HEAT FLUX SENSOR WITH IMPROVED HEAT TRANSFER

    公开(公告)号:CA3093432A1

    公开(公告)日:2019-09-12

    申请号:CA3093432

    申请日:2019-02-22

    Applicant: ROSEMOUNT INC

    Inventor: RUD JASON H

    Abstract: A sensor capsule (300) for a heat flux sensor includes a hot end (304) and a cold end (302). The sensor capsule (300) includes a thermal conductor (310) extending from the hot end (304) toward the cold end (302), and a plurality of temperature sensors (312, 354) coupled to the thermal conductor (310) at different distances from the hot end (304).

    НЕИНТРУЗИВНАЯ СИСТЕМА РАСЧЕТА ТЕМПЕРАТУРЫ ТЕХНОЛОГИЧЕСКОЙ СРЕДЫ

    公开(公告)号:RU2689280C1

    公开(公告)日:2019-05-24

    申请号:RU2018130672

    申请日:2016-01-25

    Applicant: ROSEMOUNT INC

    Abstract: Изобретениеотноситсяк областиизмерительнойтехникии можетбытьиспользованодляизмерениятемпературытехнологическихсред. Предложенасистемарасчетатемпературытехнологическойсреды, котораявключаетв себяпервыйдатчиктемпературы, установленныйдляизмерениявнешнейтемпературыканаладлятехнологическойсреды. Системарасчетатемпературытехнологическойсредыимеетшток, обладающийизвестнымтепловымсопротивлением. Второйдатчиктемпературыотделенштокомотпервогодатчикатемпературы. Измерительнаяцепьсвязанас первыми вторымдатчикамитемпературы. Микропроцессорсвязанс измерительнойцепьюдляприемаинформациио температуреотизмерительнойцепии дляобеспеченияоценкитемпературытехнологическойсредыв каналедлятехнологическойсредыс использованиемрасчетаудельноготепловогопотока. Техническийрезультат– повышениеточностиполучаемыхданных. 3 н. и 17 з.п. ф-лы, 6 ил.

    PROCESS VARIABLE MEASUREMENT NOISE DIAGNOSTIC

    公开(公告)号:CA2886533C

    公开(公告)日:2018-01-02

    申请号:CA2886533

    申请日:2013-09-23

    Applicant: ROSEMOUNT INC

    Abstract: A process variable transmitter (10) includes an analog-to-digital (A/D) converter (22) that receives a sensor signal (20) provided by a sensor (18) that senses a process variable and converts the sensor signal (20) to a digital signal. A processor (24) receives the digital signal and provides a measurement output indicative of the digital signal. A noise detector (26) receives the sensor signal (20) and generates a first value indicative of a number of positive noise events relative to a positive threshold value and a second value indicative of a number of negative noise events relative to a negative threshold value. The processor (24) evaluates the noise count and generates a noise output, indicative of detected noise, based on the first and second values.

    PROCESS TEMPERATURE TRANSMITTER WITH IMPROVED SENSOR DIAGNOSTICS

    公开(公告)号:CA2900474C

    公开(公告)日:2017-11-07

    申请号:CA2900474

    申请日:2013-12-12

    Applicant: ROSEMOUNT INC

    Inventor: RUD JASON H

    Abstract: A process temperature transmitter (12) is operable with at least one temperature sensor (32) having a plurality of leads. The temperature transmitter (12) includes measurement circuitry (26) operably coupleable to the at least one temperature sensor (32) to provide an indication of an electrical parameter of the at least one temperature sensor (32). A controller (30) is coupled to the measurement circuitry (26) to obtain the indication and provide a process temperature output. A current source (28) applies a test current to the plurality of leads simultaneously. Diagnostic circuitry (70) measures a voltage response on each lead in order to provide a diagnostic indication of the temperature sensor.

    PROCESS FLUID TEMPERATURE MEASUREMENT

    公开(公告)号:CA2809659C

    公开(公告)日:2016-02-16

    申请号:CA2809659

    申请日:2011-08-11

    Applicant: ROSEMOUNT INC

    Abstract: An apparatus (12) for measuring a temperature of a process fluid includes a resistance based temperature sensor (RTD) sensor (32) configured to thermally couple to the process fluid. First and second electrical connections are configured to apply a current through the RTD (32). Measurement circuitry (36) is configured to measure a voltage across the RTD (32) and identify a degraded connection to the RTD and responsively measure a temperature of the process fluid using the electrical connections.

    Process variable measurement noise diagnostic

    公开(公告)号:AU2013323856A1

    公开(公告)日:2015-04-16

    申请号:AU2013323856

    申请日:2013-09-23

    Applicant: ROSEMOUNT INC

    Abstract: A process variable transmitter (10) includes an analog-to-digital (A/D) converter (22) that receives a sensor signal (20) provided by a sensor (18) that senses a process variable and converts the sensor signal (20) to a digital signal. A processor (24) receives the digital signal and provides a measurement output indicative of the digital signal. A noise detector (26) receives the sensor signal (20) and generates a first value indicative of a number of positive noise events relative to a positive threshold value and a second value indicative of a number of negative noise events relative to a negative threshold value. The processor (24) evaluates the noise count and generates a noise output, indicative of detected noise, based on the first and second values.

    PROCESS TEMPERATURE TRANSMITTER WITH IMPROVED SENSOR DIAGNOSTICS

    公开(公告)号:CA2900474A1

    公开(公告)日:2014-08-28

    申请号:CA2900474

    申请日:2013-12-12

    Applicant: ROSEMOUNT INC

    Inventor: RUD JASON H

    Abstract: A process temperature transmitter (12) is operable with at least one temperature sensor (32) having a plurality of leads. The temperature transmitter (12) includes measurement circuitry (26) operably coupleable to the at least one temperature sensor (32) to provide an indication of an electrical parameter of the at least one temperature sensor (32). A controller (30) is coupled to the measurement circuitry (26) to obtain the indication and provide a process temperature output. A current source (28) applies a test current to the plurality of leads simultaneously. Diagnostic circuitry (70) measures a voltage response on each lead in order to provide a diagnostic indication of the temperature sensor.

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