JPS54157669A - Method of obtaining fixed point at low temperature region and fixed point cell - Google Patents
Method of obtaining fixed point at low temperature region and fixed point cellInfo
- Publication number
- JPS54157669A JPS54157669A JP6495978A JP6495978A JPS54157669A JP S54157669 A JPS54157669 A JP S54157669A JP 6495978 A JP6495978 A JP 6495978A JP 6495978 A JP6495978 A JP 6495978A JP S54157669 A JPS54157669 A JP S54157669A
- Authority
- JP
- Japan
- Prior art keywords
- fixed point
- gas
- sealed
- temperature
- thermometer
- 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.)
- Granted
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
PURPOSE: To enable the triple point temperature of seal gas to be reproduced on the outside of a fixed point cell and the temperature fixed point necessary for thermometer calibration to be readily obtained by controlling the outside temperature of the fixed point cell of a pressure resistant construction wherein high purity gas is beforehand pressure-sealed.
CONSTITUTION: The fixed point cell consists of an outer tube 1 and an inner tube 2 these being constituted by material of good heat conductivity. A desired sample gas of well known properties is introduced into a gas well part 3 and fixed point part 4 and is sealed after it has been filled up to the specified pressure. After the thermometer to be calibrated is inserted into the hollow part 6 of the fixed point part 4, the fixed point part is cooled to liquefy the sealed gas then solidify the same. Next, while the solid of the sealed sample gas is being gradually melted with a heater or the like, the temperature of the thermometer to by calibrated is measured and a melting curve is drawn, whereby the calibration of the triple point temperatures is accomplished.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6495978A JPS588730B2 (en) | 1978-06-01 | 1978-06-01 | Method of obtaining fixed point in low temperature region and fixed point cell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6495978A JPS588730B2 (en) | 1978-06-01 | 1978-06-01 | Method of obtaining fixed point in low temperature region and fixed point cell |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54157669A true JPS54157669A (en) | 1979-12-12 |
JPS588730B2 JPS588730B2 (en) | 1983-02-17 |
Family
ID=13273082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6495978A Expired JPS588730B2 (en) | 1978-06-01 | 1978-06-01 | Method of obtaining fixed point in low temperature region and fixed point cell |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS588730B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS629140U (en) * | 1985-07-02 | 1987-01-20 | ||
US6324894B1 (en) * | 1998-05-25 | 2001-12-04 | Korea Research Institute Of Standards And Science | Device and method for measuring argon impurity by utilizing the triple point and the γ-β transition temperatures of oxygen |
US6939035B2 (en) | 2001-06-13 | 2005-09-06 | The Secretary Of State Of Her Majesty's Britannic Government | System for calibrating thermometers |
JP2007248277A (en) * | 2006-03-16 | 2007-09-27 | National Institute Of Advanced Industrial & Technology | Low temperature calibrating device for thermometer |
-
1978
- 1978-06-01 JP JP6495978A patent/JPS588730B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS629140U (en) * | 1985-07-02 | 1987-01-20 | ||
US6324894B1 (en) * | 1998-05-25 | 2001-12-04 | Korea Research Institute Of Standards And Science | Device and method for measuring argon impurity by utilizing the triple point and the γ-β transition temperatures of oxygen |
US6939035B2 (en) | 2001-06-13 | 2005-09-06 | The Secretary Of State Of Her Majesty's Britannic Government | System for calibrating thermometers |
JP2007248277A (en) * | 2006-03-16 | 2007-09-27 | National Institute Of Advanced Industrial & Technology | Low temperature calibrating device for thermometer |
JP4714850B2 (en) * | 2006-03-16 | 2011-06-29 | 独立行政法人産業技術総合研究所 | Thermometer low temperature calibration device |
Also Published As
Publication number | Publication date |
---|---|
JPS588730B2 (en) | 1983-02-17 |
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