for selectively configuring an impedance of a transducer. A configurable transducer system is provided that can include a first region configured for receiving an applied stress and one or more sensing branches in communication with the first region. Each sensing branch can include an active piezoresistive area; three or more conduction paths configured in electrical communication with the active piezoresistive area; one or more trimmable links configured in parallel communication with at least two of the three or more conduction paths; and two or more connection terminals in electrical communication with the three or more conduction paths. The trimmable links are configured to be selectively opened to set a value of nominal impedance associated with the active piezoresistive area based on a desired impedance of the configurable transducer.


Patent Title: Structure for controlling tension on a threaded header
Patent No.: 10,197,458
Date of Patent: February 5, 2019
Abstract: 
 

The invention is an improved header and corresponding port associated with a transducer assembly. The header and port define mating threaded portions, thread stop portions, and a weld gap region. The thread stop portions are configured to mate and maintain a pre-loading tension between the threaded portions during and after applying a weld in the weld gap region. The weld gap region is configured to have a predetermined gap distance such that the weld seals the transducer without stress in the weld. The mating of the first and second thread stops are configured to maintain at least a portion of the pre-loading tension.


Patent Title: Self-heated pressure sensor assemblies
Patent No.: 10,184,853
Date of Patent: January 22, 2019
Abstract: 
 

The present invention provides a self-heated pressure sensor assembly and method of utilizing the same. The self-heated pressure sensor assembly regulates and maintains the temperature of the pressure sensor, regardless of the external temperature environment, without an external heater as in prior art embodiments. Exemplary embodiments of the pressure sensor assembly incorporate a resistance heater that is built into the sensing chip of the pressure sensor assembly. The pressure sensor assembly also utilizes the resistance of the pressure sensing elements to monitor the temperature of the assembly, which works alongside the resistance heater to maintain a stable temperature within the pressure sensor assembly.