Cable Extension; Emc Protection - HBM S9M Notice De Montage

S9M

6.3 Cable extension

Only use shielded, low-capacitance measurement cables for extension. En­
sure that 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.

6.4 EMC protection

Electrical and magnetic fields often induce interference voltages in the mea­
suring circuit. Therefore:
S Use shielded, low-capacitance measurement cables only (HBM cables ful­
fill both conditions)
S Do not route the measurement cables parallel to power lines and control cir­
cuits. If this is not possible, protect the measurement cable with steel conduit
for example
S Avoid stray fields from transformers, motors and contact switches
S Do not ground the transducer, amplifier and indicator more than once
S Connect all devices in the measurement chain to the same grounded
conductor
To ensure the best EMC protection, the transducer, together with the connec­
tion cable and the subsequent electronics, should be placed in a shielded en­
closure.
A3019-5.0 en/de/fr
19
HBM