Operating conditions for gauge pressure and absolute pressure (from the gauge pressure series)
● 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 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
Cell Pressure Temperature range
Measuring cell with sili‐
cone oil filling
-40 … +100 °C (-40 … +212 °F)
Measuring cell with inert
oil (gauge pressure)
250 mbar -40 … +100 °C (-40 … +212 °F)
1 bar/100 kPa/14.5 psi -40 … +100 °C (-40 … +212 °F)
4 bar/400 kPa/58 psi -40 … +100 °C (-40 … +212 °F)
16 bar/1.6 MPa/232 psi -40 … +100 °C (-40 … +212 °F)
63 bar/6.3 MPa/914 psi -40 … +100 °C (-40 … +212 °F)
160 bar/16 MPa/2321 psi -20 … +100 °C (-4 … +212 °F)
400 bar/40 MPa/5802 psi -20 … +100 °C (-4 … +212 °F)
700 bar/70 MPa/10152 psi -20 … +100 °C (-4 … +212 °F)
Measuring cell with inert
oil (absolute pressure)
-20 … +100 °C (-4 … +212 °F)
Measuring cell with FDA-
compliant oil
-10 ... +100 °C (14 ... +212 °F)
1)
Only for non-Ex devices, not approved for use in Ex areas (ATEX, IECEx, FM, CSA)
Operating conditions for gauge pressure and absolute pressure with
front-flush diaphragm
Ambient conditions
● Ambient temperature
Note Observe the temperature class in hazardous areas.
Technical data
13.5 Operating conditions
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC 229
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