Operating conditions for gauge pressure and absolute pressure with
flush-mounted diaphragm
Electromagnetic compatibili‐
ty
● Interference emission and
interference immunity
In accordance with EN 61326 and
NAMUR NE 21
Process medium conditions
Process temperature
1)
● Measuring cell with
silicone oil filling
-40 … +150°C (-40 … +302 °F)
-40 … +200°C (-40 … +392 °F) with
cooling extension
● Measuring cell with inert oil
-20 … +100 °C (-4 … +212 °F)
● Measuring cell with FDA-
compliant oil
-10 … +150°C (14 … 302 °F)
-10 … +200°C (14 … 392 °F) with
cooling extension
1)
Observe the temperature limits in the process connection standards (e.g. DIN 32676 and DIN 11851) for the maximum
process temperature for flush-mounted process connections.
Operating conditions for gauge pressure and absolute pressure (from
the differential pressure series), differential pressure and flow rate
Installation conditions
● Installation instruction
Any
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
30 bar (435 psi),
PN420
● -20 … +85 °C (-4 … +185 °F)
● For flow: -20 … +85 °C (-4 …
+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)
(with 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
Technical data
8.4 Operating conditions
SITRANS P320/P420 with 4 to 20 mA/HART
Compact Operating Instructions, 09/2018, A5E38874562-AB 91
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