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GB906609A - Improvements in or relating to photo-electric materials testing equipment - Google Patents

Improvements in or relating to photo-electric materials testing equipment

Info

Publication number
GB906609A
GB906609A GB3950359A GB3950359A GB906609A GB 906609 A GB906609 A GB 906609A GB 3950359 A GB3950359 A GB 3950359A GB 3950359 A GB3950359 A GB 3950359A GB 906609 A GB906609 A GB 906609A
Authority
GB
United Kingdom
Prior art keywords
liquid
detector
faces
contact
light guide
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
GB3950359A
Inventor
Joseph Johnston Hunter
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.)
NAT RES DEV
National Research Development Corp UK
Original Assignee
NAT RES DEV
National Research Development Corp UK
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 NAT RES DEV, National Research Development Corp UK filed Critical NAT RES DEV
Priority to GB3950359A priority Critical patent/GB906609A/en
Publication of GB906609A publication Critical patent/GB906609A/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)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

906,609. Indicating liquid levels. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 21, 1960 [Nov. 20, 1959], No. 39503/69. Class 123 (1). [Also in Groups XX and XL (b)] A liquid level indicator comprising a light guide, the operation of which involves the movement of liquid into and out of contact with a surface of said light guide, is provided with means for facilitating removal of adherent liquid from said surface on movement of said liquid out of contact with said surface. Light from a source 3, Fig. 2, undergoes a plurality of total internal reflections on the faces 7, 16, 8 before reaching a detector 6. When liquid is in contact with any of faces 7, 16, 8 which may be in separate vessels, reflection is replaced by refraction and the output of detector 6 falls. To avoid liquid sticking to the faces 7, 16, 8 they may be made as part of larger surfaces. A plurality of such detectors spaced vertically may determine the range within which the level lies or a detector may be coupled to a feed-back system to follow the liquid level. In a modification, the light guide comprises a hollow cylinder 21, Fig. 3, with a conical end 28, an inset block 24 serving both to reflect light to a phototransistor 30 and provide a continuous drain path from the surfaces 22.
GB3950359A 1959-11-20 1959-11-20 Improvements in or relating to photo-electric materials testing equipment Expired GB906609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3950359A GB906609A (en) 1959-11-20 1959-11-20 Improvements in or relating to photo-electric materials testing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3950359A GB906609A (en) 1959-11-20 1959-11-20 Improvements in or relating to photo-electric materials testing equipment

Publications (1)

Publication Number Publication Date
GB906609A true GB906609A (en) 1962-09-26

Family

ID=10409896

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3950359A Expired GB906609A (en) 1959-11-20 1959-11-20 Improvements in or relating to photo-electric materials testing equipment

Country Status (1)

Country Link
GB (1) GB906609A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192392A (en) * 1962-03-29 1965-06-29 Thermal Syndicate Ltd Photoelectric apparatus to detect liquid level
FR2201459A1 (en) * 1972-09-22 1974-04-26 Dba
JPS5099961U (en) * 1974-01-16 1975-08-19
FR2363787A1 (en) * 1976-09-02 1978-03-31 Honeywell Ltd OPTICAL PROBE TO DETECT THE LEVEL OF A LIQUID
JPS5670524U (en) * 1980-11-12 1981-06-10
US4274705A (en) * 1979-09-24 1981-06-23 The Boeing Company Fiberoptic-fed fluid level sensor using a hemiellipsoidal optical element
US4485856A (en) * 1982-03-29 1984-12-04 Fmc Corporation Apparatus for accurately filling beverage cans
GB2195765A (en) * 1986-10-03 1988-04-13 Kollmorgen Corp Optical fluid sensor
EP0367786A4 (en) * 1988-03-22 1990-10-24 Conax Buffalo Corporation Optical liquid level sensor
GB2346691A (en) * 1999-02-09 2000-08-16 Liquip Sales Pty Limited Fluid detector
EP2368712A3 (en) * 2010-03-26 2012-10-10 Brother Kogyo Kabushiki Kaisha Liquid cartridge and liquid supplying device
CN110763305A (en) * 2018-07-28 2020-02-07 华中科技大学 A photoelectric liquid level measurement method

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192392A (en) * 1962-03-29 1965-06-29 Thermal Syndicate Ltd Photoelectric apparatus to detect liquid level
FR2201459A1 (en) * 1972-09-22 1974-04-26 Dba
JPS5099961U (en) * 1974-01-16 1975-08-19
FR2363787A1 (en) * 1976-09-02 1978-03-31 Honeywell Ltd OPTICAL PROBE TO DETECT THE LEVEL OF A LIQUID
US4156149A (en) * 1976-09-02 1979-05-22 Honeywell Inc. Optical material level probe
US4274705A (en) * 1979-09-24 1981-06-23 The Boeing Company Fiberoptic-fed fluid level sensor using a hemiellipsoidal optical element
JPS5670524U (en) * 1980-11-12 1981-06-10
US4485856A (en) * 1982-03-29 1984-12-04 Fmc Corporation Apparatus for accurately filling beverage cans
GB2195765B (en) * 1986-10-03 1990-08-15 Kollmorgen Corp Fiber optic fluid sensors
US4764671A (en) * 1986-10-03 1988-08-16 Kollmorgen Corporation Fiber optic fluid sensor using coated sensor tip
GB2195765A (en) * 1986-10-03 1988-04-13 Kollmorgen Corp Optical fluid sensor
EP0367786A4 (en) * 1988-03-22 1990-10-24 Conax Buffalo Corporation Optical liquid level sensor
GB2346691A (en) * 1999-02-09 2000-08-16 Liquip Sales Pty Limited Fluid detector
GB2346691B (en) * 1999-02-09 2003-08-20 Liquip Sales Pty Ltd Fluid detector
EP2368712A3 (en) * 2010-03-26 2012-10-10 Brother Kogyo Kabushiki Kaisha Liquid cartridge and liquid supplying device
US8469500B2 (en) 2010-03-26 2013-06-25 Brother Kogyo Kabushiki Kaisha Liquid cartridge and liquid supplying device
EP2610062A1 (en) * 2010-03-26 2013-07-03 Brother Kogyo Kabushiki Kaisha Liquid cartridge and liquid supplying device
US8702214B2 (en) 2010-03-26 2014-04-22 Brother Kogyo Kabushiki Kaisha Liquid cartridge and liquid supplying device
CN110763305A (en) * 2018-07-28 2020-02-07 华中科技大学 A photoelectric liquid level measurement method
CN110763305B (en) * 2018-07-28 2021-01-05 华中科技大学 Photoelectric liquid level measuring method

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