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公开(公告)号：AU6525400A
公开(公告)日：2001-03-13
申请号：AU6525400
申请日：2000-08-07
Applicant: ROSEMOUNT INC
Inventor： SITTLER FRED C , RUD STANLEY E JR , GANSEN CARL R
IPC: G01L15/00
Abstract: A pressure transmitter with first and second absolute pressure sensors receives process pressures from corresponding first and second process inlets. A transmitter circuit coupled to the first and second absolute pressure sensors generates a differential pressure type output. A third absolute pressure sensor coupled to the transmitter circuit receives atmospheric pressure from a third inlet. The transmitter circuit generates a second type of transmitter output that can be a gage or absolute pressure type. Single crystal. sapphire pressure sensors are preferred to provide enough accuracy for measuring accurately over 200:1 pressure range.
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公开(公告)号：CA2283588A1
公开(公告)日：1998-09-24
申请号：CA2283588
申请日：1998-03-06
Applicant: ROSEMOUNT INC
Inventor： SITTLER FRED C
Abstract: A process control transmitter (10) includes a transmitter housing (12) and transmitter circuitry (20) adapted for providing a transmitter output related to a sensed pressure. A sensor coupling (42) in the housing (12) defines a pressure sensor cavity which is filled with isolation fluid. An isolation diaphragm (46) separates the sensor cavity from a process fluid and is adapted to transmit pressure therebetween. The pressure sensor (16) is mounted in the sensor cavity and provides an output related to pressure to the transmitter circuitry (20). A thermal compensation member (44) is coupled to the sensor cavity and has a thermal expansion coefficient which is different than a thermal expansion coefficient for the sensor coupling (42). The compensation member (44) is adapted to compensate for pressure changes due to thermal expansion of the components or isolation fluid.
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公开(公告)号：AU6770394A
公开(公告)日：1994-12-20
申请号：AU6770394
申请日：1994-04-19
Applicant: ROSEMOUNT INC
Inventor： SITTLER FRED C
Abstract: In this invention, a first sensor senses an organic gas, liquid or vapor and includes a first support having a first support surface with a layer of material fastened to it. In the presence of liquid, gas or vapor, the material swells and expands so as to vary at least one of its dimensions. Such expansion develops a stress at an interface between the first support surface and the material, and strain sensitive resistors detect the stress and produce an output which varies as a function of the stress at the interface. One of a pair of piezoresistors is located where there is increased stress and the other piezoresistor is disposed where there is reduced stress. If desired, a second sensor similar in structure to the first but exposed only to a reference organic liquid, gas or vapor temperature compensates the first. In another embodiment of the invention, an organic chemical responsive sensor includes a first support having a first support surface and a first capacitor plate fastened to the first support. A second support coupled to the first support spaces a second capacitor plate a distance away from the first plate. A material which expands in the presence of organic liquid, gas or vapor is applied to the first support surface so that upon expansion, the first support deflects and changes the distance between the two capacitor plates, thereby changing an electrical capacity between the plates. Another sensor of similar structure may optionally temperature compensate the first.
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公开(公告)号：DE3773213D1
公开(公告)日：1991-10-24
申请号：DE3773213
申请日：1987-02-06
Applicant: ROSEMOUNT INC
Inventor： SITTLER FRED C , TOY ADRIAN C
Abstract: A thin film platinum resistance thermometer capable of operation at elevated temperatures includes a benign dielectric layer covering the thin film platinum resistance temperature sensing element and a barrier layer overlying the dielectric layer. The barrier layer, which is preferrably titanium dioxide, resists diffusion of contaminants which would alter the electrical characteristics of the sensing element, while permitting diffusion of oxygen through the barrier layer.
