Siemens SITRANS P Operating Instructions Manual page 67

Incorrect selection of type of protection
Risk of explosion in hazardous areas.
This device is approved for various types of protection.
1. Select an intrinsic safety type of protection "ia", "ib", "ic" or non-intrinsic safety "db", "tb", "tc",
"ec".
2. Connect the device according to the selected type of protection.
3. When operating with non-intrinsically safe power supplies, make the intrinsically safe types
of protection permanently unrecognizable as in the example.
Figure 6-1
NOTICE
Ambient temperature too high
Damage to cable sheath.
● At an ambient temperature ≥ 60 °C (140 °F), use heat-resistant cables suitable for an
NOTICE
Condensation in the device
Damage to device through formation of condensation if the temperature difference between
transportation or storage and the mounting location exceeds 20 °C (36 °F).
● Before taking the device into operation, let the device adapt for several hours in the new
NOTICE
Incorrect measured values with incorrect grounding
The device must not be grounded using the "+" connection. It may otherwise malfunction and
be permanently damaged.
● If necessary, ground the device using the "-" connection.
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
WARNING
Nameplate example: Type 7MF0..0-.....-.D..-Z + E20
ambient temperature at least 20 °C (36 °F) higher.
environment.
Connecting
6.1 Basic safety instructions
67