DE1904568B2 - Lichtelektrisches steuergeraet - Google Patents
Lichtelektrisches steuergeraetInfo
- Publication number
- DE1904568B2 DE1904568B2 DE19691904568 DE1904568A DE1904568B2 DE 1904568 B2 DE1904568 B2 DE 1904568B2 DE 19691904568 DE19691904568 DE 19691904568 DE 1904568 A DE1904568 A DE 1904568A DE 1904568 B2 DE1904568 B2 DE 1904568B2
- Authority
- DE
- Germany
- Prior art keywords
- control unit
- light control
- electric light
- electric
- unit
- 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.)
- Pending
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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Pens And Brushes (AREA)
- Control Of Non-Electrical Variables (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US70227368A | 1968-02-01 | 1968-02-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1904568A1 DE1904568A1 (de) | 1970-01-15 |
DE1904568B2 true DE1904568B2 (de) | 1971-05-13 |
Family
ID=24820532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19691904568 Pending DE1904568B2 (de) | 1968-02-01 | 1969-01-30 | Lichtelektrisches steuergeraet |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS4827945B1 (de) |
DE (1) | DE1904568B2 (de) |
FR (1) | FR2001133A1 (de) |
GB (1) | GB1254860A (de) |
SE (1) | SE375609B (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3417023C2 (de) * | 1984-05-09 | 1987-04-09 | Wolfgang Dr. 7000 Stuttgart Ruhrmann | Sensor zum Messen des Füllstandes einer Flüssigkeit |
DE3621009A1 (de) * | 1986-06-23 | 1988-01-07 | Truetzschler & Co | Vorrichtung zur erfassung des fuellstandes in einem fasermaterialspeicher, insbesondere fuer spinnereivorbereitungsmaschinen |
GB2251690A (en) * | 1990-11-05 | 1992-07-15 | Rodney Whitham | Optical liquid level detector |
CA2186805C (en) * | 1995-12-01 | 2001-03-27 | Christopher C. Jung | Apparatus and method for sensing fluid level |
US7786457B2 (en) | 2006-06-28 | 2010-08-31 | Alcon, Inc. | Systems and methods of non-invasive level sensing for a surgical cassette |
US8760637B2 (en) | 2010-08-30 | 2014-06-24 | Alcon Research, Ltd. | Optical sensing system including electronically switched optical magnification |
-
1968
- 1968-12-31 GB GB6196468A patent/GB1254860A/en not_active Expired
-
1969
- 1969-01-28 SE SE109769A patent/SE375609B/xx unknown
- 1969-01-30 DE DE19691904568 patent/DE1904568B2/de active Pending
- 1969-01-31 FR FR6902117A patent/FR2001133A1/fr not_active Withdrawn
- 1969-01-31 JP JP722369A patent/JPS4827945B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
GB1254860A (en) | 1971-11-24 |
FR2001133A1 (de) | 1969-09-26 |
JPS4827945B1 (de) | 1973-08-28 |
SE375609B (de) | 1975-04-21 |
DE1904568A1 (de) | 1970-01-15 |
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