RU96109477A - INSTALLATION FOR MEASURING DIFFERENTIAL PRESSURE WITH DOUBLE SENSORS - Google Patents

INSTALLATION FOR MEASURING DIFFERENTIAL PRESSURE WITH DOUBLE SENSORS

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Publication number
RU96109477A
RU96109477A RU96109477/28A RU96109477A RU96109477A RU 96109477 A RU96109477 A RU 96109477A RU 96109477/28 A RU96109477/28 A RU 96109477/28A RU 96109477 A RU96109477 A RU 96109477A RU 96109477 A RU96109477 A RU 96109477A
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Prior art keywords
pressure
sensor
measuring
output signal
housing
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RU96109477/28A
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Russian (ru)
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RU2143665C1 (en
Inventor
Л.Луважи Беннэ
С.Мунсон Грегори
Е.Уиклунд Дэвид
Дж.Звебер Майкл
А.Броден Дэвид
Дж.Бишофф Брайан
П.Корпрон Гари
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Роузмаунт Инк.
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Priority claimed from US08/258,262 external-priority patent/US5606513A/en
Application filed by Роузмаунт Инк. filed Critical Роузмаунт Инк.
Publication of RU96109477A publication Critical patent/RU96109477A/en
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Claims (1)

1. Двухпроводный датчик для измерения технологических параметров, представляющих технологический процесс, содержащий кожух модуля, включающий датчик давления для измерения технологического параметра давления, представляющего технологический процесс, и средство для приема сигнала, представляющего второй технологический параметр, средство преобразования в цифровую форму для преобразования в цифровую форму измеренных технологических параметров и кожух электронных схем, связанный с кожухом модуля и с двухпроводной линией, причем кожух электронных схем содержит микрокомпьютер для форматирования технологических параметров и электронные схемы для передачи технологических параметров в двухпроводную линию.1. A two-wire sensor for measuring technological parameters representing a technological process, comprising a module casing including a pressure sensor for measuring a technological parameter of pressure representing a technological process, and means for receiving a signal representing a second technological parameter, means for converting to digital form for conversion to digital the shape of the measured process parameters and the casing of electronic circuits associated with the casing of the module and with a two-wire line, and the skin x electronic circuits contains a microcomputer for formatting technological parameters and electronic circuits for transferring technological parameters to a two-wire line. 2. Двухпроводный датчик для снабжения данными о физическом параметре, относящемся к технологическому процессу, содержащий кожух модуля, включающий датчик давления для измерения технологического параметра давления, представляющего технологический процесс, и средство для приема сигнала, представляющего второй технологический параметр, средство преобразования в цифровую форму для преобразования в цифровую форму измеренных технологических параметров и кожух электронных схем, связанный с кожухом модуля и двухпроводной линией, причем кожух электронных схем содержит микрокомпьютер для обеспечения данных о физическом параметре в виде функции от измеренных технологических параметров и средство вывода для форматирования физического параметра и для передачи параметра в двухпроводную линию. 2. A two-wire sensor for supplying data on a physical parameter related to a technological process, comprising a module casing including a pressure sensor for measuring a technological parameter of pressure representing a technological process, and means for receiving a signal representing a second technological parameter, digitalization means for digitalization of the measured technological parameters and the casing of electronic circuits associated with the casing of the module and the two-wire line, and The electronic circuit contains a microcomputer for providing data on the physical parameter as a function of the measured technological parameters and output means for formatting the physical parameter and for transmitting the parameter to a two-wire line. 3. Измерительный датчик для снабжения данными о массовом расходе текучей среды, протекающей через трубу, датчик, передающий данные по двухпроводной линии, датчик, содержащий средство измерения для измерения технологических параметров, представляющих дифференциальное давление и линейное давление, средство для приема входного сигнала, представляющего температуру текущей среды в трубе, средство преобразования в цифровую форму для преобразования в цифровую форму измеренных технологических параметров и входного сигнала и электронные средства для снабжения данными об удельном массовом расходе текучей среды в виде функции от технологических параметров, преобразованных в цифровую форму, и входного сигнала, преобразованного в цифровую форму, и для форматирования и передачи данных по массовому расходу в двухпроводную линию, где микрокомпьютер вычисляет массовый расход с использованием коэффициента сжимаемости в виде
Figure 00000001

