FR566220A - Improvements to reflective water level indicators - Google Patents

Improvements to reflective water level indicators

Info

Publication number
FR566220A
FR566220A FR566220DA FR566220A FR 566220 A FR566220 A FR 566220A FR 566220D A FR566220D A FR 566220DA FR 566220 A FR566220 A FR 566220A
Authority
FR
France
Prior art keywords
water level
level indicators
reflective water
reflective
indicators
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
Other languages
French (fr)
Inventor
Raoul Boizard
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
Application granted granted Critical
Publication of FR566220A publication Critical patent/FR566220A/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
    • 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
    • G01F23/2924—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms for several discrete levels, e.g. with more than one light-conducting sensing element

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
FR566220D 1923-05-15 1923-05-15 Improvements to reflective water level indicators Expired FR566220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR566220T 1923-05-15

Publications (1)

Publication Number Publication Date
FR566220A true FR566220A (en) 1924-02-11

Family

ID=8946948

Family Applications (1)

Application Number Title Priority Date Filing Date
FR566220D Expired FR566220A (en) 1923-05-15 1923-05-15 Improvements to reflective water level indicators

Country Status (1)

Country Link
FR (1) FR566220A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603090A (en) * 1948-08-27 1952-07-15 Diamond Power Speciality Multiport water level indicator
EP0124415A1 (en) * 1983-04-22 1984-11-07 Electricite De France Optical sensor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603090A (en) * 1948-08-27 1952-07-15 Diamond Power Speciality Multiport water level indicator
EP0124415A1 (en) * 1983-04-22 1984-11-07 Electricite De France Optical sensor
WO1984004384A1 (en) * 1983-04-22 1984-11-08 Electricite De France Optical probe
US4713552A (en) * 1983-04-22 1987-12-15 Electricite De France (Service National) Optical probe

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