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WIKA Operating instructions/Betriebsanleitung, WU-2X
11553678.05 EN/DE 02/2019
7. Starting, operation
Electrical connection
WARNING!
Connect the enclosure to ground through the process connection, against electromagnetic fields
and electrostatic discharge.
WARNING!
Specific conditions for safe use in explosive atmosphere:
■
External earthing connection shall be established by end-user via pressure connection
minimum 4 mm² required. External earthing connection shall be corrosion resist and locked
against rotation.
■
The connector provided by the end user in the end use application shall be in accordance with
all applicable clauses of IEC 60079-0 and IEC 60079-15. A minimum degree of protection IP54
according to IEC 60529 shall be ensured.
■
Cable provided by end-user shall be suitable for the ambient temperature.
■
The Sub-D version has to be installed in a way that it is protected against an impact energy
> 4 J. The connector as well as the corresponding sealing are provided by the end user in the
end use application and shall be in accordance with all applicable clauses of IEC 60079-0 and
IEC 60079-15. A minimum degree of protection IP54 according to IEC 60529 shall be ensured.
■
Use only shielded cables. Note that with connectors no connection between cable shield and
housing is possible.
For instruments with cable outputs, the cable is always shielded. Depending upon the design
(ordered version) the screen may or may not be connected with the enclosure. An additional
equipotential bonding maybe required.
■
Ensure that the cable diameter you select fits to the cable gland of the connector Ensure that
the cable gland of the mounted connector is positioned correctly and that the sealings are
available and undamaged. Tighten the threaded connection and check the correct position of
the sealings in order to ensure the ingress protection
■
Cover flying leads with fine wires by an end splice (cable preparation).
■
Please make sure that the ends of cables with flying leads do not allow any ingress of moisture.
■
The transducer must be connected and operated in accordance with the approriate regulations.
Take care to ensure that the electrical connection (e.g. M12 connector) is correctly made (fully
sealed).
EN
