DE1904568B2 - Lichtelektrisches steuergeraet - Google Patents

Lichtelektrisches steuergeraet

Info

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
Application number
DE19691904568
Other languages
English (en)
Other versions
DE1904568A1 (de
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 filed Critical
Publication of DE1904568A1 publication Critical patent/DE1904568A1/de
Publication of DE1904568B2 publication Critical patent/DE1904568B2/de
Pending 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

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)
DE19691904568 1968-02-01 1969-01-30 Lichtelektrisches steuergeraet Pending DE1904568B2 (de)

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)

* Cited by examiner, † Cited by third party
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

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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