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Les langues disponibles
5. Equipment required in addition
1 ESR/NMR basic set
1 Analogue oscilloscope, 2x30 MHz
2 High-frequency cable
alternatively
1 3B NETlog™ unit (230 V, 50/60 Hz)
or
1 3B NETlog™ unit(115, 50/60 Hz)
1 3B NETlab™ program
2 HF cables with BNC/4-mm plugs
1 PC
6. Operation
6.1 Assembly of the basic unit
The discs, the pole surfaces of the magnets and the
probe chamber in the basic unit must all be free of
grease, dust and debris.
•
If necessary they should be cleaned using iso-
propanol.
•
Insert the discs into both sides of the sample
chamber (see Fig. 1).
Fig. 1 Sample chamber with assembly discs inserted
•
Twist the metal rod into the yoke of the magnet
unit. Place the magnet unit in the clip on the
basic unit as shown in Fig. 2.
•
Take the magnet unit in both hands and push the
yoke downwards with your thumbs (see Fig. 3).
•
Push the coils over the magnets, making sure
the direction if the windings is the same. The
embossed arrows on the coils must point in the
same direction.
•
Push the completed magnet unit onto the discs
(see Fig. 4).
•
Tighten both the knurled screws by hand to the
same extent. Make sure the magnets match the
discs precisely. If necessary, push the discs fully
back into the chamber again.
U188031
U11175
U11255
U11300-230
U11300-115
U11310
U11257
Fig. 3 Removing the yoke from the permanent magnet
Fig. 4 Basic unit completed with permanent magnets and
6.1.1 Removing magnet unit
•
Take the sample out of the sample chamber in
the basic unit.
•
Disconnect the cables between the coils and the
control console.
•
Loosen the knurled screws.
•
Turn the basic unit so that the magnet unit is
pointing forwards.
•
Lift up the yoke till it is on top of the sample.
2
Fig. 2 Permanent magnet inserted into basic unit
coils
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