JPS5676014A - Measuring device for liquid level at extreme low temperature - Google Patents
Measuring device for liquid level at extreme low temperatureInfo
- Publication number
- JPS5676014A JPS5676014A JP15296279A JP15296279A JPS5676014A JP S5676014 A JPS5676014 A JP S5676014A JP 15296279 A JP15296279 A JP 15296279A JP 15296279 A JP15296279 A JP 15296279A JP S5676014 A JPS5676014 A JP S5676014A
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- level indicator
- power source
- switching apparatus
- continuous liquid
- 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
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
PURPOSE: To reduce a heat generation from a continuous liquid level indicator as little as possible by a method wherein a switching apparatus is installed between a power source line for a measuring element and the power source for a measuring element and a current is supplied only to a continuous liquid level indicator which is in contact with the liquid level of the extremely low temperature liquid.
CONSTITUTION: A measurement signal line 3 and a power source line 4 of a continuous liquid level indicator 2 installed in a liquid He container are connected to each contact of a switching apparatus 5, respectively. There are two sets of output of the switching apparatus 5. Each of them is connected to a voltmeter 8 to measure a terminal voltage of the continuous liquid level indicator 2 and to a power source 6 for measuring elements to supply a constant current to the continuous liquid level indicator 2. Since the switching apparatus 5 can change-over two circuits at a same time, each one unit for each of the voltmeter 8 and the power source for measuring elements is enough for the use. However, the dial of the voltmeter is of 4 kinds. When an indication of a voltmeter becoms a full scale, the operation of the switching apparatus is performed manually. In this way, heat generation can be reduced extremely small from a continuous liquid level indicator.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15296279A JPS5676014A (en) | 1979-11-28 | 1979-11-28 | Measuring device for liquid level at extreme low temperature |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15296279A JPS5676014A (en) | 1979-11-28 | 1979-11-28 | Measuring device for liquid level at extreme low temperature |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5676014A true JPS5676014A (en) | 1981-06-23 |
Family
ID=15551955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15296279A Pending JPS5676014A (en) | 1979-11-28 | 1979-11-28 | Measuring device for liquid level at extreme low temperature |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5676014A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013156036A (en) * | 2012-01-26 | 2013-08-15 | Toshiba Corp | Liquid level detecting device and method |
-
1979
- 1979-11-28 JP JP15296279A patent/JPS5676014A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013156036A (en) * | 2012-01-26 | 2013-08-15 | Toshiba Corp | Liquid level detecting device and method |
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