IT1200492B - METHOD FOR MEASURING CAPACITANCES, IN PARTICULAR LOW CAPACITIES, IN WHICH TWO REFERENCES ARE USED - Google Patents

METHOD FOR MEASURING CAPACITANCES, IN PARTICULAR LOW CAPACITIES, IN WHICH TWO REFERENCES ARE USED

Info

Publication number: IT1200492B
Authority: IT; Italy
Prior art keywords: references; particular low; low capacities; measuring capacitances; capacitances
Prior art date: 1984-05-31

Application number

IT20967/85A

Other languages

Italian (it)

Other versions

IT8520967A0 (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.)

1984-05-31

Filing date

1985-05-30

Publication date

1989-01-18

1985-05-30 Application filed by Vaisala Oy filed Critical Vaisala Oy

1985-05-30 Publication of IT8520967A0 publication Critical patent/IT8520967A0/en

1989-01-18 Application granted granted Critical

1989-01-18 Publication of IT1200492B publication Critical patent/IT1200492B/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)

IT20967/85A 1984-05-31 1985-05-30 METHOD FOR MEASURING CAPACITANCES, IN PARTICULAR LOW CAPACITIES, IN WHICH TWO REFERENCES ARE USED IT1200492B (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
IT8520967A0 IT8520967A0 (en)	1985-05-30
IT1200492B true IT1200492B (en)	1989-01-18

Family

ID=8519172

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT20967/85A IT1200492B (en)	1984-05-31	1985-05-30	METHOD FOR MEASURING CAPACITANCES, IN PARTICULAR LOW CAPACITIES, IN WHICH TWO REFERENCES 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
GB2006970B (en) *	1977-09-23	1982-03-31	Testut Aequitas	Capacitance measuring device
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

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 IT IT20967/85A patent/IT1200492B/en active
- 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 DE DE19853519390 patent/DE3519390A1/en active Granted
- 1985-05-31 FR FR8508231A patent/FR2565353B1/en not_active Expired
- 1985-05-31 JP JP60118680A patent/JPS60262067A/en active Pending
- 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
BR8502572A (en)	1986-02-04
JPS60262067A (en)	1985-12-25
FR2565353A1 (en)	1985-12-06
GB8513830D0 (en)	1985-07-03
ZA853855B (en)	1986-03-26
FI69932C (en)	1986-05-26
DE3519390C2 (en)	1990-10-25
AU4274985A (en)	1985-12-05
CA1262372A (en)	1989-10-17
FI842193A0 (en)	1984-05-31
DE3519390A1 (en)	1985-12-12
GB2159965B (en)	1988-06-29
IT8520967A0 (en)	1985-05-30
AU587578B2 (en)	1989-08-24
FR2565353B1 (en)	1986-12-26

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Legal Events

Date	Code	Title	Description
1999-10-27	TA	Fee payment date (situation as of event date), data collected since 19931001	Effective date: 19970529