JPH0236170B2 - - Google Patents

Info

Publication number
JPH0236170B2
JPH0236170B2 JP57068679A JP6867982A JPH0236170B2 JP H0236170 B2 JPH0236170 B2 JP H0236170B2 JP 57068679 A JP57068679 A JP 57068679A JP 6867982 A JP6867982 A JP 6867982A JP H0236170 B2 JPH0236170 B2 JP H0236170B2
Authority
JP
Japan
Prior art keywords
level
storage tank
fluid
detector
frequency
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 - Lifetime
Application number
JP57068679A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58186017A (ja
Inventor
Nobuo Matsushita
Keishin Furukawa
Masakatsu Fujimoto
Tomoaki Sumya
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP57068679A priority Critical patent/JPS58186017A/ja
Publication of JPS58186017A publication Critical patent/JPS58186017A/ja
Publication of JPH0236170B2 publication Critical patent/JPH0236170B2/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
    • G01F23/26—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
JP57068679A 1982-04-26 1982-04-26 レベル指示装置 Granted JPS58186017A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57068679A JPS58186017A (ja) 1982-04-26 1982-04-26 レベル指示装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57068679A JPS58186017A (ja) 1982-04-26 1982-04-26 レベル指示装置

Publications (2)

Publication Number Publication Date
JPS58186017A JPS58186017A (ja) 1983-10-29
JPH0236170B2 true JPH0236170B2 (enrdf_load_stackoverflow) 1990-08-15

Family

ID=13380643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57068679A Granted JPS58186017A (ja) 1982-04-26 1982-04-26 レベル指示装置

Country Status (1)

Country Link
JP (1) JPS58186017A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60192226A (ja) * 1984-03-14 1985-09-30 Tokyo Tatsuno Co Ltd 静電容量式液面計
JPH02102443A (ja) * 1988-10-07 1990-04-16 C L Keisoku Kogyo Kk 界面検出装置
JP2003291367A (ja) * 2002-04-02 2003-10-14 Sony Corp 液体残量表示装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5410261A (en) * 1977-06-24 1979-01-25 Tateyama Aluminum Kogyo Kk Method and apparatus for molding helecal shaped member

Also Published As

Publication number Publication date
JPS58186017A (ja) 1983-10-29

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