Emc Protection - HBM P8WT Operating Manual

P8WT
A1643-3.0 en/de/fr
6.5

EMC protection

Important
The transducers with shielded, round cables are EMC-
tested in accordance with EC directives and identified by
CE certification. However, you must connect the shield of
the connection cable to the shielding electronics housing
in order to achieve EMC protection for the measuring
chain. You must also connect the pressure connection
and therefore the housing of the transducer to ground.
For reliable measurements, signal differences of less
than 1μV must be transmitted without interference from
the transducer to the evaluation electronics. Due to the
numerous application options and the local constraints,
we can only provide you with information for correct con-
nection. The shielding concept suitable for your applica-
tion must be planned locally by an appropriate specialist.
S Use shielded, low-capacitance measurement cables
only (HBM cables fulfill both conditions).
S Do not route the measurement cables parallel to power
lines and control circuits. If this is not possible, protect
the measurement cable with e. g. steel conduit.
S Avoid stray fields from transformers, motors and con-
tact switches.
S Connect the shield of the connection cable extensively
on the shielding electronics housing.
S The shield of the connection cable must not be used
for discharging potential differences within the system.
You must therefore lay sufficiently dimensioned poten-
tial equalization lines to compensate for possible
potential differences.
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