JPS46540B1 - - Google Patents

Info

Publication number
JPS46540B1
JPS46540B1 JP6980268A JP6980268A JPS46540B1 JP S46540 B1 JPS46540 B1 JP S46540B1 JP 6980268 A JP6980268 A JP 6980268A JP 6980268 A JP6980268 A JP 6980268A JP S46540 B1 JPS46540 B1 JP S46540B1
Authority
JP
Japan
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
JP6980268A
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
Priority claimed from DE19671614865 external-priority patent/DE1614865A1/de
Application filed filed Critical
Publication of JPS46540B1 publication Critical patent/JPS46540B1/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle
    • 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)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
JP6980268A 1967-09-27 1968-09-27 Pending JPS46540B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671614865 DE1614865A1 (de) 1967-09-27 1967-09-27 Optoelektronische Halbleiteranordnung

Publications (1)

Publication Number Publication Date
JPS46540B1 true JPS46540B1 (ja) 1971-01-08

Family

ID=5682038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6980268A Pending JPS46540B1 (ja) 1967-09-27 1968-09-27

Country Status (3)

Country Link
JP (1) JPS46540B1 (ja)
FR (1) FR1585979A (ja)
GB (1) GB1239614A (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU524951B2 (en) * 1978-04-19 1982-10-14 See Probe Electronics Pty. Ltd. L.e.d. reflectance fluid level indicator
FR2494912A1 (fr) * 1980-11-21 1982-05-28 Radiotechnique Compelec Dispositif photocoupleur de detection
FR2594951B1 (fr) * 1986-02-24 1989-08-04 Photonique Ind Procede pour la mesure des caracteristiques physiques d'un milieu liquide ou gazeux et dispositif a fibres optiques pour sa mise en oeuvre
EP0292097B1 (en) * 1987-04-17 1993-05-26 NGK Spark Plug Co. Ltd. Device for detecting the mixing ratio of petrol and an alcohol or the like
AT506279A1 (de) * 2007-12-20 2009-07-15 Gassner Kurt Ing Diskontinuierliches verfahren zur abwasserreinigung

Also Published As

Publication number Publication date
GB1239614A (ja) 1971-07-21
FR1585979A (ja) 1970-02-06

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