FR2265084B1 - - Google Patents

Info

Publication number
FR2265084B1
FR2265084B1 FR7508535A FR7508535A FR2265084B1 FR 2265084 B1 FR2265084 B1 FR 2265084B1 FR 7508535 A FR7508535 A FR 7508535A FR 7508535 A FR7508535 A FR 7508535A FR 2265084 B1 FR2265084 B1 FR 2265084B1
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
FR7508535A
Other languages
French (fr)
Other versions
FR2265084A1 (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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 JP1974032513U external-priority patent/JPS5535529Y2/ja
Priority claimed from JP3251274U external-priority patent/JPS557861Y2/ja
Priority claimed from JP49057170A external-priority patent/JPS50149370A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of FR2265084A1 publication Critical patent/FR2265084A1/fr
Application granted granted Critical
Publication of FR2265084B1 publication Critical patent/FR2265084B1/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
    • G01F23/28—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)
FR7508535A 1974-03-20 1975-03-19 Expired FR2265084B1 (en)

Applications Claiming Priority (4)

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

Publications (2)

Publication Number Publication Date
FR2265084A1 FR2265084A1 (en) 1975-10-17
FR2265084B1 true FR2265084B1 (en) 1980-03-14

Family

ID=27459632

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7508535A Expired FR2265084B1 (en) 1974-03-20 1975-03-19

Country Status (4)

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

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436372A1 (en) * 1978-09-13 1980-04-11 Cit Alcatel Level monitoring device for fluid and powder hoppers - uses current drawn by ultrasonic transducers to control indicator lights
DE3215040C2 (en) * 1982-04-22 1985-11-07 VEGA Grieshaber -GmbH & Co, 7622 Schiltach Resonance rod
US4570482A (en) * 1982-04-23 1986-02-18 Murata Manufacturing Co., Ltd. Load-sensitive level detecting device
DE3312652A1 (en) * 1983-04-08 1984-10-11 Flutec Fluidtechnische Geräte GmbH, 6603 Sulzbach DEVICE FOR MEASURING THE LEVEL AND THE TEMPERATURE OF THE FILLAGE IN A CONTAINER
DE3314872A1 (en) * 1983-04-25 1984-10-25 Vdo Adolf Schindling Ag, 6000 Frankfurt DEVICE FOR DETECTING THE LEVEL AT THE SITE OF A SENSOR
US4628951A (en) * 1984-01-03 1986-12-16 Chemical Data Systems, Inc. Liquid level detection system for high temperature or pressure environments
DE3543528A1 (en) * 1985-12-10 1987-06-11 Vdo Schindling DEVICE FOR DETECTING THE LEVEL IN A CONTAINER
US4740726A (en) * 1986-07-21 1988-04-26 Nohken Inc. Vibrator-type level sensor
DE3640444C2 (en) * 1986-11-27 1996-11-07 Vdo Schindling Device for detecting the level in a container
DE3640443C2 (en) * 1986-11-27 1995-06-01 Vdo Schindling Device for detecting the level in a container
DE3810670C2 (en) * 1988-03-29 1998-11-26 Siemens Ag Device for level monitoring
DE4316148A1 (en) * 1993-05-15 1994-11-17 Hahn Schickard Ges Sensor for measuring the filling level of fluids
GB9700585D0 (en) * 1997-01-14 1997-03-05 Smiths Industries Ltd Fluid detector
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
DE59814061D1 (en) * 1998-09-09 2007-08-30 Endress & Hauser Gmbh & Co Kg Device for detecting and / or monitoring a predetermined 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 (en) * 2001-06-27 2003-01-09 Endress & Hauser Gmbh & Co Kg Device for determining and / or monitoring the fill level of a medium in a container
DE10138360A1 (en) * 2001-08-04 2003-02-27 Daimler Chrysler Ag Fuel tank filling level measuring system uses mechanical resonator elements provided by part of outside wall of housing immersed in liquid in tank
DE102010038535A1 (en) * 2010-07-28 2012-02-02 Endress + Hauser Gmbh + Co. Kg Device for determining and / or monitoring a predetermined fill level
DE102011090014A1 (en) * 2011-12-28 2013-07-04 Endress + Hauser Gmbh + Co. Kg Device for determining and / or monitoring at least one process variable
DE102019210901A1 (en) * 2019-07-23 2021-01-28 Robert Bosch Gmbh Sensor device and tank device for motor vehicles

Also Published As

Publication number Publication date
FR2265084A1 (en) 1975-10-17
DE2512060B2 (en) 1978-06-15
DE2512060A1 (en) 1975-12-04
GB1512233A (en) 1978-05-24
IT1032358B (en) 1979-05-30

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Legal Events

Date Code Title Description
ST Notification of lapse