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AU638302B2 - Pressure absorber for hydrostatic measuring of liquid level - Google Patents

Pressure absorber for hydrostatic measuring of liquid level

Info

Publication number
AU638302B2
AU638302B2 AU68325/90A AU6832590A AU638302B2 AU 638302 B2 AU638302 B2 AU 638302B2 AU 68325/90 A AU68325/90 A AU 68325/90A AU 6832590 A AU6832590 A AU 6832590A AU 638302 B2 AU638302 B2 AU 638302B2
Authority
AU
Australia
Prior art keywords
liquid level
pressure absorber
hydrostatic measuring
hydrostatic
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.)
Ceased
Application number
AU68325/90A
Other versions
AU6832590A (en
Inventor
Ewald Boehler
Thomas Oehler
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.)
Vega Grieshaber KG
Original Assignee
Vega Grieshaber KG
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 Vega Grieshaber KG filed Critical Vega Grieshaber KG
Publication of AU6832590A publication Critical patent/AU6832590A/en
Application granted granted Critical
Publication of AU638302B2 publication Critical patent/AU638302B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
    • 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
    • G01F23/14—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 measurement of pressure
    • G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
    • G01F23/164—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid using a diaphragm, bellow as transmitting element
    • 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
    • G01F23/14—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 measurement of pressure
    • G01F23/18—Indicating, recording or alarm devices actuated electrically
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
    • H01G5/16—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of distance between electrodes
    • H01G5/18—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of distance between electrodes due to change in inclination, e.g. by flexing, by spiral wrapping

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Measuring Fluid Pressure (AREA)
AU68325/90A 1989-12-20 1990-12-20 Pressure absorber for hydrostatic measuring of liquid level Ceased AU638302B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3942047 1989-12-20
DE19893942047 DE3942047A1 (en) 1989-12-20 1989-12-20 PRESSURE GAUGE FOR HYDROSTATIC LEVEL MEASUREMENT

Publications (2)

Publication Number Publication Date
AU6832590A AU6832590A (en) 1991-09-12
AU638302B2 true AU638302B2 (en) 1993-06-24

Family

ID=6395876

Family Applications (1)

Application Number Title Priority Date Filing Date
AU68325/90A Ceased AU638302B2 (en) 1989-12-20 1990-12-20 Pressure absorber for hydrostatic measuring of liquid level

Country Status (4)

Country Link
EP (1) EP0439790A3 (en)
JP (1) JPH06323937A (en)
AU (1) AU638302B2 (en)
DE (1) DE3942047A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102967394A (en) * 2012-09-15 2013-03-13 华东光电集成器件研究所 Symmetrical capacitor pressure sensor and manufacture method thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29711478U1 (en) * 1997-07-01 1997-09-11 Fischer Gase GmbH, 74927 Eschelbronn Test device for compressed gas cylinders
CN104792363B (en) * 2015-04-13 2017-09-12 湛江市科海科技有限公司 A kind of Multifunction Sensor based on carborundum films structure and preparation method thereof
CN110296776A (en) * 2019-07-22 2019-10-01 平顶山学院 A kind of sensor and production method of high sensitivity
CN115043228B (en) * 2022-08-15 2022-11-18 山西富禄昌机械设备有限公司 Material depth feedback device for roller conveyor and using method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2936452A1 (en) * 1978-09-11 1980-03-27 Fuji Electric Co Ltd Pressure transducer for process control - has measuring diaphragm in recess on external cylinder, which has isolating disc fitted inside with metallic foil electrodes
US4829826A (en) * 1987-05-07 1989-05-16 Fischer & Porter Company Differential-pressure transducer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340800C3 (en) * 1973-08-11 1981-12-03 Vega Vertrieb und Fertigung elektronischer Geräte und Apparate Grieshaber KG, 7620 Wolfach Differential pressure measuring device
DE2827274A1 (en) * 1978-06-21 1980-01-10 Fuji Electric Co Ltd Pressure measuring device with temp. compensation - has sealing diaphragm which is more flexible than measuring diaphragm
US4458537A (en) * 1981-05-11 1984-07-10 Combustion Engineering, Inc. High accuracy differential pressure capacitive transducer
DE3684322D1 (en) * 1986-11-04 1992-04-16 Vega Grieshaber Gmbh & Co CAPACITIVE PRESSURE CONVERTER.
US4823603A (en) * 1988-05-03 1989-04-25 Vacuum General, Inc. Capacitance manometer having stress relief for fixed electrode

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2936452A1 (en) * 1978-09-11 1980-03-27 Fuji Electric Co Ltd Pressure transducer for process control - has measuring diaphragm in recess on external cylinder, which has isolating disc fitted inside with metallic foil electrodes
US4829826A (en) * 1987-05-07 1989-05-16 Fischer & Porter Company Differential-pressure transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102967394A (en) * 2012-09-15 2013-03-13 华东光电集成器件研究所 Symmetrical capacitor pressure sensor and manufacture method thereof

Also Published As

Publication number Publication date
EP0439790A3 (en) 1991-10-30
DE3942047A1 (en) 1991-07-04
EP0439790A2 (en) 1991-08-07
JPH06323937A (en) 1994-11-25
AU6832590A (en) 1991-09-12

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