FI842193A0 - MAETNINGSFOERFARANDE FOER CAPACITANSER, SPECIELLT FOER SMAO CAPACITANSER, VID VILKET MAN ANVAENDER TVAO REFERENSER. - Google Patents

MAETNINGSFOERFARANDE FOER CAPACITANSER, SPECIELLT FOER SMAO CAPACITANSER, VID VILKET MAN ANVAENDER TVAO REFERENSER.

Info

Publication number
FI842193A0
FI842193A0 FI842193A FI842193A FI842193A0 FI 842193 A0 FI842193 A0 FI 842193A0 FI 842193 A FI842193 A FI 842193A FI 842193 A FI842193 A FI 842193A FI 842193 A0 FI842193 A0 FI 842193A0
Authority
FI
Finland
Prior art keywords
capacitanser
foer
referenser
maetningsfoerfarande
anvaender
Prior art date
Application number
FI842193A
Other languages
Finnish (fi)
Other versions
FI69932B (en
FI69932C (en
Inventor
Jorma Ponkala
Original Assignee
Vaisala Oy
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 Vaisala Oy filed Critical Vaisala Oy
Publication of FI842193A0 publication Critical patent/FI842193A0/en
Priority to FI842193A priority Critical patent/FI69932C/en
Priority to ZA853855A priority patent/ZA853855B/en
Priority to AU42749/85A priority patent/AU587578B2/en
Priority to DE19853519390 priority patent/DE3519390A1/en
Priority to CA000482808A priority patent/CA1262372A/en
Priority to IT20967/85A priority patent/IT1200492B/en
Priority to BR8502572A priority patent/BR8502572A/en
Priority to JP60118680A priority patent/JPS60262067A/en
Priority to FR8508231A priority patent/FR2565353B1/en
Priority to GB08513830A priority patent/GB2159965B/en
Publication of FI69932B publication Critical patent/FI69932B/en
Application granted granted Critical
Publication of FI69932C publication Critical patent/FI69932C/en

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
FI842193A 1984-05-31 1984-05-31 MAINTENANCE FOUNDATION CAPACITORS SPECIFIC FOR SMAR CAPACITORS VID VILKER MAN ANVAENDER TVAO REFERENSER FI69932C (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FI842193A FI69932C (en) 1984-05-31 1984-05-31 MAINTENANCE FOUNDATION CAPACITORS SPECIFIC FOR SMAR CAPACITORS VID VILKER MAN ANVAENDER TVAO REFERENSER
ZA853855A ZA853855B (en) 1984-05-31 1985-05-21 Method for the measurement of capacitances
AU42749/85A AU587578B2 (en) 1984-05-31 1985-05-22 Method and circuit for the measurement of capacitance
CA000482808A CA1262372A (en) 1984-05-31 1985-05-30 Method for the measurement of capacitances, in particular of low capacitances, wherein two references are used
DE19853519390 DE3519390A1 (en) 1984-05-31 1985-05-30 METHOD FOR MEASURING CAPACITY, ESPECIALLY SMALL CAPACITY, USING TWO REFERENCES
IT20967/85A IT1200492B (en) 1984-05-31 1985-05-30 METHOD FOR MEASURING CAPACITANCES, IN PARTICULAR LOW CAPACITIES, IN WHICH TWO REFERENCES ARE USED
BR8502572A BR8502572A (en) 1984-05-31 1985-05-30 CAPACITY MEASUREMENT PROCESS
JP60118680A JPS60262067A (en) 1984-05-31 1985-05-31 Method of measuring capacity
FR8508231A FR2565353B1 (en) 1984-05-31 1985-05-31 METHOD FOR MEASURING CAPACITIES, ESPECIALLY LOW CAPACITIES, IN WHICH TWO REFERENCE CAPACITIES ARE USED
GB08513830A GB2159965B (en) 1984-05-31 1985-05-31 Method for the measurement of capacitance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI842193 1984-05-31
FI842193A FI69932C (en) 1984-05-31 1984-05-31 MAINTENANCE FOUNDATION CAPACITORS SPECIFIC FOR SMAR CAPACITORS VID VILKER MAN ANVAENDER TVAO REFERENSER

Publications (3)

Publication Number Publication Date
FI842193A0 true FI842193A0 (en) 1984-05-31
FI69932B FI69932B (en) 1985-12-31
FI69932C FI69932C (en) 1986-05-26

Family

ID=8519172

Family Applications (1)

Application Number Title Priority Date Filing Date
FI842193A FI69932C (en) 1984-05-31 1984-05-31 MAINTENANCE FOUNDATION CAPACITORS SPECIFIC FOR SMAR CAPACITORS VID VILKER MAN ANVAENDER TVAO REFERENSER

