KR910004623B1 - 교류 리액턴스 센서의 리액턴스 측정회로 및 이를 이용한 2선식 송신기 - Google Patents

교류 리액턴스 센서의 리액턴스 측정회로 및 이를 이용한 2선식 송신기 Download PDF

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Publication number
KR910004623B1
KR910004623B1 KR8200299A KR820000299A KR910004623B1 KR 910004623 B1 KR910004623 B1 KR 910004623B1 KR 8200299 A KR8200299 A KR 8200299A KR 820000299 A KR820000299 A KR 820000299A KR 910004623 B1 KR910004623 B1 KR 910004623B1
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KR
South Korea
Prior art keywords
reactance
sensor
oscillator
signal
output
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Expired
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KR8200299A
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English (en)
Korean (ko)
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KR830009480A (ko
Inventor
리챠드 루에쉬 제임즈
레오나드 프릭 로저
아서 그라인드 레임 어얼
Original Assignee
원본미기재
로즈마운트 인코오포레이티드
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Publication of KR830009480A publication Critical patent/KR830009480A/ko
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Publication of KR910004623B1 publication Critical patent/KR910004623B1/ko
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor
    • G01L9/125—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor with temperature compensating means

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
KR8200299A 1981-01-23 1982-01-23 교류 리액턴스 센서의 리액턴스 측정회로 및 이를 이용한 2선식 송신기 Expired KR910004623B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US227736 1981-01-23
US06/227,736 US4381677A (en) 1981-01-23 1981-01-23 Reactance measurement circuit

Publications (2)

Publication Number Publication Date
KR830009480A KR830009480A (ko) 1983-12-21
KR910004623B1 true KR910004623B1 (ko) 1991-07-08

Family

ID=22854253

Family Applications (1)

Application Number Title Priority Date Filing Date
KR8200299A Expired KR910004623B1 (ko) 1981-01-23 1982-01-23 교류 리액턴스 센서의 리액턴스 측정회로 및 이를 이용한 2선식 송신기

Country Status (20)

Country Link
US (1) US4381677A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0070301B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPH0465330B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR910004623B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AR (1) AR231193A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU555333B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BR (1) BR8205675A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1181132A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3274761D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FI (1) FI76436C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2106255B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
HK (1) HK89985A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
HU (1) HU192104B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IL (1) IL64773A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IN (1) IN156305B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1150360B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
MX (1) MX151290A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO (1) WO1982002595A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
YU (1) YU43253B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA82324B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519253A (en) * 1983-04-29 1985-05-28 Rosemount Inc. Reactance measurement circuit with enhanced linearity
US5083091A (en) * 1986-04-23 1992-01-21 Rosemount, Inc. Charged balanced feedback measurement circuit
IL82194A (en) * 1986-04-23 1992-03-29 Rosemount Inc Measurement circuit
US4791352A (en) * 1986-07-17 1988-12-13 Rosemount Inc. Transmitter with vernier measurement
US4748852A (en) * 1986-10-10 1988-06-07 Rosemount Inc. Transmitter with an improved span adjustment
US5028876A (en) * 1989-01-30 1991-07-02 Dresser Industries, Inc. Precision capacitive transducer circuits and methods
US5329818A (en) * 1992-05-28 1994-07-19 Rosemount Inc. Correction of a pressure indication in a pressure transducer due to variations of an environmental condition
US6252512B1 (en) * 1999-03-05 2001-06-26 Hill-Rom, Inc. Monitoring system and method
US6035694A (en) * 1999-03-12 2000-03-14 I/O Of Austin, Inc. Method and apparatus for calibration of stray capacitance mismatch in a closed loop electro-mechanical accelerometer
AUPQ663600A0 (en) * 2000-04-03 2000-05-04 Accent Hydroponics Pty Ltd Electrical conductivity measurement circuit
US6516672B2 (en) 2001-05-21 2003-02-11 Rosemount Inc. Sigma-delta analog to digital converter for capacitive pressure sensor and process transmitter
JP4906006B2 (ja) * 2006-03-29 2012-03-28 ローズマウント インコーポレイテッド 静電容量検出回路
CN116973634B (zh) * 2023-09-25 2024-02-13 河南师范大学 测量液体介电常数的传感器及测量乙醇浓度的方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB977125A (en) 1962-02-02 1964-12-02 Bendix Corp Electric bridges
US3271669A (en) * 1962-12-04 1966-09-06 Rosemount Eng Co Ltd Alternating current diode loop capacitance measurement circuits
DE1945021A1 (de) 1969-09-05 1971-03-11 Juergen Blumenauer Einrichtung zur Messung des Kapazitaetsunterschiedes von Kondensatoren
US3646538A (en) * 1969-10-27 1972-02-29 Rosemount Eng Co Ltd Transducer circuitry for converting a capacitance signal to a dc current signal
US3718856A (en) * 1970-12-02 1973-02-27 Teradyne Inc Inductance and capacitance reactance measuring instrument having minimal inclusion of stray reactances
JPS5643813B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-06-16 1981-10-15
US3965746A (en) * 1974-11-04 1976-06-29 Teledyne Industries, Inc. Pressure transducer
US3975719A (en) * 1975-01-20 1976-08-17 Rosemount Inc. Transducer for converting a varying reactance signal to a DC current signal
US4093915A (en) * 1976-01-12 1978-06-06 Setra Systems, Inc. Capacitance measuring system
US4153873A (en) * 1977-10-11 1979-05-08 Rosemount Inc. Transducer for converting a varying analog current signal to a binary digital signal
GB2034051A (en) 1978-10-12 1980-05-29 Smiths Industries Ltd Fluid Gauging System
JPS5637509A (en) * 1979-09-03 1981-04-11 Yokogawa Hokushin Electric Corp Displacement detector

Also Published As

Publication number Publication date
FI76436C (fi) 1988-10-10
AR231193A1 (es) 1984-09-28
MX151290A (es) 1984-11-06
IT1150360B (it) 1986-12-10
YU15282A (en) 1985-03-20
FI823243L (fi) 1982-09-21
YU43253B (en) 1989-06-30
US4381677A (en) 1983-05-03
KR830009480A (ko) 1983-12-21
IL64773A (en) 1985-02-28
ZA82324B (en) 1982-12-29
HK89985A (en) 1985-11-22
GB2106255A (en) 1983-04-07
IN156305B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1985-06-15
GB2106255B (en) 1985-01-30
JPH0465330B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-10-19
HU192104B (en) 1987-05-28
JPS57502230A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1982-12-16
BR8205675A (pt) 1982-12-14
EP0070301A4 (en) 1983-12-01
EP0070301B1 (en) 1986-12-17
WO1982002595A1 (en) 1982-08-05
FI76436B (fi) 1988-06-30
EP0070301A1 (en) 1983-01-26
CA1181132A (en) 1985-01-15
FI823243A0 (fi) 1982-09-21
DE3274761D1 (en) 1987-01-29
IT8247627A0 (it) 1982-01-22
AU8147082A (en) 1982-08-16
AU555333B2 (en) 1986-09-18

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