JPS57114823A - Optical liquid level sensor - Google Patents

Optical liquid level sensor

Info

Publication number
JPS57114823A
JPS57114823A JP69481A JP69481A JPS57114823A JP S57114823 A JPS57114823 A JP S57114823A JP 69481 A JP69481 A JP 69481A JP 69481 A JP69481 A JP 69481A JP S57114823 A JPS57114823 A JP S57114823A
Authority
JP
Japan
Prior art keywords
light
liquid level
liquid
sensor
waterdrops
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.)
Granted
Application number
JP69481A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0340329B2 (enrdf_load_stackoverflow
Inventor
Kiyoshi Yamashita
Tomiji Minekane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP69481A priority Critical patent/JPS57114823A/ja
Publication of JPS57114823A publication Critical patent/JPS57114823A/ja
Publication of JPH0340329B2 publication Critical patent/JPH0340329B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
JP69481A 1981-01-08 1981-01-08 Optical liquid level sensor Granted JPS57114823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP69481A JPS57114823A (en) 1981-01-08 1981-01-08 Optical liquid level sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP69481A JPS57114823A (en) 1981-01-08 1981-01-08 Optical liquid level sensor

Publications (2)

Publication Number Publication Date
JPS57114823A true JPS57114823A (en) 1982-07-16
JPH0340329B2 JPH0340329B2 (enrdf_load_stackoverflow) 1991-06-18

Family

ID=11480862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP69481A Granted JPS57114823A (en) 1981-01-08 1981-01-08 Optical liquid level sensor

Country Status (1)

Country Link
JP (1) JPS57114823A (enrdf_load_stackoverflow)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4738202U (enrdf_load_stackoverflow) * 1971-05-25 1972-12-27
JPS53132391U (enrdf_load_stackoverflow) * 1977-03-26 1978-10-20
JPS53163158U (enrdf_load_stackoverflow) * 1977-05-30 1978-12-20

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4738202U (enrdf_load_stackoverflow) * 1971-05-25 1972-12-27
JPS53132391U (enrdf_load_stackoverflow) * 1977-03-26 1978-10-20
JPS53163158U (enrdf_load_stackoverflow) * 1977-05-30 1978-12-20

Also Published As

Publication number Publication date
JPH0340329B2 (enrdf_load_stackoverflow) 1991-06-18

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