Siemens SITRANS P - Page 31

Mounting on the closed container (no or little condensate formation)
*DVILOOHGQHJDWLYH
SUHVVXUHOLQH
3UHVVXUHWUDQVPLWWHU
UHIHUHQFHOLQH
0D[LPXPOHYHO
8SSHUUDQJHYDOXH
/RZHUUDQJHYDOXH
K
2
K
8
Formula
p
MA
= ρ · g · h
U
p
ME
= ρ · g · h
O
h
U
Lower 󹪝lling level p
LRV
Lower range value
h
O
Upper 󹪝lling level p
URV
Upper range value
p Pressure ρ Density of the measured medium in the container
g Acceleration due to gravity
When taking measurements in a closed container without or with little condensate formation,
the low pressure line is not 󹪝lled.
Lay the line in such a way that condensation pockets do not form. If required, you need to install
a condensation container below the low pressure line of the pressure transmitter.
The process connection on the low pressure side is a female thread
1
/
4
-18 NPT or an oval 󹪞ange.
Lay the line for the low pressure using a seamless steel tube 12 mm x 1.5 mm.
Installing/mounting
4.4 Installation (level)
SITRANS P320/P420
Compact Operating Instructions, 01/2021, A5E38874562-AC 31