JPS49115375A - - Google Patents

Info

Publication number
JPS49115375A
JPS49115375A JP48093388A JP9338873A JPS49115375A JP S49115375 A JPS49115375 A JP S49115375A JP 48093388 A JP48093388 A JP 48093388A JP 9338873 A JP9338873 A JP 9338873A JP S49115375 A JPS49115375 A JP S49115375A
Authority
JP
Japan
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.)
Pending
Application number
JP48093388A
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 filed Critical
Publication of JPS49115375A publication Critical patent/JPS49115375A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • 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)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
JP48093388A 1973-02-16 1973-08-22 Pending JPS49115375A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US333025A US3863147A (en) 1973-02-16 1973-02-16 Capacitance sensing apparatus

Publications (1)

Publication Number Publication Date
JPS49115375A true JPS49115375A (ja) 1974-11-05

Family

ID=23300936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP48093388A Pending JPS49115375A (ja) 1973-02-16 1973-08-22

Country Status (5)

Country Link
US (1) US3863147A (ja)
JP (1) JPS49115375A (ja)
DE (1) DE2340845A1 (ja)
FR (1) FR2218568A1 (ja)
GB (1) GB1445764A (ja)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001676A (en) * 1975-08-27 1977-01-04 General Motors Corporation Solid-state threshold detector
US4236109A (en) * 1977-12-12 1980-11-25 Lockheed Corporation Dielectric monitored composite assembly
US4389900A (en) * 1979-06-14 1983-06-28 The United States Of America As Represented By The Secretary Of The Interior Capacitance probe sensor device
FR2468108A1 (fr) * 1979-10-19 1981-04-30 Portier Raymond Jauge electronique de liquide a lecture lineaire
DE3029352C2 (de) * 1980-08-01 1982-12-23 Endress U. Hauser Gmbh U. Co, 7867 Maulburg Kapazitive Füllstandsmeßanordnung mit einer stabförmigen Sonde für die Messung des Füllstandes in einem Behälter
US4525792A (en) * 1982-03-29 1985-06-25 Smiths Industries Public Limited Company Unidirectional capacitive fluid-gauging systems
US4875497A (en) * 1984-04-23 1989-10-24 Worthington Ralph T Capacitance liquid level sensing and touch control system
US4737706A (en) * 1984-08-24 1988-04-12 Eilersen Nils Age J Capacitance measuring circuit
WO1986007155A1 (en) * 1985-05-28 1986-12-04 The Commonwealth Of Australia Care Of The Secretar Two body capacitance measurement instrument remotely connected to probe via transmission channel
US4820425A (en) * 1988-01-28 1989-04-11 Shell Oil Company Liquid sensor for robotic filtration station
DE3806899A1 (de) * 1988-03-03 1989-09-14 Schering Ag Ueberwachungssystem fuer das befuellen von behaeltern
US5927350A (en) * 1997-03-06 1999-07-27 Customized Transportation Inc. System for preventing spillage from containers during filling thereof
DE19757190A1 (de) * 1997-12-22 1999-06-24 Abb Research Ltd Kapazitiver Füllstandssensor mit integrierter Schmutzfilmdetektion
US6556417B2 (en) * 1998-03-10 2003-04-29 Mcintosh Robert B. Method to construct variable-area capacitive transducers
US6151967A (en) * 1998-03-10 2000-11-28 Horizon Technology Group Wide dynamic range capacitive transducer
WO2000043735A2 (en) * 1999-01-21 2000-07-27 Sgi International Method and apparatus for measuring fluid levels in vessels
US8602744B2 (en) * 2005-03-25 2013-12-10 Diversitech Corporation Condensate pump
US8651824B2 (en) * 2005-03-25 2014-02-18 Diversitech Corporation Condensate pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243701A (en) * 1962-01-03 1966-03-29 American Can Co Apparatus for capacitive measurement of coating thickness utilizing a square wave source and galvanometer responsive to unidirectional discharge current

Also Published As

Publication number Publication date
GB1445764A (en) 1976-08-11
US3863147A (en) 1975-01-28
FR2218568A1 (ja) 1974-09-13
DE2340845A1 (de) 1974-08-22

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