GB1553642A - Liquid level detector for detecting a liquid level when reaching a prescribed height - Google Patents

Liquid level detector for detecting a liquid level when reaching a prescribed height

Info

Publication number
GB1553642A
GB1553642A GB1702577A GB1702577A GB1553642A GB 1553642 A GB1553642 A GB 1553642A GB 1702577 A GB1702577 A GB 1702577A GB 1702577 A GB1702577 A GB 1702577A GB 1553642 A GB1553642 A GB 1553642A
Authority
GB
United Kingdom
Prior art keywords
liquid level
reaching
detecting
prescribed height
level detector
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
Application number
GB1702577A
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric 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
Application filed by Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to GB1702577A priority Critical patent/GB1553642A/en
Publication of GB1553642A publication Critical patent/GB1553642A/en
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
    • G01F23/284—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
    • G01F23/2925—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
GB1702577A 1977-04-25 1977-04-25 Liquid level detector for detecting a liquid level when reaching a prescribed height Expired GB1553642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1702577A GB1553642A (en) 1977-04-25 1977-04-25 Liquid level detector for detecting a liquid level when reaching a prescribed height

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1702577A GB1553642A (en) 1977-04-25 1977-04-25 Liquid level detector for detecting a liquid level when reaching a prescribed height

Publications (1)

Publication Number Publication Date
GB1553642A true GB1553642A (en) 1979-09-26

Family

ID=10087862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1702577A Expired GB1553642A (en) 1977-04-25 1977-04-25 Liquid level detector for detecting a liquid level when reaching a prescribed height

Country Status (1)

Country Link
GB (1) GB1553642A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0228217A1 (en) * 1985-12-18 1987-07-08 LUCAS INDUSTRIES public limited company Liquid level detection
US5103648A (en) * 1990-05-29 1992-04-14 Ac&R Components, Inc. Oil level control system
DE4318030B4 (en) * 1992-08-03 2006-03-09 Casco Products Corp., Bridgeport Liquid level monitoring device
EP1846133A2 (en) * 2005-02-04 2007-10-24 Davco Technology, L.L.C. Apparatus and method for determining a fluid level within an enclosed container
EP2228633A1 (en) 2009-03-10 2010-09-15 Nestec S.A. Optical level detector for a beverage machine
CN112082624A (en) * 2020-09-08 2020-12-15 南方科技大学 Liquid level detection device and detection method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0228217A1 (en) * 1985-12-18 1987-07-08 LUCAS INDUSTRIES public limited company Liquid level detection
US5103648A (en) * 1990-05-29 1992-04-14 Ac&R Components, Inc. Oil level control system
DE4318030B4 (en) * 1992-08-03 2006-03-09 Casco Products Corp., Bridgeport Liquid level monitoring device
EP1846133A2 (en) * 2005-02-04 2007-10-24 Davco Technology, L.L.C. Apparatus and method for determining a fluid level within an enclosed container
EP1846133A4 (en) * 2005-02-04 2010-08-18 Davco Technology L L C Apparatus and method for determining a fluid level within an enclosed container
EP2228633A1 (en) 2009-03-10 2010-09-15 Nestec S.A. Optical level detector for a beverage machine
US8338811B2 (en) 2009-03-10 2012-12-25 Nestec S.A. Optical level detector for a beverage machine
CN112082624A (en) * 2020-09-08 2020-12-15 南方科技大学 Liquid level detection device and detection method thereof

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950425