JPS5571914A - Superconductive liquid level indicator - Google Patents

Superconductive liquid level indicator

Info

Publication number
JPS5571914A
JPS5571914A JP14497278A JP14497278A JPS5571914A JP S5571914 A JPS5571914 A JP S5571914A JP 14497278 A JP14497278 A JP 14497278A JP 14497278 A JP14497278 A JP 14497278A JP S5571914 A JPS5571914 A JP S5571914A
Authority
JP
Japan
Prior art keywords
superconductor
gas
conductive state
ordinary
liquid level
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
JP14497278A
Other languages
Japanese (ja)
Inventor
Hayao Ichikawa
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 JP14497278A priority Critical patent/JPS5571914A/en
Publication of JPS5571914A publication Critical patent/JPS5571914A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a simple, reliable and continuously measurable device by connecting an ordinary conductor, the natural resistance of which is the same as that of supercondutor in an ordinary conductive state, to a superconductor in gas area.
CONSTITUTION: Current I is fed to the superconductor 1 placed in liquid helium 2 from the power supply 6 through the lead wire 7, voltage across the superconductor is read by the voltmeter 4 through the lead wire 3. When the value of current provided to the superconductor is set to a proper value, the superconductor can be maintained in an ordinary conductive state in gas and in a superconductive state in liquid due to the difference between both heat transfer rates of gas helium and liquid helium. When a heater wire 10 is connected to the tip end of the superconductor in gas area, the superconductor in the gas can be maintained in an ordinary conductive state by calorification. As a material of the heater wire 10, a material whose natural resistance is approximately the same as that of superconductor 1 is used.
COPYRIGHT: (C)1980,JPO&Japio
JP14497278A 1978-11-25 1978-11-25 Superconductive liquid level indicator Pending JPS5571914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14497278A JPS5571914A (en) 1978-11-25 1978-11-25 Superconductive liquid level indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14497278A JPS5571914A (en) 1978-11-25 1978-11-25 Superconductive liquid level indicator

Publications (1)

Publication Number Publication Date
JPS5571914A true JPS5571914A (en) 1980-05-30

Family

ID=15374472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14497278A Pending JPS5571914A (en) 1978-11-25 1978-11-25 Superconductive liquid level indicator

Country Status (1)

Country Link
JP (1) JPS5571914A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5114907A (en) * 1991-03-15 1992-05-19 Illinois Superconductor Corporation Cryogenic fluid level sensor
US5593949A (en) * 1993-07-06 1997-01-14 Lockheed Martin Corporation High temperature conductor probes for determining liquid level of cryogens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5114907A (en) * 1991-03-15 1992-05-19 Illinois Superconductor Corporation Cryogenic fluid level sensor
US5593949A (en) * 1993-07-06 1997-01-14 Lockheed Martin Corporation High temperature conductor probes for determining liquid level of cryogens

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