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7.4
Operating conditions
Operating conditions for gauge pressure and absolute pressure (from the gauge pressure series)
Ambient conditions
● Ambient temperature
Note
Enclosure
Measuring cell with sili‐
cone oil filling
Measuring cell with inert
oil for gauge pressure
measuring cells 1, 4, 16
and 63 bar
Measuring cell with inert
oil
Measuring cell with FDA-
compliant oil
Display
● Storage temperature
Climate class in accordance
with IEC 60721-3-4
Degree of protection accord‐
ing to IEC/EN 60529/UL50-E
Electromagnetic compatibili‐
ty
Interference emission and
interference immunity
Process medium conditions
● Process temperature
SITRANS P320/P420 (mA/HART)
Compact Operating Instructions, 06/2018, A5E38874562-AA
Observe the temperature class in hazardous areas.
-40 ... +85 °C (-40 ... +185 °F)
-40 ... +85 °C (-40 ...+185 °F)
-20 ... +85 °C (-4 ... +185 °F)
-10 ...+85 °C (14 ... +185 °F)
-20 ... +80 °C (-4 ... +185 °F)
-50 ... +85 °C (-58 ... +185 °F)
(for FDA-compliant oil: -20 ... + 85 °C
(-4 ... +185 °F))
4K4H
Enclosure with appropriate cable
gland
Enclosure with mounted M12 con‐
nector and/or lightning protection
Enclosure with mounted HAN con‐
nector
In accordance with EN 61326 and
NAMUR NE 21
IP66/Type 4X
IP68 (2 hours at 1.5 m)
IP66/Type 4X
IP65
Technical data
7.4 Operating conditions
83
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