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公开(公告)号：CA2878920A1
公开(公告)日：2014-02-13
申请号：CA2878920
申请日：2013-06-21
Applicant: ROSEMOUNT INC
Inventor： HEDTKE ROBERT C
IPC: G01L27/00
Abstract: 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 applied pressure being coupled to a first output and a second output. The pressure sensor (100) also has at least one resistive element therein. A current is applied through the resistive element (122) to heat (152) the pressure sensor (100). At least one output of the pressure sensor (100) is monitored (154) to determine a response of the pressure sensor (100) to current-induced heat. A verification output is provided (156) based on the response.
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公开(公告)号：CA2876385A1
公开(公告)日：2013-12-27
申请号：CA2876385
申请日：2013-04-08
Applicant: ROSEMOUNT INC
Inventor： HEDTKE ROBERT C
IPC: G01L27/00
Abstract: 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 (P2). A differential pressure sensor (56) couples to the first and second inlets (386) and provides an output related to a differential pressure between the first pressure and the second pressure. A first pressure sensor (304A) couples to the first inlet (386) and provides an output related to the first pressure. Transmitter circuitry (72) provides a transmitter output based upon the output from the differential pressure sensor and further provides enhanced functionality based upon the output from the first pressure sensor.
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53.发明专利
公开(公告)号：MX2013000351A
公开(公告)日：2013-03-22
申请号：MX2013000351
申请日：2011-06-01
Applicant: ROSEMOUNT INC
Inventor： SITTLER FRED C , BRODEN DAVID A , KLOSINSKI ANDREW J , HEDTKE ROBERT C
Abstract: Un transmisor (36) de variable de proceso para medir una presión de un fluido de proceso incluye un acoplamiento de proceso que tiene una primera lumbrera (90) configurada para acoplarse con una primera presión de proceso y una segunda lumbrera (90) configurada para acoplarse con una segunda presión de proceso. Un sensor (56) de presión diferencial se acopla con la primera y segunda lumbreras y proporciona una salida relacionada con una presión diferencial entre la primera presión y la segunda presión. El primer y segundo sensores (97, 98) de presión se acoplan con la primera y segunda lumbreras respectivas y proporcionan salidas relacionadas con la primera y segunda presiones. La circuitería (72) del transmisor se configura para proporcionar una salida del transmisor de acuerdo con la salida del sensor de presión diferencial y/o el primer y segundo sensores de presión.
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公开(公告)号：CA2802354A1
公开(公告)日：2012-01-19
申请号：CA2802354
申请日：2011-07-11
Applicant: ROSEMOUNT INC
Inventor： HEDTKE ROBERT C
Abstract: An industrial process transmitter includes a sensing system and transmitter electronics. The sensing system senses a process variable over a range. The transmitter electronics is connected to the sensing system and produces a scaled analog communication signal to communicate the process variable over an analog loop. The range is disproportionately distributed over the scale by the transmitter electronics.
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公开(公告)号：CA2694936A1
公开(公告)日：2009-02-12
申请号：CA2694936
申请日：2008-08-05
Applicant: ROSEMOUNT INC
Inventor： SITTLER FRED C , HEDTKE ROBERT C
Abstract: A process variable transmitter (12) for use in an industrial process control or monitoring system includes a transmitter housing and a process variable sensor (72) having a sensor output related to a process variable. An accelerometer (80) is coupled to the transmitter and provides an accelerometer output related to acceleration. Diagnostic circuitry (82) provides a diagnostic output as a function of the sensor output and the accelerometer output.
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Patent Agency Ranking
公开(公告)号：CA2943058C
公开(公告)日：2021-01-26
申请号：CA2943058
申请日：2015-01-13
Applicant: ROSEMOUNT INC
Inventor： HEDTKE ROBERT C
Abstract: A process variable transmitter (260) for sensing a process variable of process fluid in an industrial process includes a process gasket (200) having a surface configured to form a seal with a process vessel face. The process gasket (200) is exposed to the process fluid through an opening in the process vessel face. A process variable sensor (220) is carried by the process gasket (200) and configured to sense a process variable of the process fluid and provide a sensor output (222). Measurement circuitry (282) coupled to the process variable sensor (220) provides a process variable transmitter output related to the process variable output.
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公开(公告)号：CA2941012C
公开(公告)日：2019-05-21
申请号：CA2941012
申请日：2015-03-13
Applicant: ROSEMOUNT INC
Inventor： HEDTKE ROBERT C , SITTLER FRED C , WILLCOX CHARLES R
Abstract: A corrosion rate measurement system (130) includes a first membrane (160) of a first material configured to be exposed to a corrosive material and deflect in response to corrosion. A second membrane (162) is configured to be exposed to a corrosive material and deflect in response to corrosion. A pressure sensor (134) is operably coupled to at least one of the first and second membranes (160, 162) and configured to measure deflection of at least one of the first and second membranes (160, 162) as a function of a pressure and an amount of corrosion at least one of the first and second membranes (160, 162).
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公开(公告)号：RU2685799C1
公开(公告)日：2019-04-23
申请号：RU2018102896
申请日：2016-05-12
Applicant: ROSEMOUNT INC
Inventor： HEDTKE ROBERT C , WILLCOX CHARLES R
Abstract: Изобретениеотноситсяк областиизмерительнойтехники. Предложенасистема (100) измерениякоррозии, котораявключаетдатчик (110) коррозии, имеющийвыходнойсигналдатчикакоррозии, зависящийоткоррозиивследствиевоздействиятехнологическойтекучейсреды (104). Датчик (106) технологическогопараметравыдаетвыходнойсигнало технологическомпараметре, зависящийотпеременнойхарактеристикитекучейсреды (104). Измерительнаясхема (120), соединеннаяс датчиком (110) коррозиии датчиком (106) технологическогопараметра, выдаетвыходнойсигнал, зависящийоткоррозии, наосновевыходногосигналадатчикакоррозиии выходногосигналао технологическомпараметре. Техническийрезультат– повышенииточностии информативностиполучаемыхданных. 20 з.п. ф-лы, 5 ил.
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公开(公告)号：AU2013300083B2
公开(公告)日：2016-12-15
申请号：AU2013300083
申请日：2013-06-21
Applicant: ROSEMOUNT INC
Inventor： HEDTKE ROBERT C
IPC: G01L27/00
Abstract: 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 applied pressure being coupled to a first output and a second output. The pressure sensor (100) also has at least one resistive element therein. A current is applied through the resistive element (122) to heat (152) the pressure sensor (100). At least one output of the pressure sensor (100) is monitored (154) to determine a response of the pressure sensor (100) to current-induced heat. A verification output is provided (156) based on the response.
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公开(公告)号：CA2876385C
公开(公告)日：2016-11-29
申请号：CA2876385
申请日：2013-04-08
Applicant: ROSEMOUNT INC
Inventor： HEDTKE ROBERT C
IPC: G01L27/00
Abstract: 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 (P2). A differential pressure sensor (56) couples to the first and second inlets (386) and provides an output related to a differential pressure between the first pressure and the second pressure. A first pressure sensor (304A) couples to the first inlet (386) and provides an output related to the first pressure. Transmitter circuitry (72) provides a transmitter output based upon the output from the differential pressure sensor and further provides enhanced functionality based upon the output from the first pressure sensor.
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