Siemens SITRANS P320 Compact Operating Instructions page 34

Installing/mounting
4.4 Installation (level)
Mounting on closed container (heavy condensate formation)
Formula
P
MA
P
MA
h
U
h
O
h
V
p
When taking measurements in a closed container with strong condensate formation, you must
fill the low pressure line (mostly with the condensate of the measured medium) and install a
condensate pot.
Lock the device using the 2-way valve manifold 7MF9017-..A.
To compensate the liquid column on the low pressure side, reset the zero point.
34
= g · (hU · ρ- hV · ρ')
= g · (hO · ρ- hV · ρ')
Lower filling level
Upper filling level
Gland distance
Pressure
'
-
p Lower range value
LRV
p Upper range value
URV
ρ Density of the measured medium in the container
ρ ' Density of fluid in the low pressure line corresponds to the
prevailing temperature there
g Acceleration due to gravity
Compact Operating Instructions, 09/2021, A5E38874562-AD
SITRANS P320/P420