4. Измерительный датчик для снабжения данными о массовом расходе текучей среды, протекающей через трубу, датчик, передающий данные по двухпроводной линии, датчик, содержащий средство измерения для измерения технологических параметров, представляющих дифференциальное давление и линейное давление, средство для приема входного сигнала, представляющего температуру текущей среды в трубе, средство преобразования в цифровую форму для преобразования в цифровую форму измеренных технологических параметров и входного сигнала и электронные средства для снабжения данными об удельном массовом расходе текучей среды в виде функции от технологических параметров, преобразованных в цифровую форму, и входного сигнала, преобразованного в цифровую форму, и для форматирования и передачи данных по массовому расходу в двухпроводную линию, где микрокомпьютер вычисляет массовый расход с использованием коэффициента расхода в виде
Figure 00000002

5. Система измерения давления, имеющая связь с блоком управления, содержащая кожух датчика, в котором имеется первый порт давления, удаленный кожух, отделенный от кожуха датчика, имеющий второй порт давления, первый и второй первичные измерительные преобразователи, расположенные соответственно в первом кожухе датчика и в удаленном кожухе, и снабжающие соответственно выходными сигналами первого и второго первичных измерительных преобразователей, представляющими давление в первом и втором портах давления, нежидкостную линию связи между кожухом датчика и удаленным кожухом и электрическую схему, соединенную с блоком управления и расположенную в кожухе датчика, причем электрическая схема принимает выходной сигнал второго первичного измерительного преобразователя по нежидкостной линии связи и принимает выходной сигнал первого первичного измерительного преобразователя, при этом электрическая схема обеспечивает выходной сигнал электрической схемы для блока управления в виде функции от выходных сигналов первого и второго первичных измерительных преобразователей.
3. A measuring sensor for supplying data on the mass flow rate of the fluid flowing through the pipe, a sensor transmitting data via a two-wire line, a sensor comprising measuring means for measuring process parameters representing differential pressure and linear pressure, means for receiving an input signal representing temperature the current environment in the pipe, a means of converting to digital form for digitalizing the measured technological parameters and the input signal and electronic media means for supplying data on the specific mass flow rate of the fluid as a function of the technological parameters converted to digital form and the input signal converted to digital form, and for formatting and transmitting data on the mass flow rate to a two-wire line, where the microcomputer calculates the mass flow with using the compressibility factor in the form
Figure 00000001

4. A measuring sensor for supplying data on the mass flow rate of the fluid flowing through the pipe, a sensor transmitting data via a two-wire line, a sensor comprising measuring means for measuring process parameters representing differential pressure and linear pressure, means for receiving an input signal representing temperature the current environment in the pipe, a means of converting to digital form for digitalizing the measured technological parameters and the input signal and electronic media means for supplying data on the specific mass flow rate of the fluid as a function of the technological parameters converted to digital form and the input signal converted to digital form, and for formatting and transmitting data on the mass flow rate to a two-wire line, where the microcomputer calculates the mass flow with using a flow coefficient in the form
Figure 00000002

