institut national de métrologie (lne-inm/cnam) workshop 732 – november 23-24, 2006 1 past...
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![Page 1: Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006 1 Past Improvements of the INM type Argon Device and Future Ways](https://reader035.vdocument.in/reader035/viewer/2022062721/56649f1e5503460f94c3561a/html5/thumbnails/1.jpg)
1Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
![Page 2: Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006 1 Past Improvements of the INM type Argon Device and Future Ways](https://reader035.vdocument.in/reader035/viewer/2022062721/56649f1e5503460f94c3561a/html5/thumbnails/2.jpg)
2Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
G. Bonnier, 1974
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3Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
Main faults:
-Sensitive to pressure change (atmospheric + hydrostatic)
- Immersion condition changing with time
Main advantages:
- Simple to use
- No electronic devices
![Page 4: Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006 1 Past Improvements of the INM type Argon Device and Future Ways](https://reader035.vdocument.in/reader035/viewer/2022062721/56649f1e5503460f94c3561a/html5/thumbnails/4.jpg)
4Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
Sensitive to atmospheric and hydrostatic pressure changes ?
Solution ?
Sensitive to atmospheric and hydrostatic pressure changes ?
Solution ?
![Page 5: Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006 1 Past Improvements of the INM type Argon Device and Future Ways](https://reader035.vdocument.in/reader035/viewer/2022062721/56649f1e5503460f94c3561a/html5/thumbnails/5.jpg)
5Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
Sensitive to atmospheric pressure changes ?
Solution ?
![Page 6: Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006 1 Past Improvements of the INM type Argon Device and Future Ways](https://reader035.vdocument.in/reader035/viewer/2022062721/56649f1e5503460f94c3561a/html5/thumbnails/6.jpg)
6Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
1990 : The argon triple point by an adiabatic method –INM internal report
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7Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
1990 : The argon triple point by an adiabatic method – F. Roussel – INM internal report
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8Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
Main faults:
- Not so easy to use
- Immersion condition changing with time
Main advantages:
- non sensitive to pressures changes
![Page 9: Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006 1 Past Improvements of the INM type Argon Device and Future Ways](https://reader035.vdocument.in/reader035/viewer/2022062721/56649f1e5503460f94c3561a/html5/thumbnails/9.jpg)
9Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
How to improve the immersion condition
Not useful ?
N2 heat pipes
Argon gas
Liquid argon
1985
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
How to improve the immersion condition
1985 : the argon triple point: Study of the thermal conditions –INM – internal report
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11
Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
How to improve the immersion condition
1990 : An adiabatic calorimeter for calibration at the argon triple point –
INM- Tempmeko90
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
How to improve the immersion condition
Maintaining the guard cell
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
How to improve the immersion condition
2002 – “Argon Triple Point Device to Calibrate Long Stem Thermometers in Quasi Adiabatic Conditions” “Temperature” chicago
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
How to improve the immersion condition
![Page 15: Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006 1 Past Improvements of the INM type Argon Device and Future Ways](https://reader035.vdocument.in/reader035/viewer/2022062721/56649f1e5503460f94c3561a/html5/thumbnails/15.jpg)
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
How to improve the immersion condition
![Page 16: Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006 1 Past Improvements of the INM type Argon Device and Future Ways](https://reader035.vdocument.in/reader035/viewer/2022062721/56649f1e5503460f94c3561a/html5/thumbnails/16.jpg)
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
Future ways ?
Main faults on the “actual” system
-Sensitive to pressure change (atmospheric + hydrostatic)
- Immersion condition changing with time
Pressure regulation :
Reference: vacuum or temperature?
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
Future ways ?
Our choice
Pressure regulator
thermometer
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
Future ways ?
Main faults on the “actual” system
-Sensitive to pressure change (atmospheric + hydrostatic)
- Immersion condition changing with time
Level of liquid nitrogen ?
![Page 19: Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006 1 Past Improvements of the INM type Argon Device and Future Ways](https://reader035.vdocument.in/reader035/viewer/2022062721/56649f1e5503460f94c3561a/html5/thumbnails/19.jpg)
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
Future ways ?
Our choices
Pressure regulator
Insulations
thermometer
Liquid nitrogen
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Institut National de Métrologie (LNE-INM/CNAM) Workshop 732 – November 23-24, 2006
Past Improvements of the INM type Argon Device and Future Ways
Future ways ?
Our choicesPressure regulator
Liquid nitrogen
Filling tube
Guard cell
Experimental space (vacuum)
Thermal shield
Main cell