IT1032358B - Rivelatore di pressione piezoelettrico per rivelare il livello di un liquido in un contenitore - Google Patents

Rivelatore di pressione piezoelettrico per rivelare il livello di un liquido in un contenitore

Info

Publication number
IT1032358B
IT1032358B IT4867275A IT4867275A IT1032358B IT 1032358 B IT1032358 B IT 1032358B IT 4867275 A IT4867275 A IT 4867275A IT 4867275 A IT4867275 A IT 4867275A IT 1032358 B IT1032358 B IT 1032358B
Authority
IT
Italy
Prior art keywords
container
detect
liquid
level
pressure detector
Prior art date
Application number
IT4867275A
Other languages
English (en)
Original Assignee
Matsushita Electric Ind Co Ltd
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 JP3251174U external-priority patent/JPS50122259U/ja
Priority claimed from JP3251274U external-priority patent/JPS557861Y2/ja
Priority claimed from JP1974032513U external-priority patent/JPS5535529Y2/ja
Priority claimed from JP49057170A external-priority patent/JPS50149370A/ja
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Application granted granted Critical
Publication of IT1032358B publication Critical patent/IT1032358B/it

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
    • G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
    • G01F23/2967—Acoustic waves making use of acoustical resonance or standing waves for discrete levels
    • 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
    • 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
    • G01L9/08—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 by making use of piezoelectric devices, i.e. electric circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Measuring Fluid Pressure (AREA)
IT4867275A 1974-03-20 1975-03-18 Rivelatore di pressione piezoelettrico per rivelare il livello di un liquido in un contenitore IT1032358B (it)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3251174U JPS50122259U (it) 1974-03-20 1974-03-20
JP3251274U JPS557861Y2 (it) 1974-03-20 1974-03-20
JP1974032513U JPS5535529Y2 (it) 1974-03-20 1974-03-20
JP49057170A JPS50149370A (it) 1974-05-20 1974-05-20

Publications (1)

Publication Number Publication Date
IT1032358B true IT1032358B (it) 1979-05-30

Family

ID=27459632

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4867275A IT1032358B (it) 1974-03-20 1975-03-18 Rivelatore di pressione piezoelettrico per rivelare il livello di un liquido in un contenitore

Country Status (4)

Country Link
DE (1) DE2512060B2 (it)
FR (1) FR2265084B1 (it)
GB (1) GB1512233A (it)
IT (1) IT1032358B (it)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436372A1 (fr) * 1978-09-13 1980-04-11 Cit Alcatel Dispositif de controle du niveau d'un materiau fluide contenu dans un reservoir vertical
DE3215040C2 (de) * 1982-04-22 1985-11-07 VEGA Grieshaber -GmbH & Co, 7622 Schiltach Resonanzstab
US4570482A (en) * 1982-04-23 1986-02-18 Murata Manufacturing Co., Ltd. Load-sensitive level detecting device
DE3312652A1 (de) * 1983-04-08 1984-10-11 Flutec Fluidtechnische Geräte GmbH, 6603 Sulzbach Vorrichtung zum messen des fuellstandes und der temperatur des fuellgutes in einem behaelter
DE3314872A1 (de) * 1983-04-25 1984-10-25 Vdo Adolf Schindling Ag, 6000 Frankfurt Einrichtung zur meldung des fuellstandes an dem ort eines sensors
US4628951A (en) * 1984-01-03 1986-12-16 Chemical Data Systems, Inc. Liquid level detection system for high temperature or pressure environments
DE3543528A1 (de) * 1985-12-10 1987-06-11 Vdo Schindling Einrichtung zur erfassung des fuellstandes in einem behaelter
US4740726A (en) * 1986-07-21 1988-04-26 Nohken Inc. Vibrator-type level sensor
DE3640444C2 (de) * 1986-11-27 1996-11-07 Vdo Schindling Einrichtung zur Erfassung des Füllstandes in einem Behälter
DE3640443C2 (de) * 1986-11-27 1995-06-01 Vdo Schindling Einrichtung zur Erfassung des Füllstandes in einem Behälter
DE3810670C2 (de) * 1988-03-29 1998-11-26 Siemens Ag Vorrichtung zur Pegelstandsüberwachung
DE4316148A1 (de) * 1993-05-15 1994-11-17 Hahn Schickard Ges Sensor für die Füllstandsmessung von Fluiden
GB9700585D0 (en) * 1997-01-14 1997-03-05 Smiths Industries Ltd Fluid detector
EP0985916B1 (de) * 1998-09-09 2007-07-18 Endress + Hauser GmbH + Co. KG Vorrichtung zur Feststellung und/oder Überwachung eines vorbestimmten Füllstandes in einem Behälter
US6236322B1 (en) 1998-09-09 2001-05-22 Endress + Hauser Gmbh + Co. Apparatus for establishing and/or monitoring a predetermined filling level in a container
US6539806B2 (en) * 2001-03-07 2003-04-01 Starr-Johnson Fluid-load measurement by magnetic excitation and vibration sensing of a fluid-load-sensitive diaphragm
DE10131081A1 (de) * 2001-06-27 2003-01-09 Endress & Hauser Gmbh & Co Kg Vorrichtung zur Bestimmung und/oder Überwachung des Füllstandes eines Mediums in einem Behälter
DE10138360A1 (de) * 2001-08-04 2003-02-27 Daimler Chrysler Ag Füllstandsmesssystem
DE102010038535A1 (de) 2010-07-28 2012-02-02 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Bestimmung und/oder Überwachung eines vorgegebenen Füllstands
DE102011090014A1 (de) * 2011-12-28 2013-07-04 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Bestimmung und/oder Überwachung mindestens einer Prozessgröße
DE102019210901A1 (de) * 2019-07-23 2021-01-28 Robert Bosch Gmbh Sensorvorrichtung und Tankvorrichtung für Kraftfahrzeuge

Also Published As

Publication number Publication date
DE2512060A1 (de) 1975-12-04
DE2512060B2 (de) 1978-06-15
FR2265084B1 (it) 1980-03-14
FR2265084A1 (it) 1975-10-17
GB1512233A (en) 1978-05-24

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