Country Status (10)

Country Link
JP (1) JPS60262067A (en)
AU (1) AU587578B2 (en)
BR (1) BR8502572A (en)
CA (1) CA1262372A (en)
DE (1) DE3519390A1 (en)
FI (1) FI69932C (en)
FR (1) FR2565353B1 (en)
GB (1) GB2159965B (en)
IT (1) IT1200492B (en)
ZA (1) ZA853855B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI74549C (en) * 1986-02-13 1988-02-08 Vaisala Oy MAETNINGSFOERFARANDE FOER IMPEDANSER, SAERSKILT SMAO KAPACITANSER.
DE19524387C1 (en) * 1995-07-04 1996-11-07 Siemens Ag Capacitance difference measuring circuit for capacitive sensor
CN102096057B (en) * 2010-11-16 2013-10-02 北京航天测控技术有限公司 Calibration method and device of capacitance measurement circuit

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970798C (en) * 1953-05-16 1958-10-30 Rolf Scheunert Dr Ing Arrangement for measuring preferably very small capacities or changes in capacitance
DE1026860B (en) * 1956-05-24 1958-03-27 Die Bundesrepublik Deutschland Beat compensator
US3480857A (en) * 1967-12-27 1969-11-25 Ibm Digital method and apparatus for measuring small inductances and capacitances
DE2508033A1 (en) * 1975-02-25 1976-09-02 Zinn Erich Measurement of capacitance and loss factor - using automatic range finding network involving relays and comparators
US4041382A (en) * 1976-08-16 1977-08-09 The Sippican Corporation Calibrating a measurement system including bridge circuit
SE431683B (en) * 1977-09-23 1984-02-20 Testut Aequitas DEVICE FOR Saturation of the capacitance of a capacitor
FI57319C (en) * 1977-10-14 1980-07-10 Vaisala Oy ADJUSTMENT OF CAPACITY IN CAPACITY
FI54664C (en) * 1977-10-14 1979-01-10 Vaisala Oy ELECTRONIC EQUIPMENT IN THE SYNERNIZATION FOR TELEMETER MANAGEMENT IN THE SONDER
US4130796A (en) * 1977-12-07 1978-12-19 Westinghouse Electric Corp. Calibrating and measuring circuit for a capacitive probe-type instrument
AU530552B2 (en) * 1978-04-07 1983-07-21 Minister of Public Works of Nsw Wave level measuring apparatus
JPS5528157A (en) * 1978-08-19 1980-02-28 Fuji Electric Co Ltd Displacement converter
US4295091B1 (en) * 1978-10-12 1995-08-15 Vaisala Oy Circuit for measuring low capacitances
FR2446037A1 (en) * 1979-01-03 1980-08-01 Vaisala Oy Procedure in radio sonde - used when transferring signals measured with capacitive sensors, to surface station by radio transmitter (sf 28.2.79)
DE2901516C2 (en) * 1979-01-16 1985-01-24 VEGA Grieshaber GmbH & Co, 7620 Wolfach Arrangement for generating a signal proportional to a capacitance
US4322977A (en) * 1980-05-27 1982-04-06 The Bendix Corporation Pressure measuring system
SE436936B (en) * 1981-01-29 1985-01-28 Asea Ab INTEGRATED CAPACITY SENSOR
US4398426A (en) * 1981-07-02 1983-08-16 Kavlico Corporation Linear capacitive pressure transducer system
DE3321580A1 (en) * 1983-06-15 1984-12-20 Philips Patentverwaltung Gmbh, 2000 Hamburg Device for measuring temperature in order to compensate temperature-dependent errors in a capacitive differential-pressure sensor

Also Published As

Publication number Publication date
DE3519390C2 (en) 1990-10-25
GB2159965B (en) 1988-06-29
DE3519390A1 (en) 1985-12-12
ZA853855B (en) 1986-03-26
BR8502572A (en) 1986-02-04
AU587578B2 (en) 1989-08-24
AU4274985A (en) 1985-12-05
FR2565353B1 (en) 1986-12-26
GB8513830D0 (en) 1985-07-03
FI69932B (en) 1985-12-31
FI69932C (en) 1986-05-26
IT1200492B (en) 1989-01-18
CA1262372A (en) 1989-10-17
JPS60262067A (en) 1985-12-25
IT8520967A0 (en) 1985-05-30
GB2159965A (en) 1985-12-11
FR2565353A1 (en) 1985-12-06

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: VAISALA OY