GB9101869D0 - Measurement coupling for low capacitances - Google Patents

Measurement coupling for low capacitances

Info

Publication number
GB9101869D0
GB9101869D0 GB919101869A GB9101869A GB9101869D0 GB 9101869 D0 GB9101869 D0 GB 9101869D0 GB 919101869 A GB919101869 A GB 919101869A GB 9101869 A GB9101869 A GB 9101869A GB 9101869 D0 GB9101869 D0 GB 9101869D0
Authority
GB
United Kingdom
Prior art keywords
measurement coupling
low capacitances
capacitances
low
coupling
Prior art date
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.)
Withdrawn
Application number
GB919101869A
Other versions
GB2242279A (en
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.)
Filing date
Publication date
Application filed by Vaisala Oy filed Critical Vaisala Oy
Publication of GB9101869D0 publication Critical patent/GB9101869D0/en
Publication of GB2242279A publication Critical patent/GB2242279A/en
Withdrawn legal-status Critical Current

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
GB9101869A 1990-02-07 1991-01-29 Measuring low capacitances Withdrawn GB2242279A (en)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 (2)

Publication Number Publication Date
GB9101869D0 true GB9101869D0 (en) 1991-03-13
GB2242279A GB2242279A (en) 1991-09-25

Family

ID=8529843

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9101869A Withdrawn GB2242279A (en) 1990-02-07 1991-01-29 Measuring low capacitances

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
ITMI910300A1 (en) 1992-08-06
FI900592A0 (en) 1990-02-07
FR2657963A1 (en) 1991-08-09
GB2242279A (en) 1991-09-25
IT1245137B (en) 1994-09-13
CA2035909A1 (en) 1991-08-08
ITMI910300A0 (en) 1991-02-06
DE4103433A1 (en) 1991-08-08
BR9100486A (en) 1991-10-29
FI84666B (en) 1991-09-13
FI84666C (en) 1991-12-27
ZA91506B (en) 1991-10-30
FI900592A (en) 1991-08-08
AU6949191A (en) 1991-08-08

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)