Explosion protection in accordance with ATEX
● Type of protection for Zone 2
A power supply unit of intrinsically safe protection
type "Ex
ia" in zone 2 is sufficient to connect devices
of intrinsically safe protection type [Ex ic].
Designation II 3G Ex ec IIC T4/T6 Gc
Permissible ambient temperature "ec" -40 … +80 °C (-40 … +176 °F) temperature class T4
-40 … +40 °C (-40 … +104 °F) temperature class T6
Permissible temperature of medium -40 … +100 °C (-40 … +212 °F) temperature class T4
-40 … +70 °C (-40 … +158 °F) temperature class T6
Connection "ec" To a circuit with the operating values:
U
n
= 10.5 to 30 V, 4 ... 20 mA
Technical data
13.10 Certificates and approvals
SITRANS P320/P420 with 4 to 20 mA/HART
240 Operating Instructions, 11/2019, A5E44852162-AC
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