ITMI910300A1 - COUPLING FOR LOW CAPACITY MEASUREMENT - Google Patents

COUPLING FOR LOW CAPACITY MEASUREMENT

Info

Publication number
ITMI910300A1
ITMI910300A1 IT000300A ITMI910300A ITMI910300A1 IT MI910300 A1 ITMI910300 A1 IT MI910300A1 IT 000300 A IT000300 A IT 000300A IT MI910300 A ITMI910300 A IT MI910300A IT MI910300 A1 ITMI910300 A1 IT MI910300A1
Authority
IT
Italy
Prior art keywords
coupling
low capacity
capacity measurement
measurement
low
Prior art date
Application number
IT000300A
Other languages
Italian (it)
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 ITMI910300A0 publication Critical patent/ITMI910300A0/en
Publication of ITMI910300A1 publication Critical patent/ITMI910300A1/en
Application granted granted Critical
Publication of IT1245137B publication Critical patent/IT1245137B/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)
ITMI910300A 1990-02-07 1991-02-06 COUPLING FOR LOW CAPACITY MEASUREMENT IT1245137B (en)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
ITMI910300A0 ITMI910300A0 (en) 1991-02-06
ITMI910300A1 true ITMI910300A1 (en) 1992-08-06
IT1245137B IT1245137B (en) 1994-09-13

Family

ID=8529843

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI910300A IT1245137B (en) 1990-02-07 1991-02-06 COUPLING FOR LOW CAPACITY MEASUREMENT

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
FI900592A0 (en) 1990-02-07
IT1245137B (en) 1994-09-13
ZA91506B (en) 1991-10-30
FR2657963A1 (en) 1991-08-09
AU6949191A (en) 1991-08-08
BR9100486A (en) 1991-10-29
FI84666C (en) 1991-12-27
FI900592A (en) 1991-08-08
CA2035909A1 (en) 1991-08-08
GB9101869D0 (en) 1991-03-13
FI84666B (en) 1991-09-13
ITMI910300A0 (en) 1991-02-06
DE4103433A1 (en) 1991-08-08
GB2242279A (en) 1991-09-25

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970226