Maintenance 3
400/54 Premium Shielded NMR Magnet System Product Overview 33
the magnet, and the South is at the bottom. The following
procedure describes the method for determining the
energization direction.
1 Align the compass to geographic north outside of the
building, away from all magnetizable structures. Note
which end of the needle points to geographic north.
(Geographic north pole coincides with magnetic south
pole.) In the following steps, this end of the needle is
referred to as the “N end of the needle”.
2 Approach the ends of the magnet with the compass,
continuously observing the needle. Keep the compass
away from the magnetized elements, because they can
demagnetize the compass needle.
3 Proceed as described above. The “N end of the needle”
must point to the bottom of the magnet (pointing up the
bore tube from the floor). This is the S end of the
magnet. The reverse is checked at the top of the magnet
(the “S end of the needle” must point down towards the
bore tube from the top of the magnet, indicating that this
is the N end of the magnet).
4 Repeat by aligning the compass to geographic north
outside the building, away from all magnetizable
structures. Ensure that the same end, the “N end of the
needle”, points to the geographic north as before. This
confirms that the compass was not demagnetized, and
the measurement was successful.
To Next Page
Loading...
