e. Store magnets with their keepers in place.
(1) Finally, when you store
magnets, always put their keeper in
place.
The keeper concentrates the
field between the poles and helps the
magnet retain its strength. Also, if
a magnet becomes weak, you can restore
its strength somewhat by inserting
and removing the keeper five or six
times.
(2) If you have two or more magnets stored in the same area, be sure
they are separated by at least six inches.
This separation prevents
interaction of the fields, which could cause loss of field strength.
If
there is any doubt about the field strength of the magnet, you should
measure its strength.
24. Measuring magnet flux.
a. When you are replacing a magnet and are not sure of its strength,
measure it with a fluxmeter. In fact, it's a good idea to measure the flux
of any new magnet before you put it in the set. You don't know whether or
not the magnet has been dropped or tapped before you received it. The only
way to be sure it has the correct strength is to measure it with a fluxmeter
(Figure 96).
Figure 96.
Measuring the Field Strength
of a Magnet.
b. A fluxmeter is a piece of test equipment that measures the strength
of a magnet field. It consists of two main parts:
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