Siemens SITRANS P DS III Serie Notice De Service page 21

WARNING
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.
Exception: It may be permissible to omit connection of the equipotential bonding for devices with type of protection
"Intrinsic safety Ex i".
WARNING
Unprotected cable ends
Danger of explosion through unprotected cable ends in hazardous areas.
● Protect unused cable ends in accordance with IEC/EN 60079-14.
WARNING
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.
WARNING
Connecting device in energized state
Danger of explosion in hazardous areas.
● Connect devices in hazardous areas only in a de-energized state.
Exceptions:
● 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
WARNING
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.
NOTICE
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 20
°C (68 °F) higher.
NOTICE
Incorrect measured values with incorrect grounding
The device must not be grounded via the "+" connection. It may otherwise malfunction and be permanently damaged.
● If necessary, ground the device using the "-" connection.
SITRANS P, DS III series (7MF4.33.. 7MF4.34.. 7MF4.35..)
A5E03434626-02, 12/2012
19