FI900592A - MAETKOPPLING FOER SMAO KAPASITANSER. - Google Patents

MAETKOPPLING FOER SMAO KAPASITANSER.

Info

Publication number
FI900592A
FI900592A FI900592A FI900592A FI900592A FI 900592 A FI900592 A FI 900592A FI 900592 A FI900592 A FI 900592A FI 900592 A FI900592 A FI 900592A FI 900592 A FI900592 A FI 900592A
Authority
FI
Finland
Prior art keywords
maetkoppling
kapasitanser
smao
foer
smao kapasitanser
Prior art date
Application number
FI900592A
Other languages
Finnish (fi)
Other versions
FI84666C (en
FI84666B (en
FI900592A0 (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 FI900592A0 publication Critical patent/FI900592A0/en
Priority to FI900592A priority Critical patent/FI84666C/en
Priority to AU69491/91A priority patent/AU6949191A/en
Priority to ZA91506A priority patent/ZA91506B/en
Priority to GB9101869A priority patent/GB2242279A/en
Priority to DE4103433A priority patent/DE4103433A1/en
Priority to BR919100486A priority patent/BR9100486A/en
Priority to ITMI910300A priority patent/IT1245137B/en
Priority to CA002035909A priority patent/CA2035909A1/en
Priority to FR9101380A priority patent/FR2657963A1/en
Publication of FI900592A publication Critical patent/FI900592A/en
Application granted granted Critical
Publication of FI84666B publication Critical patent/FI84666B/en
Publication of FI84666C publication Critical patent/FI84666C/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)
FI900592A 1990-02-07 1990-02-07 MAETKOPPLING FOER SMAO KAPASITANSER. FI84666C (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FI900592A FI84666C (en) 1990-02-07 1990-02-07 MAETKOPPLING FOER SMAO KAPASITANSER.
AU69491/91A AU6949191A (en) 1990-02-07 1991-01-21 Measurement coupling for low capacitances
ZA91506A ZA91506B (en) 1990-02-07 1991-01-23 Measurement coupling for low capacitances
GB9101869A GB2242279A (en) 1990-02-07 1991-01-29 Measuring low capacitances
DE4103433A DE4103433A1 (en) 1990-02-07 1991-02-05 MEASURING CIRCUIT FOR SMALL CAPACITIES
BR919100486A BR9100486A (en) 1990-02-07 1991-02-06 COUPLING FOR LOW CAPACITY MEASUREMENT
ITMI910300A IT1245137B (en) 1990-02-07 1991-02-06 COUPLING FOR LOW CAPACITY MEASUREMENT
CA002035909A CA2035909A1 (en) 1990-02-07 1991-02-07 Measurement coupling for low capacitances
FR9101380A FR2657963A1 (en) 1990-02-07 1991-02-07 MEASURING CIRCUIT FOR LOW CAPACITIES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI900592A FI84666C (en) 1990-02-07 1990-02-07 MAETKOPPLING FOER SMAO KAPASITANSER.
FI900592 1990-02-07

Publications (4)

Publication Number Publication Date
FI900592A0 FI900592A0 (en) 1990-02-07
FI900592A true FI900592A (en) 1991-08-08
FI84666B FI84666B (en) 1991-09-13
FI84666C FI84666C (en) 1991-12-27

Family

ID=8529843

Family Applications (1)

Application Number Title Priority Date Filing Date
FI900592A FI84666C (en) 1990-02-07 1990-02-07 MAETKOPPLING FOER SMAO KAPASITANSER.

Country Status (9)

Country Link
AU (1) AU6949191A (en)
BR (1) BR9100486A (en)
CA (1) CA2035909A1 (en)
DE (1) DE4103433A1 (en)
FI (1) FI84666C (en)
FR (1) FR2657963A1 (en)
GB (1) GB2242279A (en)
IT (1) IT1245137B (en)
ZA (1) ZA91506B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19513022C1 (en) * 1995-04-06 1996-08-14 Siemens Ag Differential capacitance measuring circuit for pressure sensor
DE19625666C1 (en) * 1996-06-26 1998-01-15 Siemens Ag Readout shaft and capacitive measuring sensor
DE102004006020A1 (en) 2004-02-06 2005-08-25 E + E Elektronik Ges.M.B.H. Circuit arrangement for capacitive humidity measurement and method for operating the same
US8030949B2 (en) * 2008-10-31 2011-10-04 Testo Ag Measurement method for determining moisture content
CN101738422B (en) * 2009-12-23 2012-09-05 北京宝力马传感技术有限公司 Humidity measuring device and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886447A (en) * 1972-05-17 1975-05-27 Iwatsu Electric Co Ltd Capacitance-voltage converter
GB2058364B (en) * 1979-09-01 1983-03-23 Ferranti Ltd Capacitance measuring apparatus
US4794320A (en) * 1987-08-10 1988-12-27 Moore Products Co. Multi-frequency capacitance sensor

Also Published As

Publication number Publication date
CA2035909A1 (en) 1991-08-08
GB9101869D0 (en) 1991-03-13
ZA91506B (en) 1991-10-30
ITMI910300A0 (en) 1991-02-06
FI84666C (en) 1991-12-27
FR2657963A1 (en) 1991-08-09
ITMI910300A1 (en) 1992-08-06
IT1245137B (en) 1994-09-13
BR9100486A (en) 1991-10-29
GB2242279A (en) 1991-09-25
DE4103433A1 (en) 1991-08-08
AU6949191A (en) 1991-08-08
FI84666B (en) 1991-09-13
FI900592A0 (en) 1990-02-07

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: VAISALA OY