8.4 Operating conditions
Operating conditions for gauge pressure and absolute pressure (from the gauge pressure series)
Ambient conditions
● Ambient temperature
Note Observe the temperature class in hazardous areas.
Enclosure
Measuring cell with sili‐
cone oil filling
-40 … +85 °C (-40 … +185 °F)
Measuring cell with inert
oil for gauge pressure
measuring cells 1, 4, 16
and 63 bar
-40 ... +85 °C (-40 ...+185 °F)
Measuring cell with inert
oil
-20 … +85 °C (-4 … +185 °F)
Measuring cell with FDA-
compliant oil
-10 ...+85 °C (14 ... +185 °F)
Display -20 … +80 °C (-4 … +185 °F)
● Storage temperature
-50 … +85 °C (-58 … +185 °F)
(for FDA-compliant oil: -20 ... + 85 °C
(-4 ... +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
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
Technical data
8.4 Operating conditions
SITRANS P320/P420 with 4 to 20 mA/HART
Compact Operating Instructions, 09/2018, A5E38874562-AB 89
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