5. A pressure measurement system in communication with a control unit, comprising a sensor housing in which there is a first pressure port, a remote housing separated from the sensor housing, having a second pressure port, first and second primary transmitters located respectively in the first sensor housing and in a remote casing, and supplying respectively the output signals of the first and second primary measuring transducers, representing the pressure in the first and second pressure ports, a non-liquid communication line between the sensor housing and the remote housing and an electrical circuit connected to the control unit and located in the sensor housing, the electrical circuit receiving the output signal of the second primary transducer via a non-liquid communication line and receiving the output signal of the first primary transducer, while the electrical circuit provides an output signal circuits for the control unit as a function of the output signals of the first and second primary measuring transducers.
6. Система измерения по п. 5, отличающаяся тем, что выходной сигнал электрической схемы содержит сигнал, представляющий разность давлений между первым и вторым портами давления. 6. The measurement system according to claim 5, characterized in that the output signal of the electrical circuit contains a signal representing the pressure difference between the first and second pressure ports. 7. Система измерения давления, содержащая кожух первичного измерительного преобразователя, имеющий первый порт давления и первый порт связи, кожух датчика, имеющий второй порт давления и второй и третий порт связи, первый и второй первичные измерительные преобразователи, расположенные, соответственно, в кожухе первичного измерительного преобразователя и в кожухе датчика, и обеспечивающие, соответственно, формирование первого и второго электрических выходных сигналов в виде отклика на давление в первом и втором портах давления соответственно и вычислительную схему, размещенную в кожухе датчика и связанную с первым электрическим выходным сигналом и со вторым электрическим выходным сигналом, причем вычислительная схема вычисляет параметр, относящийся к давлениям в первом и втором портах давления, и обеспечивает формирование третьего электрического выходного сигнала, представляющего этот параметр. 7. A pressure measurement system comprising a housing of a primary measuring transducer having a first pressure port and a first communication port, a sensor housing having a second pressure port and a second and third communication port, first and second primary measuring transducers located, respectively, in the primary measuring housing the transducer and in the housing of the sensor, and providing, respectively, the formation of the first and second electrical output signals in the form of a response to pressure in the first and second pressure ports, respectively and the computing circuit located in the sensor housing and connected to the first electrical output signal and the second electrical output signal, the computing circuit calculating a parameter related to pressures in the first and second pressure ports and generating a third electrical output signal representing this parameter . 8. Система измерения по п. 7, отличающаяся тем, что дополнительно включает блок управления и двухпроводную линию связи, связывающую блок управления с вычислительной схемой через третий порт связи, причем блок управления запитывает электроэнергией вычислительную схему по двухпроводной линии связи. 8. The measurement system according to claim 7, characterized in that it further includes a control unit and a two-wire communication line connecting the control unit to the computing circuit through the third communication port, the control unit energizing the computing circuit via a two-wire communication line. 9. Система измерения по п. 7 или 8, отличающаяся тем, что она дополнительно включает по меньшей мере один проводник, связывающий вычислительную схему с первым первичным измерительным преобразователем давления через первый и второй порты связи. 9. The measurement system according to claim 7 or 8, characterized in that it further includes at least one conductor connecting the computing circuit to the first primary pressure transducer through the first and second communication ports. 10. Датчик для измерения давления технологической текучей среды, содержащий кожух датчика, имеющий порт давления и первый и второй электрический порт, первичный измерительный преобразователь давления, размещенный в кожухе датчика и осуществляющий связь с портом давления, причем первичный измерительный преобразователь давления обеспечивает формирование электрического выходного сигнала в виде функции от давления технологической текучей среды в порте давления, средство, размещенное в кожухе датчика, для приема в первом электрическом порте внешнего электрического выходного сигнала, представляющего давление технологической текучей среды в удаленном порте давления, внешнем по отношению к кожуху датчика и вычислительную электронную схему, размещенную в кожухе датчика и связанную со средством приема и с электрическим выходным сигналом, причем вычислительная электронная схема выполняет вычисления в виде функции от внешнего электрического выходного сигнала и электрического выходного сигнала другого давления технологической текучей среды. 10. A sensor for measuring the pressure of a process fluid, comprising a sensor housing having a pressure port and a first and second electrical port, a primary pressure transducer disposed in the sensor housing and communicating with the pressure port, wherein the primary pressure transducer generates an electrical output signal in the form of a function of the pressure of the process fluid in the pressure port, means placed in the housing of the sensor for receiving in the first electrical the mouth of the external electrical output signal representing the pressure of the process fluid in the remote pressure port external to the sensor housing and a computing electronic circuit located in the sensor housing and connected to the receiving means and the electrical output signal, and the computing electronic circuit performs calculations in the form functions of an external electrical output signal and an electrical output signal of a different process fluid pressure.
RU96109477A 1993-09-20 1994-07-29 Plant with two twin transducers to measure differential pressure RU2143665C1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US12424693A 1993-09-20 1993-09-20
US08/124,246 1993-09-20
US08/258,262 1994-06-09
US08/258,262 US5606513A (en) 1993-09-20 1994-06-09 Transmitter having input for receiving a process variable from a remote sensor
PCT/US1994/008584 WO1995008758A1 (en) 1993-09-20 1994-07-29 Differential pressure measurement arrangement utilizing dual transmitters

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RU96109477A true RU96109477A (en) 1998-10-10
RU2143665C1 RU2143665C1 (en) 1999-12-27

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EP (2) EP0720732B1 (en)
CN (1) CN1062660C (en)
AU (1) AU683916B2 (en)
BR (1) BR9407594A (en)
CA (1) CA2169444A1 (en)
DE (2) DE69420853T2 (en)
RU (1) RU2143665C1 (en)
SG (1) SG44501A1 (en)
WO (1) WO1995008758A1 (en)

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