JPH0514209B2 - - Google Patents

Info

Publication number
JPH0514209B2
JPH0514209B2 JP1500159A JP50015988A JPH0514209B2 JP H0514209 B2 JPH0514209 B2 JP H0514209B2 JP 1500159 A JP1500159 A JP 1500159A JP 50015988 A JP50015988 A JP 50015988A JP H0514209 B2 JPH0514209 B2 JP H0514209B2
Authority
JP
Japan
Prior art keywords
interface
optical path
liquid level
liquid
sensor
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.)
Expired - Lifetime
Application number
JP1500159A
Other languages
English (en)
Japanese (ja)
Other versions
JPH02502041A (ja
Inventor
Uorutaa Jei Junia Uiigando
Robaato Eichi Burisu
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.)
RTX Corp
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Publication of JPH02502041A publication Critical patent/JPH02502041A/ja
Publication of JPH0514209B2 publication Critical patent/JPH0514209B2/ja
Granted 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
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2922—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms

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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
JP1500159A 1987-11-02 1988-10-26 光式液面センサ Granted JPH02502041A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US115,304 1987-11-02
US07/115,304 US4878383A (en) 1987-11-02 1987-11-02 Optical fluid level sensor

Publications (2)

Publication Number Publication Date
JPH02502041A JPH02502041A (ja) 1990-07-05
JPH0514209B2 true JPH0514209B2 (en, 2012) 1993-02-24

Family

ID=22360503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1500159A Granted JPH02502041A (ja) 1987-11-02 1988-10-26 光式液面センサ

Country Status (5)

Country Link
US (1) US4878383A (en, 2012)
EP (1) EP0355134B1 (en, 2012)
JP (1) JPH02502041A (en, 2012)
DE (1) DE3887139T2 (en, 2012)
WO (1) WO1989004465A1 (en, 2012)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8729038D0 (en) * 1987-12-11 1988-01-27 Honeywell Control Syst Liquid level sensor
US4994682A (en) * 1989-05-19 1991-02-19 Focal Technologies Incorporated Fiber optic continuous liquid level sensor
US5750881A (en) * 1995-07-13 1998-05-12 Chiron Diagnostics Corporation Method and apparatus for aspirating and dispensing sample fluids
US6158269A (en) * 1995-07-13 2000-12-12 Bayer Corporation Method and apparatus for aspirating and dispensing sample fluids
US5641006A (en) * 1995-07-13 1997-06-24 Chiron Diagnostics Corporation Liquid supply apparatus and method of operation
GB9608752D0 (en) * 1996-04-26 1996-07-03 Amp Great Britain Liquid sensor
US6578418B2 (en) * 1997-11-24 2003-06-17 Robert J. Dillon Sight glass
US6429447B1 (en) 1999-06-09 2002-08-06 Illinois Tool Works Inc. Fluid level indicator
JP4576871B2 (ja) * 2004-04-21 2010-11-10 セイコーエプソン株式会社 収容物検出装置、容器、及びインクジェットプリンタ
IL187597A0 (en) 2007-11-22 2008-03-20 Dekel Tzidon Fluid level indicator
DE102017214006A1 (de) * 2017-08-10 2019-02-14 BSH Hausgeräte GmbH Heißgetränkezubereitungsvorrichtung
GB201912707D0 (en) * 2019-09-04 2019-10-16 Johnson Matthey Plc Level measurement instrument

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240988A (en) * 1938-09-20 1941-05-06 Univ Tennessce Res Corp Liquid level indicator
US2943530A (en) * 1956-10-26 1960-07-05 Elastic Stop Nut Corp Optical indicator for liquid level
GB934322A (en) * 1962-03-29 1963-08-14 Thermal Syndicate Ltd Apparatus to detect liquid level
US3543581A (en) * 1969-02-06 1970-12-01 Illinois Tool Works Liquid level indicator
SU735926A1 (ru) * 1977-06-24 1980-05-25 Ордена Трудового Красного Знамени Институт Радиотехники И Электроники Ан Ссср Индикатор уровн жидкости
US4353252A (en) * 1980-10-23 1982-10-12 Cadbury Schweppes Plc Liquid level sensor
WO1986007446A1 (en) * 1985-06-07 1986-12-18 Benno Perren Optical liquid detector
DE3614130A1 (de) * 1986-04-25 1987-10-29 Spinner Gmbh Elektrotech Fluessigkeitspegelfuehler
DE8707092U1 (de) * 1987-05-16 1987-10-22 Timm-Elektronik GmbH, 21509 Glinde Vorrichtung zur Erfassung eines Flüssigkeitsfüllstandes

Also Published As

Publication number Publication date
WO1989004465A1 (en) 1989-05-18
DE3887139T2 (de) 1994-05-05
DE3887139D1 (de) 1994-02-24
EP0355134A4 (en) 1990-03-21
EP0355134B1 (en) 1994-01-12
JPH02502041A (ja) 1990-07-05
US4878383A (en) 1989-11-07
EP0355134A1 (en) 1990-02-28

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