SITRANS P310 with HART
A5E35075329-01, 05/2015
19
Danger of explosion in hazardous areas due to voltage flashover.
•
Connect the device to an extra-low voltage with safe isolation (SELV).
Lack of equipotential bonding
Danger of explosion through compensating currents or ignition currents through lack of equipotential bonding.
• Ensure that the device is potentially equalized.
: It may be permissible to omit connection of the equipotential bonding for devices with type of protection
"Intrinsic safety Ex i".
Danger of explosion through unprotected cable ends in hazardous areas.
•
Protect unused cable ends in accordance with IEC/EN 60079-14.
Improper laying of shielded cables
Danger of explosion through compensating currents between hazardous area and the non-hazardous area.
• Only ground shielded cables that run into the hazardous area at one end.
•
If grounding is required at both ends, use an equipotential bonding conductor.
Connecting device in energized state
Danger of explosion in hazardous areas.
• Connect devices in hazardous areas only in a de-energized state.
:
• Circuits of limited energy may also be connected in the energized state in hazardous areas.
• Exceptions for type of protection "Non-sparking nA" (Zone 2) are regulated in the relevant certificate
Incorrect selection of type of protection
Danger of explosion in areas subject to explosion hazard.
This device is approved for several types of protection.
1. Decide in favor of one type of protection.
2. Connect the device in accordance with the selected type of protection.
3. In order to avoid incorrect use at a later point, make the types of protection that are not used permanently
unrecognizable on the nameplate.
Ambient temperature too high
Damage to cable sheath.
• At an ambient temperature ≥ 60 °C (140 °F), use heat-resistant cables suitable for an ambient temperature at least
To Next Page
Loading...
