JPS645206Y2 - - Google Patents

Info

Publication number
JPS645206Y2
JPS645206Y2 JP1981080397U JP8039781U JPS645206Y2 JP S645206 Y2 JPS645206 Y2 JP S645206Y2 JP 1981080397 U JP1981080397 U JP 1981080397U JP 8039781 U JP8039781 U JP 8039781U JP S645206 Y2 JPS645206 Y2 JP S645206Y2
Authority
JP
Japan
Prior art keywords
liquid level
display
outputs
comparator
output signal
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
JP1981080397U
Other languages
English (en)
Japanese (ja)
Other versions
JPS57192420U (enrdf_load_stackoverflow
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
Priority to JP1981080397U priority Critical patent/JPS645206Y2/ja
Publication of JPS57192420U publication Critical patent/JPS57192420U/ja
Application granted granted Critical
Publication of JPS645206Y2 publication Critical patent/JPS645206Y2/ja
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
    • G01F23/0007—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 for discrete indicating and measuring
    • 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
    • G01F23/02—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 gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Indicating Measured Values (AREA)
JP1981080397U 1981-05-30 1981-05-30 Expired JPS645206Y2 (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1981080397U JPS645206Y2 (enrdf_load_stackoverflow) 1981-05-30 1981-05-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1981080397U JPS645206Y2 (enrdf_load_stackoverflow) 1981-05-30 1981-05-30

Publications (2)

Publication Number Publication Date
JPS57192420U JPS57192420U (enrdf_load_stackoverflow) 1982-12-06
JPS645206Y2 true JPS645206Y2 (enrdf_load_stackoverflow) 1989-02-09

Family

ID=29875954

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1981080397U Expired JPS645206Y2 (enrdf_load_stackoverflow) 1981-05-30 1981-05-30

Country Status (1)

Country Link
JP (1) JPS645206Y2 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4497637B2 (ja) * 1999-11-01 2010-07-07 株式会社ノーケン 静電容量式検知装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54136855A (en) * 1978-04-14 1979-10-24 Matsushita Electric Ind Co Ltd Display device
JPS5813296Y2 (ja) * 1978-06-02 1983-03-15 株式会社小糸製作所 表示装置駆動回路

Also Published As

Publication number Publication date
JPS57192420U (enrdf_load_stackoverflow) 1982-12-06

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