Operating conditions for level
Installation conditions
● Installation instruction
Specified by the flange
Ambient conditions
● Ambient temperature
Note Observe the allocation of the max. permissible operating temperature to the max. permissible
operating pressure of the relevant flange connection.
Enclosure -40 … +100 °C (-40 … +212 °F)
Measuring cell with sili‐
cone oil filling
-40 … +85 °C (-40 … +185 °F)
Display -20 … +80 °C (-4 … +185 °F)
● Storage temperature
-50 … +85 °C (-58 … +185 °F)
Climate class in accordance
with IEC 60721-3-4
4K4H
Degree of protection accord‐
ing to IEC/EN 60529/UL50-E
Enclosure with appropriate cable
gland
IP66/Type 4X
IP68 (2 hours at 1.5 m)
Enclosure with mounted M12 device
plug and/or lightning protection
1)
IP66/Type 4X
Enclosure with mounted HAN device
plug
1)
IP65
Electromagnetic compatibili‐
ty
Interference emission and
interference immunity
In accordance with EN 61326 and
NAMUR NE 21
Process medium conditions
● Process temperature
Measuring cell with sili‐
cone oil filling
● Plus side: See mounting flange
●
Minus side: -40 … +100 °C
(-40 … +212 °F)
1)
Only for non-Ex devices, not approved for use in Ex areas (ATEX, IECEx, FM, CSA)
Technical data
13.5 Operating conditions
SITRANS P320/P420 with 4 to 20 mA/HART
232 Operating Instructions, 11/2019, A5E44852162-AC
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