GB2284676B - A method and apparatus for measuring the impedance of a lossy capacitor - Google Patents

A method and apparatus for measuring the impedance of a lossy capacitor

Info

Publication number
GB2284676B
GB2284676B GB9424803A GB9424803A GB2284676B GB 2284676 B GB2284676 B GB 2284676B GB 9424803 A GB9424803 A GB 9424803A GB 9424803 A GB9424803 A GB 9424803A GB 2284676 B GB2284676 B GB 2284676B
Authority
GB
United Kingdom
Prior art keywords
impedance
measuring
lossy capacitor
lossy
capacitor
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.)
Expired - Fee Related
Application number
GB9424803A
Other versions
GB9424803D0 (en
GB2284676A (en
Inventor
Malcolm Byars
Maurice Sidney Beck
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.)
PROCESS TOMOGRAPHY Ltd
Original Assignee
PROCESS TOMOGRAPHY Ltd
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 PROCESS TOMOGRAPHY Ltd filed Critical PROCESS TOMOGRAPHY Ltd
Publication of GB9424803D0 publication Critical patent/GB9424803D0/en
Publication of GB2284676A publication Critical patent/GB2284676A/en
Application granted granted Critical
Publication of GB2284676B publication Critical patent/GB2284676B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/24—Investigating the presence of flaws
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
GB9424803A 1993-12-08 1994-12-08 A method and apparatus for measuring the impedance of a lossy capacitor Expired - Fee Related GB2284676B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939325125A GB9325125D0 (en) 1993-12-08 1993-12-08 Measurement of the impedance of a lossy capacitor

Publications (3)

Publication Number Publication Date
GB9424803D0 GB9424803D0 (en) 1995-02-08
GB2284676A GB2284676A (en) 1995-06-14
GB2284676B true GB2284676B (en) 1998-03-25

Family

ID=10746294

Family Applications (2)

Application Number Title Priority Date Filing Date
GB939325125A Pending GB9325125D0 (en) 1993-12-08 1993-12-08 Measurement of the impedance of a lossy capacitor
GB9424803A Expired - Fee Related GB2284676B (en) 1993-12-08 1994-12-08 A method and apparatus for measuring the impedance of a lossy capacitor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB939325125A Pending GB9325125D0 (en) 1993-12-08 1993-12-08 Measurement of the impedance of a lossy capacitor

Country Status (1)

Country Link
GB (2) GB9325125D0 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2359138B (en) * 2000-02-12 2004-06-16 Stuart Ian Jackman Method and apparatus for monitoring adsorbed water
EP1411350B1 (en) 2002-10-18 2006-05-03 Siemens Schweiz AG method for measuring air humidity with capacitive humidity sensor
DE50205363D1 (en) 2002-10-18 2006-01-26 Siemens Schweiz Ag Zuerich Humidity sensor with capacitive humidity measuring element and method for detecting the humidity
CN100412534C (en) * 2005-08-25 2008-08-20 中国科学院工程热物理研究所 Micro capacitive chromatographic imaging sensor
EP2031381A1 (en) * 2007-08-31 2009-03-04 Tomoflow Ltd. Method and apparatus for determining moisture or density of a material
CN105510723B (en) * 2016-01-28 2018-06-22 武汉理工大学 The capacity and internal resistance measurement device and its measuring method of a kind of bulky capacitor
CN110470706B (en) * 2019-09-24 2024-02-20 青岛理工大学 ECT sensor for monitoring water transmission in concrete member

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1222963A (en) * 1967-03-17 1971-02-17 Evershed Vignoles Ltd Improvements relating to insulation testing
EP0288215A2 (en) * 1987-04-24 1988-10-26 Simmonds Precision Products Inc. Determination of electrical capacitance and resistance
EP0438103A2 (en) * 1990-01-15 1991-07-24 Dieter Dr. Weiss Process and appliance for measuring physical sizes
WO1992021983A1 (en) * 1991-05-28 1992-12-10 Axiomatics Corporation Apparatus and methods for measuring the dielectric and geometric properties of materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1222963A (en) * 1967-03-17 1971-02-17 Evershed Vignoles Ltd Improvements relating to insulation testing
EP0288215A2 (en) * 1987-04-24 1988-10-26 Simmonds Precision Products Inc. Determination of electrical capacitance and resistance
EP0438103A2 (en) * 1990-01-15 1991-07-24 Dieter Dr. Weiss Process and appliance for measuring physical sizes
WO1992021983A1 (en) * 1991-05-28 1992-12-10 Axiomatics Corporation Apparatus and methods for measuring the dielectric and geometric properties of materials

Also Published As

Publication number Publication date
GB9424803D0 (en) 1995-02-08
GB2284676A (en) 1995-06-14
GB9325125D0 (en) 1994-02-09

Similar Documents

Publication Publication Date Title
EP0703753A4 (en) Intra-abdominal pressure measurement apparatus and method
AU7374991A (en) Distance measuring method and apparatus therefor
EP0533590A3 (en) Distance measuring method and apparatus
EP0500234A3 (en) Method for making diaphragm-based sensors and apparatus constructed therewith
EP0689030A3 (en) Displacement measuring method and apparatus
EP0526277A3 (en) Method and apparatus for determining the orientation of a document
EP0449582A3 (en) Measuring method and apparatus
AU1400595A (en) Formation density measurement apparatus and method
EP0450809A3 (en) Method and apparatus for measuring the frequency of a spectral line
AU3826489A (en) Method of measuring a profile of an object and an apparatus for carrying out the method
EP0565348A3 (en) Electronic measuring apparatus
GB9303887D0 (en) An apparatus and a method for automatically measuring the density of an object
GB9120029D0 (en) Measuring apparatus and method
GB2284676B (en) A method and apparatus for measuring the impedance of a lossy capacitor
AU8260591A (en) Measurement method and apparatus for hydrocyclones
GB2269078B (en) Frequency translation apparatus and method
EP0618461A3 (en) Distance measuring method and apparatus
EP0562521A3 (en) Frequency deviation measuring apparatus
GB2249842B (en) Method and apparatus for measuring a settling characteristic
HK1011405A1 (en) Method for the measurement of lengths and angles and an equipment therefor
EP0486050A3 (en) Method and apparatus for measuring displacement
GB9223659D0 (en) Method and apparatus for measuring surface pressure
GB9311492D0 (en) Method and apparatus for measuring
GB2243679B (en) Measuring apparatus and method
AU6505790A (en) Method and apparatus for frequency measurement

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20101208