WIKA WU-26 - Manual (Page 11)

11 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio, WU-2X
11553678.02 GB/D/F/E 10/2012
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.
■ Suitable connector minimum IP 54 shall be provided by end-user (In the end-use application
the degree of protection min IP54 shall be maintained). If applicable the connector shall be in
accordance with EN 60079-0:2006 and EN 60079-15:2005
■ Cable provided by end-user shall be suitable for the ambient temperature.
■ 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 regula-
tions. Take care to ensure that the electrical connection (e.g. M12 connector) is correctly
made (fully sealed).
GB