Mounting location
Verify that the mounting location meets the following conditions:
• Accessible
• Close to the measuring point
• Vibration-free
• Within the permitted ambient temperature values
Protect the pressure transmitter from:
• Direct heat radiation
• Sudden temperature uctuations
• Heavy contamination
• Mechanical damage
• Direct sunlight
Procedure
1. Select the arrangement of the pressure transmitter depending on the aggregate state of the
medium.
Gas Vapor or liquid
Above the pressure sampling point Below the pressure sampling point
Lay the pressure line with a constant gradient to
the pressure sampling point, so that any conden‐
sation produced can drain in the main line and
thereby avoid corruption of the measured values.
Lay the pressure line with a constant gradient to
the pressure sampling point so that any gas pock‐
ets can escape in the main line.
2. Attach the pressure transmitter to the process connection.
Use an appropriate tool (e.g. open-ended wrench with width across ats 36). Otherwise, the
measuring cell may be damaged.
3. Turn only on the key area above the process connection.
Caution: If you turn the pressure transmitter on the housing, the measuring cell may be
damaged.
Installing/mounting
4.2 Installation (except level)
SITRANS P320/P420
26 Compact Operating Instructions, 01/2021, A5E38874562-AC
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