there are a procedure for magnet cool down. It is not depend of the time is when to the nitrogen temperature is reached and this is about one or two days. In any case is much better that should be for qualify service.
you shuld wait until the N2 reached the precooling temp, depend of the initial temp of the oxford magnet and the cold head performance, but this should be betwen 36 Hrs to 60 HRs.
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(9)
(1)
Roberto Villalba
MRI magnet cool down
January 23, 2015 04:32
How much time is recomended to wait, after filling a magnet with Nirtogen, to fill it with Helium (oxford magnet).
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(15)
Francisco Rojas
re: MRI magnet cool down
January 24, 2015 01:03
there are a procedure for magnet cool down. It is not depend of the time is when to the nitrogen temperature is reached and this is about one or two days. In any case is much better that should be for qualify service.
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(2)
Shakeel Haider Cheema
re: MRI magnet cool down
January 24, 2015 01:03
72 hrs with cold head running.
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(9)
Bruce Barton
re: MRI magnet cool down
January 24, 2015 01:07
The longer you wait, the less He you will use. Anywhere from 2 hr. to 3 days (for 3 days, don't let it run out of N2
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(12)
Julio c. Gomez
re: MRI magnet cool down
January 28, 2015 08:40
Hello Roberto.
you shuld wait until the N2 reached the precooling temp, depend of the initial temp of the oxford magnet and the cold head performance, but this should be betwen 36 Hrs to 60 HRs.
good luck.
Julio C. Gomez.
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(12)
Julio c. Gomez
re: MRI magnet cool down
January 28, 2015 08:40
what kind of magnet you have ORxx?
Julio C. Gomez
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(6)
(31)
Milner A. Flecha
re: re: MRI magnet cool down
January 28, 2015 05:36
OR35
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