Sensor Circuits (Remote Version Only) - Siemens SITRANS FX300 Supplementary Instructions Manual

SITRANS FX300

4.5 Sensor circuits (remote version only)

Observe the following points when connecting the sensor to the converter:
• Use only the supplied connecting cable (max. length 30 m / 98 ft).
• Before connecting or loosening the equipotential bonding cable, ensure there are no
differences in potential.
• Connect the connecting cable shield to the equipotential bonding of the hazardous area using
the stress resisting clamp in the wall bracket. Sensor-side, the shield must be carefully
isolated from the earth (Test voltage 500 V
• The intrinsically safe pressure transmitter circuit (pressure, terminals 1-5) and the
intrinsically safe piezo / Pt1000 circuit (piezo, terminals 1-3 and Pt1000, terminals 1-2) are to
be galvanically isolated from one another and from the earth along the complete length up to
the connections in the wall bracket.
The separate sensor circuits are designed in type of protection intrinsic safety Ex ia IIC.
05/2015 - SFIDK.PS.050.G1.02 A5E02172013
ELECTRICAL CONNECTIONS
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