Extension Cables; Emc Protection - HBM S9M Montageanleitung

8.3

Extension cables

Only use shielded, low-capacitance measurement cables for extension. Ensure that the
connection is perfect, with a low contact resistance.
The cable of a six-wire transducer can be extended with a cable of the same type.
8.4

EMC protection

Electrical and magnetic fields often induce interference voltages in the measuring circuit.
Therefore:
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Use shielded, low-capacitance measurement cables only (HBM cables fulfill both con­
ditions)
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Do not route the measurement cables parallel to power lines and control circuits. If
this is not possible, protect the measurement cable with steel conduits, for example
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Avoid stray fields from transformers, motors and contact switches
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Do not ground the transducer, amplifier and indicator more than once.
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Connect all devices in the measuring chain to the same protective ground conductor
To ensure the best EMC protection, the transducer, together with the connection cable
and the downstream electronics, should be placed in a shielded enclosure.
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ELECTRICAL CONNECTION
S9M