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公开(公告)号：DK30288D0
公开(公告)日：1988-01-22
申请号：DK30288
申请日：1988-01-22
Applicant: ROSEMOUNT INC
Inventor： SITTLER FRED C , BOHARA ROBERT C
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Patent Agency Ranking36.发明公开
公开(公告)号：EP0327535A4
公开(公告)日：1989-04-27
申请号：EP87901835
申请日：1987-02-06
Applicant: ROSEMOUNT INC
Inventor： SITTLER FRED C , TOY ADRIAN C
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37.发明公开PRESSURE SENSOR USING NEAR NET SHAPE SINTERED CERAMICS 审中-公开DRUCKENSENS MIT GESINTERTER KERAMIK MIT NEAR-NET-FORM
公开(公告)号：EP2018533A4
公开(公告)日：2016-03-23
申请号：EP07755929
申请日：2007-04-24
Applicant: ROSEMOUNT INC
Inventor： SITTLER FRED C , GANSEN CARL R
IPC: G01L13/02
CPC classification number: G01L13/02 , B33Y80/00 , G01L9/0075
Abstract: A capacitive pressure sensor is formed with sensor body and diaphragm components made of near net shapeable sintered ceramic. In one configuration, the differential pressure sensor has two sintered ceramic cell halves with an internal sintered ceramic diaphragm captured between the two cell halves. In another configuration, two side-by-side sintered ceramic cell halves have individual sintered ceramic diaphragms, and the chambers of the two cell halves are connected by metal tubing.
Abstract translation: 电容式压力传感器由传感器主体和隔膜部件形成，由近网形可烧结陶瓷制成。 在一种构造中，差压传感器具有两个烧结陶瓷电池半部，其中内部烧结陶瓷膜片被捕获在两个电池半部之间。 在另一种结构中，两个并排的烧结陶瓷电池半部具有单独的烧结陶瓷膜片，两个电池半部的腔室通过金属管连接。
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公开(公告)号：EP0609326A4
公开(公告)日：1995-05-03
申请号：EP92922017
申请日：1992-10-07
Applicant: ROSEMOUNT INC
Inventor： BENTON BARRY W , MAJERUS LAWRENCE R , RUTT DONALD R , SITTLER FRED C , TOY ADRIAN C
IPC: G01N27/30 , G01N27/333 , G01N27/26
CPC classification number: G01N27/333
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公开(公告)号：RU2672455C1
公开(公告)日：2018-11-14
申请号：RU2018101205
申请日：2016-06-21
Applicant: ROSEMOUNT INC
Inventor： FADELL PAUL R , SCHUMACHER MARK S , PRICE JOSHUA M , SITTLER FRED C
Abstract: Группаизобретенийотноситсяк областибиотехнологии. Предложеныпредназначеннаядлясоединенияодноразовогоконтейнерас приборомдляизмерениядавленияполимернаясистема, способпередачидавлениябиореактораприборудляизмерениядавленияи измерительнаясистемадляжидкости. Полимернаясистемасодержитсоединительноесредстводляприсоединенияк одноразовомуконтейнерус изгибаемойв ответнадавлениев одноразовомконтейнередиафрагмой, атакжесоединительноесредстводляприсоединенияк приборудляизмерениядавления, выполненноес возможностьюпередачидавлениятекучейсредык изолирующейдиафрагмеприбора, исоединяющуюуказанныесредстватрубку. Способвключаетприсоединениесоединительногосредствак биореактору, стерилизациюбиореактора, присоединениесоединительногосредствак приборудляизмерениядавления, введениеобразцав биореактори измерениедавленияв биореакторе. Измерительнаясистемасодержитуказаннуюполимернуюсистемуи измерительныйприборс изолирующейдиафрагмой. Изобретенияобеспечиваютвозможностьнеоднократногоиспользованияточногои сложногоизмерительногоприборас беспроводнойсвязьювместес разнымиодноразовымиконтейнерамибезочистки. 3 н. и 18 з.п. ф-лы, 7 ил.
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公开(公告)号：CA2989861A1
公开(公告)日：2017-01-05
申请号：CA2989861
申请日：2016-06-21
Applicant: ROSEMOUNT INC
Inventor： FADELL PAUL R , SCHUMACHER MARK S , PRICE JOSHUA M , SITTLER FRED C
Abstract: A polymeric remote seal system is provided for coupling a single-use container (110) to a pressure measurement instrument (104). The polymeric remote seal system includes a process-side coupling (116), an instrument-side coupling (118) and a fluidic coupling (106) therebetween. The process-side coupling (116) is configured to couple to the single-use container (110) and is formed of a radiation sterilizable polymer. The process-side coupling (116) has a process-side deflectable diaphragm (256; 234) that is configured to deflect in response to pressure within the single-use container (110). The instrument-side coupling (118) is configured to couple to the pressure measurement instrument (104) and is formed of a radiation sterilizable polymer. The instrument-side coupling (118) is configured to fluidically convey fluid pressure to an isolation diaphragm of the pressure measurement instrument. Tubing (106) fluidically couples the process-side coupling (116) to the instrument-side coupling (118).
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