Siemens SITRANS P500 with HART Compact Operating Instructions page 10

Connecting
Safety notes for connection
For all devices
WARNING
If auxiliary power is required, check that it corresponds with that on the nameplate and with the test certification valid for
your country.
CAUTION
Incorrect measurement values due to incorrect grounding
It is not permissible to ground the device using the "+" connection. This can lead to malfunctions with permanent damage
to the device.
● If necessary, ground the device using the "-" connection.
General explosion protection
WARNING
Risk of explosion
Non-compliance with the stipulations and laws during connection and installation increases the risk of explosion due to
improper use.
When connecting and installing, follow only the test certifications, stipulations and laws applicable in your country in order
to avoid the risk of explosion.
For example, for hazardous areas these are:
● IEC 60079-14 (international)
● National Electrical Code (NEC - NFPA 70) (USA)
● Canadian Electrical Code (CEC) (Canada)
● EN 60079-14 (earlier VDE 0165, T1) (EU)
● Ordinance on Industrial Safety and Health (Germany)
WARNING
Explosion protection
Connect the device to the equipotential bonding.
Free cable ends are not permitted in hazardous areas. Use suitable protection types, e.g., flameproof enclosure Ex "d" or
increased safety Ex "e", to protect the free cable ends.
For shielded cables in hazardous areas, note that only end is permitted to be grounded. Install a potential equalising cable
if grounding on both ends is required.
WARNING
Cable glands
The cables must be matched to the cable glands. If you use the cable glands M20 x 1.5 and ½-14" NPT, which can be
ordered separately, only the cables having a diameter of 6 to 12 mm must be laid into the device.
After installation, make sure that the cables are positioned securely and that the seals are in the correct position.
Type of protection "nA", "nL", "ic"
In the case of devices with type of protection "nA", "nL" and "ic" (Zone 2), only use cables having a diameter of 8 to 12 mm
owing to the required tensile strength, or use a suitable cable gland in case of smaller diameters.
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SITRANS P500 with HART
A5E02307339-02, 09/2010