JPS5571914A - Superconductive liquid level indicator - Google Patents
Superconductive liquid level indicatorInfo
- 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
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
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)
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 |
-
1978
- 1978-11-25 JP JP14497278A patent/JPS5571914A/en active Pending
Cited By (2)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5610244A (en) | Temperature sensor controlling device | |
JPS5571914A (en) | Superconductive liquid level indicator | |
JPS5587941A (en) | Humidity sensor | |
JPS5593024A (en) | Superconductive liquid level indicator | |
JPS5682421A (en) | Apparatus overheat detection device | |
JPS5526409A (en) | Liquid surface detection element of extremely low-temperature cooling medium | |
JPS5471664A (en) | Liquid level gauge | |
JPS5576960A (en) | Method of measuring low grounding resistance | |
JPS5537977A (en) | Superconductive magnetism measuring element | |
HAGEDORN | Transfer behavior of superconducting coils with high current density and electronic protective circuitry[Ph. D. Thesis] | |
JPS5237079A (en) | Impedance measuring device | |
JPS52114293A (en) | Superconductor device | |
JPS5393072A (en) | Earthing resistance measuring apparatus | |
JPS5348479A (en) | Dv/dt rating measuring circuit of thyristor | |
JPS5216628A (en) | Dc current transformer | |
JPS6436003A (en) | Measuring wire for cryogenic device | |
JPS54111717A (en) | Signal supplying unit | |
GB1030161A (en) | Improvements in or relating to position sensitive devices | |
JPS5248996A (en) | Level gauge | |
JPS6447924A (en) | Temperature measuring apparatus | |
JPS6453211A (en) | Electrical heating device | |
JPS57173913A (en) | Power lead for current supply | |
JPS5234772A (en) | Electrochemical element | |
JPS52145246A (en) | Slide resistance-electric signal converter | |
JPS5343482A (en) | Leakage current measuring method of semiconductor device |