SE323142B - - Google Patents

Info

Publication number
SE323142B
SE323142B SE13387/63A SE1338763A SE323142B SE 323142 B SE323142 B SE 323142B SE 13387/63 A SE13387/63 A SE 13387/63A SE 1338763 A SE1338763 A SE 1338763A SE 323142 B SE323142 B SE 323142B
Authority
SE
Sweden
Application number
SE13387/63A
Inventor
T Lode
Original Assignee
Rosemount Eng Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rosemount Eng Co Ltd filed Critical Rosemount Eng Co Ltd
Publication of SE323142B publication Critical patent/SE323142B/xx

Links

Classifications

    • 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
    • G01R27/2605—Measuring capacitance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
    • G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
    • G01L13/025—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using diaphragms
    • 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
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measurement Of Current Or Voltage (AREA)
SE13387/63A 1962-12-04 1963-12-03 SE323142B (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US242166A US3271669A (en) 1962-12-04 1962-12-04 Alternating current diode loop capacitance measurement circuits

Publications (1)

Publication Number Publication Date
SE323142B true SE323142B (xx) 1970-04-27

Family

ID=22913711

Family Applications (1)

Application Number Title Priority Date Filing Date
SE13387/63A SE323142B (xx) 1962-12-04 1963-12-03

Country Status (4)

Country Link
US (1) US3271669A (xx)
DE (1) DE1616908B1 (xx)
GB (1) GB1001806A (xx)
SE (1) SE323142B (xx)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497801A (en) * 1967-02-23 1970-02-24 Schwien Eng Inc System for determining the difference in capacitance of two capacitors
US3479588A (en) * 1967-05-12 1969-11-18 Canadian Patents Dev Displacement measuring device including a spaced four-corner electrode array
US3495167A (en) * 1968-05-24 1970-02-10 Leeds & Northrup Co Balanceable systems using diode-rings for null measurement of impedance or reciprocal thereof
US3646538A (en) * 1969-10-27 1972-02-29 Rosemount Eng Co Ltd Transducer circuitry for converting a capacitance signal to a dc current signal
US3688190A (en) * 1970-09-25 1972-08-29 Beckman Instruments Inc Differential capacitance circuitry for differential pressure measuring instruments
US3753092A (en) * 1971-04-08 1973-08-14 Johanna Plastics Inc Liquid testing device for measuring changes in dielectric properties
JPS5818678B2 (ja) * 1975-08-25 1983-04-14 横河電機株式会社 変位電気信号変換装置
JPS5438509B1 (xx) * 1975-12-18 1979-11-21
CA1123225A (en) * 1978-02-15 1982-05-11 Bendix Corporation (The) Compensated capacitive transducer demodulator circuit
US4289035A (en) * 1978-02-15 1981-09-15 The Bendix Corporation Compensated capacitive transducer demodulator circuit
US4193063A (en) * 1978-05-15 1980-03-11 Leeds & Northrup Company Differential capacitance measuring circuit
US4250490A (en) * 1979-01-19 1981-02-10 Rosemount Inc. Two wire transmitter for converting a varying signal from a remote reactance sensor to a DC current signal
US4389646A (en) * 1980-04-30 1983-06-21 Fuji Electric Co. Ltd. Displacement converting circuit arrangement
US4339750A (en) * 1980-08-20 1982-07-13 Rosemount Inc. Low power transmitter
US4381677A (en) * 1981-01-23 1983-05-03 Rosemount Inc. Reactance measurement circuit
US9869599B2 (en) 2014-09-30 2018-01-16 Rosemount Inc. High-temperature pressure sensing
WO2020231613A1 (en) * 2019-05-15 2020-11-19 Sumitomo (Shi) Cryogenics Of America, Inc. Bridge voltage inversion circuit for vacuum gauge and pressure gauge sensor having the voltage inversion circuit

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452244A (en) * 1944-03-31 1948-10-26 Lewis Eng Co Electrical ratio meter circuit
US2581085A (en) * 1945-02-01 1952-01-01 Liquidometer Corp Liquid level gauge
US2485579A (en) * 1946-03-01 1949-10-25 Myron A Elliott Fluid inspection apparatus
US2696566A (en) * 1949-10-20 1954-12-07 Kurt S Lion Electric transducer system
GB734684A (en) * 1953-04-29 1955-08-03 British Telecomm Res Ltd Improvements in and relating to electric modulators
US2766428A (en) * 1954-09-09 1956-10-09 Weston Electrical Instr Corp Capacitance measuring circuit
NL102003C (xx) * 1955-05-04
US2934700A (en) * 1955-05-27 1960-04-26 Charles E Holaday Apparatus for determining the oil content of substances
US3032722A (en) * 1957-12-05 1962-05-01 Fielden Electronics Ltd Transistor oscillators and capacity sensitive circuits comprising such oscillators
US3031614A (en) * 1958-01-10 1962-04-24 Wayne Kerr Lab Ltd Electrical measuring bridges
US2972106A (en) * 1958-04-09 1961-02-14 Western Electric Co Automatic alternating current bridge
US3039051A (en) * 1959-08-12 1962-06-12 Zellweger Uster Ag Apparatus for gaging textile materials
US3119267A (en) * 1961-01-16 1964-01-28 Gen Controls Co Capacitance measuring apparatus
DE1228714B (de) * 1961-01-27 1966-11-17 Gossen & Co Gmbh P Anordnung zur Frequenzmessung
US3142985A (en) * 1961-11-13 1964-08-04 Instr Inc Net oil meter
US3134947A (en) * 1961-11-28 1964-05-26 Honeywell Regulator Co Amplitude stabilized transistor oscillator
US3142016A (en) * 1961-12-18 1964-07-21 Clarke C Minter Ratio-measuring apparatus utilizing a capacitance bridge circuit

Also Published As

Publication number Publication date
GB1001806A (en) 1965-08-18
DE1616908B1 (de) 1970-08-06
US3271669A (en) 1966-09-06

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