FR1596902A - - Google Patents

Info

Publication number
FR1596902A
FR1596902A FR1596902DA FR1596902A FR 1596902 A FR1596902 A FR 1596902A FR 1596902D A FR1596902D A FR 1596902DA FR 1596902 A FR1596902 A FR 1596902A
Authority
FR
France
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
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
Priority claimed from DE19671648305 external-priority patent/DE1648305A1/de
Application filed filed Critical
Application granted granted Critical
Publication of FR1596902A publication Critical patent/FR1596902A/fr
Expired 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
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Electrochemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
FR1596902D 1967-12-29 1968-12-16 Expired FR1596902A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671648305 DE1648305A1 (de) 1967-12-29 1967-12-29 Evaporimeter

Publications (1)

Publication Number Publication Date
FR1596902A true FR1596902A (fr) 1970-06-22

Family

ID=5684701

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1596902D Expired FR1596902A (fr) 1967-12-29 1968-12-16

Country Status (6)

Country Link
US (1) US3540277A (fr)
AT (1) AT289422B (fr)
CH (1) CH477679A (fr)
FR (1) FR1596902A (fr)
GB (1) GB1208060A (fr)
IL (1) IL31168A0 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603185C2 (de) * 1976-01-28 1986-05-28 Otto Mitlödi Treier Anordnung zur kapazitiven Messung des Füllstandes eines Behälters
US4115877A (en) * 1977-03-24 1978-09-26 Frederick Wall Liquid level sensing device and swimming pool water circulation systems containing the same
US4314478A (en) * 1979-11-16 1982-02-09 Robertshaw Controls Company Capacitance probe for high resistance materials
US4709585A (en) * 1986-06-13 1987-12-01 Altenhofen Jonathan M Method and apparatus for monitoring environmental evapotranspiration
GB2205405A (en) * 1987-06-01 1988-12-07 Michiel Daniel De Kock Level sensing device
FR2677451A1 (fr) * 1991-06-06 1992-12-11 Grech Jean Luc Evaporometre.
US5284052A (en) * 1992-07-01 1994-02-08 Thompson Glen F Moisture gauge
US7489144B2 (en) * 2005-02-16 2009-02-10 P.I. Engineering, Inc. Low-cost linear and liquid position transducers
US9882065B2 (en) * 2014-06-27 2018-01-30 Texas Instruments Incorporated Analog floating-gate atmometer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1625420A (en) * 1924-05-16 1927-04-19 Patterson Charley Thomas Moisture guide for incubators
US2354964A (en) * 1939-05-03 1944-08-01 Wheelco Instr Company Liquid level sensitive apparatus
US2704342A (en) * 1951-04-13 1955-03-15 Robertshaw Fulton Controls Co Fluid level actuated follow-up mechanism

Also Published As

Publication number Publication date
IL31168A0 (en) 1969-01-29
CH477679A (de) 1969-08-31
AT289422B (de) 1971-04-26
US3540277A (en) 1970-11-17
GB1208060A (en) 1970-10-07

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Legal Events

Date Code Title Description
ST Notification of lapse