ZA796686B - Level measurement device - Google Patents

Level measurement device

Info

Publication number
ZA796686B
ZA796686B ZA00796686A ZA796686A ZA796686B ZA 796686 B ZA796686 B ZA 796686B ZA 00796686 A ZA00796686 A ZA 00796686A ZA 796686 A ZA796686 A ZA 796686A ZA 796686 B ZA796686 B ZA 796686B
Authority
ZA
South Africa
Prior art keywords
rays
level
responsive
light source
regulating means
Prior art date
Application number
ZA00796686A
Other languages
English (en)
Inventor
F Vedova
Original Assignee
Ceda Spa
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 Ceda Spa filed Critical Ceda Spa
Publication of ZA796686B publication Critical patent/ZA796686B/xx

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
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2928—Light, e.g. infrared or ultraviolet for discrete levels using light reflected on the material surface

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Paper (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Continuous Casting (AREA)
  • Length Measuring Devices By Optical Means (AREA)
ZA00796686A 1978-12-20 1979-12-10 Level measurement device ZA796686B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT83526/78A IT1192344B (it) 1978-12-20 1978-12-20 Misuratore di livello

Publications (1)

Publication Number Publication Date
ZA796686B true ZA796686B (en) 1980-11-26

Family

ID=11322828

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00796686A ZA796686B (en) 1978-12-20 1979-12-10 Level measurement device

Country Status (8)

Country Link
US (1) US4365165A (xx)
EP (1) EP0014301B1 (xx)
JP (1) JPS55109925A (xx)
AT (1) ATE7078T1 (xx)
DE (1) DE2966898D1 (xx)
ES (1) ES487026A1 (xx)
IT (1) IT1192344B (xx)
ZA (1) ZA796686B (xx)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2931199A1 (de) * 1979-08-01 1981-02-19 Endress Hauser Gmbh Co Anordnung zur messung des badspiegels in einer giessanlage, insbesondere in der kokille einer stranggiessanlage
FR2482290A1 (fr) * 1980-05-09 1981-11-13 Poncet Pierre Perfectionnements a la detection photoelectrique du niveau du bain dans les lingotieres de coulee continue
DE3372128D1 (en) * 1982-03-04 1987-07-23 Kent Scient Ind Projects Fluid level sensing apparatus
GB8305531D0 (en) * 1983-02-28 1983-03-30 Shell Int Research Optical tank gauging
FR2553190B1 (fr) * 1983-10-05 1988-06-17 Fraunhofer Ges Forschung Procede et dispositif pour mesurer un niveau de remplissage
DE3621009A1 (de) * 1986-06-23 1988-01-07 Truetzschler & Co Vorrichtung zur erfassung des fuellstandes in einem fasermaterialspeicher, insbesondere fuer spinnereivorbereitungsmaschinen
US5087635A (en) * 1986-07-02 1992-02-11 Rohm And Haas Company Alpha-aryl-alpha-phenylethyl-1H-1,2,4-triazole-1-propanenitriles
DE3828821A1 (de) * 1988-08-25 1990-03-01 Bayer Ag Verfahren zur erkennung der ueberflutung einer oberflaeche
CA1337955C (en) * 1988-09-26 1996-01-23 Thomas A. Almquist Recoating of stereolithographic layers
US4873863A (en) * 1988-11-29 1989-10-17 Bruhl J D Volumetric leak detection means and method
ES2077507B1 (es) * 1993-10-04 1996-07-01 Elapsa Sl Sistema medidor de distancia con tecnologia laser para determinacion de niveles.
DE4342272B4 (de) * 1993-12-10 2004-01-29 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Meßanordnung zum Bestimmen des Niveaus, der Trübung und des Schaumanteils der Lauge in einer automatisch steuerbaren Wasch- oder Geschirrspülmaschine
US5831268A (en) * 1996-11-25 1998-11-03 Morita; Yoshimitsu Sensing device for reflective clear material using infrared LED
US6259211B1 (en) * 1998-08-05 2001-07-10 Mars Incorporated Vending machine fluorescent tube monitor
EP1097765A4 (en) * 1999-04-28 2005-02-09 Sumitomo Metal Ind CONTROL OF THE MELTING LEVEL IN CONTINUOUS CASTING
DE19941430A1 (de) 1999-08-30 2001-03-01 Mueller Weingarten Maschf Verfahren zur Regelung der Metalldosiermenge
US6617601B1 (en) * 2000-03-10 2003-09-09 Lmi Technologies Inc. Molten metal pouring control system and method
JP4409979B2 (ja) 2004-02-10 2010-02-03 シチズンホールディングス株式会社 振動子
DE602005020725D1 (de) 2004-09-24 2010-06-02 Seiko Epson Corp Piezoelektrisches Resonatorelement und piezoelektrisches Bauelement
CN101920334A (zh) * 2010-08-25 2010-12-22 中南大学 一种采用红外线传感器检测铸模中熔体液位的方法
CN112666127A (zh) * 2020-12-29 2021-04-16 湖南金泰环保科技有限公司 一种快速判断样品浓缩终点的方法及平行浓缩仪
CN113175972A (zh) * 2021-04-09 2021-07-27 湖南考思特电子有限公司 一种液/料位指示、警示灯的控制***

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741656A (en) * 1971-05-27 1973-06-26 Bendix Corp Fill level measuring device
US3838727A (en) * 1973-07-16 1974-10-01 I Levi Normalized optical input level control in continuous casting process and apparatus
US3867628A (en) * 1973-07-30 1975-02-18 Scientific Technology Pulsed light receiver and method

Also Published As

Publication number Publication date
ES487026A1 (es) 1980-08-01
JPS55109925A (en) 1980-08-23
ATE7078T1 (de) 1984-04-15
US4365165A (en) 1982-12-21
IT7883526A0 (it) 1978-12-20
EP0014301A1 (en) 1980-08-20
EP0014301B1 (en) 1984-04-11
IT1192344B (it) 1988-03-31
DE2966898D1 (en) 1984-05-17

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