JPS5713320A - Liquid level gauge - Google Patents

Liquid level gauge

Info

Publication number
JPS5713320A
JPS5713320A JP8733380A JP8733380A JPS5713320A JP S5713320 A JPS5713320 A JP S5713320A JP 8733380 A JP8733380 A JP 8733380A JP 8733380 A JP8733380 A JP 8733380A JP S5713320 A JPS5713320 A JP S5713320A
Authority
JP
Japan
Prior art keywords
liquid level
transducers
impedance
acoustic
changes
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.)
Pending
Application number
JP8733380A
Other languages
Japanese (ja)
Inventor
Tetsuo Imai
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 JP8733380A priority Critical patent/JPS5713320A/en
Publication of JPS5713320A publication Critical patent/JPS5713320A/en
Pending 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

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)

Abstract

PURPOSE:To make possible accurate liquid level measurement by a method wherein use is made of the variation of the impedance of an ultrasonic transducer which is actuated by different waves depending on different acoustic media. CONSTITUTION:An ultrasonic wave driving current outputted from a power source 9 is transmitted to each of the transducers 71-7n via each signal cable 13 and the transducers 71-7n supply related ultrasonic waves in the direction parallel with the liquid level of each cooling material A. Due to the difference between 2 phases of a gas and a liquid in an acoustic medium, the current.acoustic coupling impedance of the transducers 71-7n changes with a liquid level as a boundary, while the impedance of the transducer 71 located in steam becomes larger than that of the transducers 72-7n within the cooling medium. Changes in impedance are judged as the presence of a liquid level as their current values are compared with the specified standard value by a comparator 11. The results obtained are displayed in a liquid level indicator 12.
JP8733380A 1980-06-27 1980-06-27 Liquid level gauge Pending JPS5713320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8733380A JPS5713320A (en) 1980-06-27 1980-06-27 Liquid level gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8733380A JPS5713320A (en) 1980-06-27 1980-06-27 Liquid level gauge

Publications (1)

Publication Number Publication Date
JPS5713320A true JPS5713320A (en) 1982-01-23

Family

ID=13911939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8733380A Pending JPS5713320A (en) 1980-06-27 1980-06-27 Liquid level gauge

Country Status (1)

Country Link
JP (1) JPS5713320A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052297U (en) * 1983-09-20 1985-04-12 トキコ株式会社 Refueling nozzle
JPS60228298A (en) * 1984-04-23 1985-11-13 株式会社　富永製作所 Method of controlling lubricating device
EP0385788A2 (en) * 1989-03-02 1990-09-05 Exxon Research And Engineering Company Passive acoustics method to monitor fluidized bed level
JPH0360030U (en) * 1989-10-18 1991-06-13
JP2010276593A (en) * 2009-04-27 2010-12-09 Toshiba Corp Level measuring device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052297U (en) * 1983-09-20 1985-04-12 トキコ株式会社 Refueling nozzle
JPS60228298A (en) * 1984-04-23 1985-11-13 株式会社　富永製作所 Method of controlling lubricating device
EP0385788A2 (en) * 1989-03-02 1990-09-05 Exxon Research And Engineering Company Passive acoustics method to monitor fluidized bed level
JPH0360030U (en) * 1989-10-18 1991-06-13
JP2010276593A (en) * 2009-04-27 2010-12-09 Toshiba Corp Level measuring device

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