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GB2180937B - Electric measuring apparatus and systems - Google Patents

Electric measuring apparatus and systems

Info

Publication number
GB2180937B
GB2180937B GB8522389A GB8522389A GB2180937B GB 2180937 B GB2180937 B GB 2180937B GB 8522389 A GB8522389 A GB 8522389A GB 8522389 A GB8522389 A GB 8522389A GB 2180937 B GB2180937 B GB 2180937B
Authority
GB
United Kingdom
Prior art keywords
systems
measuring apparatus
electric measuring
electric
measuring
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
Application number
GB8522389A
Other versions
GB8522389D0 (en
GB2180937A (en
Inventor
Thomas James Dean
Arthur John Brogdon Baty
John Peter Bell
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.)
Natural Environment Research Council
Original Assignee
Natural Environment Research Council
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 Natural Environment Research Council filed Critical Natural Environment Research Council
Priority to GB8522389A priority Critical patent/GB2180937B/en
Publication of GB8522389D0 publication Critical patent/GB8522389D0/en
Publication of GB2180937A publication Critical patent/GB2180937A/en
Application granted granted Critical
Publication of GB2180937B publication Critical patent/GB2180937B/en
Expired 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
    • G01N27/223—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
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • G01D5/2405—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by varying dielectric

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
GB8522389A 1985-09-10 1985-09-10 Electric measuring apparatus and systems Expired GB2180937B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8522389A GB2180937B (en) 1985-09-10 1985-09-10 Electric measuring apparatus and systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8522389A GB2180937B (en) 1985-09-10 1985-09-10 Electric measuring apparatus and systems

Publications (3)

Publication Number Publication Date
GB8522389D0 GB8522389D0 (en) 1985-10-16
GB2180937A GB2180937A (en) 1987-04-08
GB2180937B true GB2180937B (en) 1989-08-16

Family

ID=10584953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8522389A Expired GB2180937B (en) 1985-09-10 1985-09-10 Electric measuring apparatus and systems

Country Status (1)

Country Link
GB (1) GB2180937B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4972155A (en) * 1988-11-29 1990-11-20 Dickey-John Corporation Weight responsive moisture tester
GB2256489B (en) * 1991-05-31 1995-06-07 Natural Environment Res Electric measuring apparatus and systems
GB2369682A (en) * 2000-12-01 2002-06-05 Business Lines Ltd Moisture sensor
JP3757274B2 (en) * 2001-10-26 2006-03-22 独立行政法人産業技術総合研究所 Capacitance type position sensor and position control device having the sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075701A1 (en) * 1981-09-24 1983-04-06 Siemens Aktiengesellschaft Arrangement for the transmission of measured values to a distant location

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075701A1 (en) * 1981-09-24 1983-04-06 Siemens Aktiengesellschaft Arrangement for the transmission of measured values to a distant location

Also Published As

Publication number Publication date
GB8522389D0 (en) 1985-10-16
GB2180937A (en) 1987-04-08

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Legal Events

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

Effective date: 20020910