GB2035561B - Photoelectric level switch - Google Patents
Photoelectric level switchInfo
- 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
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)
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)
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 |
-
1978
- 1978-11-06 AT AT793878A patent/AT382967B/en not_active IP Right Cessation
-
1979
- 1979-10-09 DE DE19792940799 patent/DE2940799A1/en not_active Withdrawn
- 1979-10-18 GB GB7936260A patent/GB2035561B/en not_active Expired
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 |