PKR 251 Pressure Gauge: Difference between revisions
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[[File:PKR251_Picture. |
[[File:PKR251_Picture.jpg|thumb|150px]] |
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==Files== |
==Files== |
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[https://wiki.physics.wisc.edu/yavuz/images/e/ee/PKR251_manual_2008-04.pdf User Manual] |
* [https://wiki.physics.wisc.edu/yavuz/images/e/ee/PKR251_manual_2008-04.pdf User Manual] |
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[https://wiki.physics.wisc.edu/yavuz/index.php/File:PKR251_Cleaning_Rev_1.pdf Cleaning Instructions] |
* [https://wiki.physics.wisc.edu/yavuz/index.php/File:PKR251_Cleaning_Rev_1.pdf Cleaning Instructions] |
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==Notes== |
==Notes== |
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'''10/20/2014''' |
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* The pressure gauge is reading a constant 4e-3 mbar whether the cryostat is at room temperature or cooled down with liquid helium. This is too high of a pressure. Because we have not changed the anything with the cryostat that would have caused a leak in the vacuum and because the reading is not changing at all, I think the pressure gauge is not reading the correct thing rather than there being something wrong with something else in the system. |
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* I contacted Pfeiffer Vacuum and they sent the manual and cleaning instructions above. I took the gauge apart and cleaned it as instructed. I did not replace any parts. |
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Revision as of 06:05, 21 October 2014
Files
Notes
10/20/2014
- The pressure gauge is reading a constant 4e-3 mbar whether the cryostat is at room temperature or cooled down with liquid helium. This is too high of a pressure. Because we have not changed the anything with the cryostat that would have caused a leak in the vacuum and because the reading is not changing at all, I think the pressure gauge is not reading the correct thing rather than there being something wrong with something else in the system.
- I contacted Pfeiffer Vacuum and they sent the manual and cleaning instructions above. I took the gauge apart and cleaned it as instructed. I did not replace any parts.