FR2565353B1 - METHOD FOR MEASURING CAPACITIES, ESPECIALLY LOW CAPACITIES, IN WHICH TWO REFERENCE CAPACITIES ARE USED - Google Patents

METHOD FOR MEASURING CAPACITIES, ESPECIALLY LOW CAPACITIES, IN WHICH TWO REFERENCE CAPACITIES ARE USED

Info

Publication number: FR2565353B1
Authority: FR; France
Prior art keywords: capacities; measuring; especially low; low capacities; measuring capacities
Prior art date: 1984-05-31
Legal status (The legal status 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 status listed.): Expired

Application number

FR8508231A

Other languages

French (fr)

Other versions

FR2565353A1 (en

Inventor

Jorma Ponkala

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Vaisala Oy

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.)

1984-05-31

Filing date

1985-05-31

Publication date

1986-12-26

1985-05-31 Application filed by Vaisala Oy filed Critical Vaisala Oy

1985-12-06 Publication of FR2565353A1 publication Critical patent/FR2565353A1/en

1986-12-26 Application granted granted Critical

1986-12-26 Publication of FR2565353B1 publication Critical patent/FR2565353B1/en

Status Expired legal-status Critical Current

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)
Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Transmission And Conversion Of Sensor Element Output (AREA)

FR8508231A 1984-05-31 1985-05-31 METHOD FOR MEASURING CAPACITIES, ESPECIALLY LOW CAPACITIES, IN WHICH TWO REFERENCE CAPACITIES ARE USED Expired FR2565353B1 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number	Publication Date
FR2565353A1 FR2565353A1 (en)	1985-12-06
FR2565353B1 true FR2565353B1 (en)	1986-12-26

Family

ID=8519172

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR8508231A Expired FR2565353B1 (en)	1984-05-31	1985-05-31	METHOD FOR MEASURING CAPACITIES, ESPECIALLY LOW CAPACITIES, IN WHICH TWO REFERENCE CAPACITIES ARE USED

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
FI54664C (en) *	1977-10-14	1979-01-10	Vaisala Oy	ELECTRONIC EQUIPMENT IN THE SYNERNIZATION FOR TELEMETER MANAGEMENT IN THE SONDER
FI57319C (en) *	1977-10-14	1980-07-10	Vaisala Oy	ADJUSTMENT OF CAPACITY IN CAPACITY
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

1984
- 1984-05-31 FI FI842193A patent/FI69932C/en not_active IP Right Cessation
1985
- 1985-05-21 ZA ZA853855A patent/ZA853855B/en unknown
- 1985-05-22 AU AU42749/85A patent/AU587578B2/en not_active Ceased
- 1985-05-30 CA CA000482808A patent/CA1262372A/en not_active Expired
- 1985-05-30 BR BR8502572A patent/BR8502572A/en not_active IP Right Cessation
- 1985-05-30 IT IT20967/85A patent/IT1200492B/en active
- 1985-05-30 DE DE19853519390 patent/DE3519390A1/en active Granted
- 1985-05-31 JP JP60118680A patent/JPS60262067A/en active Pending
- 1985-05-31 FR FR8508231A patent/FR2565353B1/en not_active Expired
- 1985-05-31 GB GB08513830A patent/GB2159965B/en not_active Expired

Also Published As

Publication number	Publication date
FI69932B (en)	1985-12-31
GB2159965A (en)	1985-12-11
IT1200492B (en)	1989-01-18
CA1262372A (en)	1989-10-17
FI842193A0 (en)	1984-05-31
GB8513830D0 (en)	1985-07-03
AU4274985A (en)	1985-12-05
GB2159965B (en)	1988-06-29
DE3519390C2 (en)	1990-10-25
BR8502572A (en)	1986-02-04
FI69932C (en)	1986-05-26
AU587578B2 (en)	1989-08-24
DE3519390A1 (en)	1985-12-12
IT8520967A0 (en)	1985-05-30
JPS60262067A (en)	1985-12-25
ZA853855B (en)	1986-03-26
FR2565353A1 (en)	1985-12-06

Publication	Publication Date	Title
FR2586370B1 (en)	1990-01-19	VICE FOR TIGHTENING TWO PIECES
NO163962C (en)	1990-08-15	LIQUID DETERGENTS AND PROCEDURES FOR PREPARATION.
DE69005703D1 (en)	1994-02-17	Electrode for electrochemical sensors.
DE3585915D1 (en)	1992-10-15	ION SENSOR.
DE3685987D1 (en)	1992-08-20	METHOD FOR REDUCING THE VARIABLE STORAGE CAPACITY REQUIRED FOR RSA ENCRYPTION.
DE3783468D1 (en)	1993-02-18	MEASURING SAMPLE FOR WORKPIECES.
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DE3578218D1 (en)	1990-07-19	ELECTROCHEMICAL DEVICE.
IT8521120A0 (en)	1985-06-12	CONTACT ELEMENT FOR TEST ADAPTERS.
DE68912939D1 (en)	1994-03-17	Electrochemical measuring device.
DE3764862D1 (en)	1990-10-18	ION SENSOR.
GB8712817D0 (en)	1987-07-08	Determining torque in wrench system
FR2581756B1 (en)	1990-08-10	COMBINATION WEIGHING PROCESS
FI891964A0 (en)	1989-04-25	CRYSTAL ALUMINUM PHOSPHATE COMPOSITION.
IT1156144B (en)	1987-01-28	PROCEDURE FOR DETERMINING THE TIGHTENING FORCE
DE3568493D1 (en)	1989-04-06	Method for the measurement of capacitances, in particular of low capacitances
DE3864170D1 (en)	1991-09-19	MULTIPLE-WAY LIQUID COLLECTING VALVE.
FR2597974B1 (en)	1994-01-14	COMBINATION WEIGHING PROCESS
IT8583602A0 (en)	1985-01-15	TORQUE MEASURING DEVICE.
AU1874588A (en)	1989-01-12	Method for determining thyroxine uptake
FR2565353B1 (en)	1986-12-26	METHOD FOR MEASURING CAPACITIES, ESPECIALLY LOW CAPACITIES, IN WHICH TWO REFERENCE CAPACITIES ARE USED
FR2611205B1 (en)	1990-03-02	DIPEPTIDES, PROCESS FOR THE PREPARATION AND USE IN THE DETERMINATION OF PROTEASES
DK101291A (en)	1991-05-28	PHOSPHATE-FREE, HIGH-ALKALINITY LIQUID DETERGENT
ATA98585A (en)	1992-02-15	LIQUID, NON-AQUEOUS RAW DETERGENT

Legal Events

Date	Code	Title	Description
2003-02-28	ST	Notification of lapse