GB2035561B - Photoelectric level switch - Google Patents

Photoelectric level switch

Info

Publication number
GB2035561B
GB2035561B GB7936260A GB7936260A GB2035561B GB 2035561 B GB2035561 B GB 2035561B GB 7936260 A GB7936260 A GB 7936260A GB 7936260 A GB7936260 A GB 7936260A GB 2035561 B GB2035561 B GB 2035561B
Authority
GB
United Kingdom
Prior art keywords
level switch
photoelectric level
photoelectric
switch
level
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
GB7936260A
Other versions
GB2035561A (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB2035561A publication Critical patent/GB2035561A/en
Application granted granted Critical
Publication of GB2035561B publication Critical patent/GB2035561B/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
GB7936260A 1978-11-06 1979-10-18 Photoelectric level switch Expired GB2035561B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT793878A AT382967B (en) 1978-11-06 1978-11-06 PHOTOELECTRIC LEVEL SWITCH

Publications (2)

Publication Number Publication Date
GB2035561A GB2035561A (en) 1980-06-18
GB2035561B true GB2035561B (en) 1983-08-17

Family

ID=3600901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7936260A Expired GB2035561B (en) 1978-11-06 1979-10-18 Photoelectric level switch

Country Status (3)

Country Link
AT (1) AT382967B (en)
DE (1) DE2940799A1 (en)
GB (1) GB2035561B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488399A1 (en) * 1980-08-11 1982-02-12 Normandie Labo Liq. level detector for capillary tube - uses internal wall as cylindrical mirror illuminated by laser beam whose reflection is detected for determination of level of liquid
DE3242455A1 (en) * 1982-11-12 1984-05-17 Dr. Bruno Lange Gmbh, 1000 Berlin Arrangement for filling the measuring cell of a photometer
DE3346198A1 (en) * 1983-12-21 1985-07-04 ABC-Analytische Biochemie GmbH, 8039 Puchheim Sensor for contactless detection of liquids in lines
DE3415242C1 (en) * 1984-04-24 1985-10-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Fibre-optical sensor
EP0185285A3 (en) * 1984-12-18 1987-05-06 Abbott Laboratories Liquid level measurement apparatus
DE3515890A1 (en) * 1985-05-03 1986-11-06 PKL Verpackungssysteme GmbH, 4000 Düsseldorf LEVEL LEVEL MEASURING DEVICE FOR LIQUIDS, IN PARTICULAR H (DOWN ARROW) 2 (DOWN ARROW) O (DOWN ARROW) 2 (DOWN ARROW)
US4933147A (en) * 1985-07-15 1990-06-12 Abbott Laboratories Unitized reagent containment system for clinical analyzer
JPS6339635U (en) * 1986-09-02 1988-03-15
EP0393144A4 (en) * 1988-10-20 1992-08-12 Conax Buffalo Corporation Optical liquid level sensors
GB2226879A (en) * 1989-01-05 1990-07-11 Chou Kao Jung Level sensor for intravenous drip bottle
DE4028881A1 (en) * 1990-09-12 1992-03-19 Rheinhuette Gmbh & Co Protecting gas or liq. delivery system against dry running - using light transmitted via transparent walls to receiver only if without medium
DE102012203686B4 (en) 2012-03-08 2021-11-18 Leica Biosystems Nussloch Gmbh Automatic coverslipper with optical limit level measuring device for a liquid

Also Published As

Publication number Publication date
AT382967B (en) 1987-05-11
GB2035561A (en) 1980-06-18
DE2940799A1 (en) 1980-05-14
ATA793878A (en) 1986-09-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee