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Instruction Manual
HASAxE-IM-HS
04/2006
Emerson Process Management GmbH & Co. OHGS-10
Magnetically Operated Front Panel
Magnetically Operated Front Panel
DANGER TO LIFE !
Persons with cardiac pacemakers should absolutely avoid magnetic
fields !
Negative effects on persons beyond those described above caused by
magnetic fields are not known. It is presumed that persons showing allergic
reaction on contact with ceramic or metallic material show the same
behavior on contact with magnetic material.
Permanent magnets are surrounded by magnetic fields. These magnetic
fields can disturb and even destroy sensitive electronic measuring devices,
but also mechanical watches, credit cards, etc.
Usually a distance of 20 inch (0.5 m) is enough to avoid damages. All sintered
permanent magnets are hard and brittle. Hitting of sintered permanent
magnets by the magnetic attraction causes splitting into fragments with many
sharp edges. This especially occurs with high energy magnets, and can
also cause skin bruises by high attraction.
High energy magnets made of rare-earth materials have to be stored dry,
otherwise the surfaces would oxidise. Unprotected operation in a humid
environment may cause corrosion. Avoid damaging the protective galvanic
coating.
A storage in a hydrogen atmosphere destroys these magnets. A
demagnetisation is caused when permanent magnet materials have been
exposed in a radioactive radiation for a long time.
For air transportation of magnetic material the IATA instructions have to be
observed:
Magnetic fields are not allowed to penetrate the package, if necessary the
magnets have to be shorted using a metal plate.