DE29505689U1 - Kapazitiver Meßwertaufnehmer nach dem Streufeldprinzip - Google Patents

Kapazitiver Meßwertaufnehmer nach dem Streufeldprinzip

Info

Publication number
DE29505689U1
DE29505689U1 DE29505689U DE29505689U DE29505689U1 DE 29505689 U1 DE29505689 U1 DE 29505689U1 DE 29505689 U DE29505689 U DE 29505689U DE 29505689 U DE29505689 U DE 29505689U DE 29505689 U1 DE29505689 U1 DE 29505689U1
Authority
DE
Germany
Prior art keywords
capacitive sensor
sensor based
stray field
field principle
principle
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 - Lifetime
Application number
DE29505689U
Other languages
English (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.)
SCHALLER-AUTOMATION INDUSTRIELLE AUTOMATIONSTE, DE
Original Assignee
SEC STEDHAM ELECTRONICS CORP
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 SEC STEDHAM ELECTRONICS CORP filed Critical SEC STEDHAM ELECTRONICS CORP
Priority to DE29505689U priority Critical patent/DE29505689U1/de
Publication of DE29505689U1 publication Critical patent/DE29505689U1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01R27/2617—Measuring dielectric properties, e.g. constants
    • G01R27/2635—Sample holders, electrodes or excitation arrangements, e.g. sensors or measuring cells
    • G01R27/2676—Probes
    • 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
    • G01N27/226—Construction of measuring vessels; Electrodes therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (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)
DE29505689U 1995-04-01 1995-04-01 Kapazitiver Meßwertaufnehmer nach dem Streufeldprinzip Expired - Lifetime DE29505689U1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29505689U DE29505689U1 (de) 1995-04-01 1995-04-01 Kapazitiver Meßwertaufnehmer nach dem Streufeldprinzip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29505689U DE29505689U1 (de) 1995-04-01 1995-04-01 Kapazitiver Meßwertaufnehmer nach dem Streufeldprinzip

Publications (1)

Publication Number Publication Date
DE29505689U1 true DE29505689U1 (de) 1995-08-10

Family

ID=8006339

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29505689U Expired - Lifetime DE29505689U1 (de) 1995-04-01 1995-04-01 Kapazitiver Meßwertaufnehmer nach dem Streufeldprinzip

Country Status (1)

Country Link
DE (1) DE29505689U1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19713267A1 (de) * 1997-01-28 1998-07-30 Abb Research Ltd Verfahren zur Bestimmung der Dielektrizitätskonstante und/oder der Leitfähigkeit mindestens eines Mediums sowie Vorrichtung zur Durchführung des Verfahrens
DE19757190A1 (de) * 1997-12-22 1999-06-24 Abb Research Ltd Kapazitiver Füllstandssensor mit integrierter Schmutzfilmdetektion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19713267A1 (de) * 1997-01-28 1998-07-30 Abb Research Ltd Verfahren zur Bestimmung der Dielektrizitätskonstante und/oder der Leitfähigkeit mindestens eines Mediums sowie Vorrichtung zur Durchführung des Verfahrens
DE19757190A1 (de) * 1997-12-22 1999-06-24 Abb Research Ltd Kapazitiver Füllstandssensor mit integrierter Schmutzfilmdetektion
US6073488A (en) * 1997-12-22 2000-06-13 Abb Research Ltd. Capacitive liquid level sensor with integrated pollutant film detection

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 19950921

R150 Term of protection extended to 6 years

Effective date: 19980714

R151 Term of protection extended to 8 years

Effective date: 20010801

R081 Change of applicant/patentee

Owner name: SCHALLER-AUTOMATION INDUSTRIELLE AUTOMATIONSTE, DE

Free format text: FORMER OWNER: SEC STEDHAM ELECTRONICS CORP., RENO, US

Effective date: 20011112

R152 Term of protection extended to 10 years

Effective date: 20030522

R071 Expiry of right