Operating conditions for gauge pressure and absolute pressure (from
the differential pressure series), differential pressure and flow rate
Enclosure with mounted HAN con‐
nector
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
-40 … +100 °C (-40 … +212 °F)
● Measuring cell
30 bar (435 psi),
PN420
-20 … +85 °C (-4 … +185 °F)
Measuring cell with inert
oil
-20 … +100 °C (-4 … +212 °F)
● Measuring cell
30 bar (435 psi),
PN420
-20 … +85 °C (-4 … +185 °F)
Measuring cell with FDA-
compliant oil
-10 ... +100°C (14 ...+212°F)
In conjunction with dust
explosion protection
-40 … +85 °C (-4 … +185 °F)
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 pres‐
sure of the relevant flange connec‐
tion.
Enclosure
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 con‐
nector and/or lightning protection
IP66/Type 4X
Technical data
8.4 Operating conditions
SITRANS P320/P420 with 4 to 20 mA/HART
92 Compact Operating Instructions, 09/2018, A5E38874562-AB
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