8.6 Display, keys and auxiliary power
Display and buttons
Keys 4 buttons for operation directly on the device
Display
• With or without integrated display (optional)
• Cover with glass pane (option)
Auxiliary power U
H
HART PROFIBUS PA
Terminal voltage on pressure transmitter
• DC 10.5 V … 45 V
• In the case of intrinsically
safe operation
10.5 V … 30 V DC
-
Auxiliary power – Bus-powered
Separate supply voltage – -
Bus voltage
• Not
– 9 … 32 V
• With intrinsically safe operation
– 9 … 24 V
Current consumption
• Max. basic current
– 12.5 mA
• Starting current ≤ basic current
– Yes
• Max. current in event of fault
– 15.5 mA
Fault disconnection electronics (FDE) available – Yes
Overvoltage protection up to 6 kV (internal)
Note Devices with internal overvoltage protection up to 6 kV do not pass the high voltage
test with 700 V DC according to IEC 60079-11.
For further information, see the associated certicate for explosion protection.
8.7 Certicates and approvals
Explosion protection in accordance with
ATEX
HART PROFIBUS PA
Certicate BVS 18 ATEX E049X
• Intrinsic safety "i"
Technical data
8.7 Certicates and approvals
SITRANS P320/P420
Compact Operating Instructions, 01/2021, A5E38874562-AC 81