Mounting On The Container - Siemens SITRANS P Operating Instructions Manual

Installing/mounting
5.3 Installation (level)
Procedure
To install the pressure transmitter for level, proceed as follows:
1. Attach the seal to the container's mating flange.
Ensure that the seal is centrally positioned and that it does not restrict the movement of the
flange's seal diaphragm in any way. Otherwise, the seal of the process connection is not
guaranteed to be tight.
2. Screw on the pressure transmitter's flange.
3. Observe the installation position.
5.3.1

Mounting on the container

Mounting on open container
A line is not required when taking measurements in an open container since the negative side
is connected with the atmosphere.
Ensure that no dirt enters the open connection ports.
● Use, for example, threaded plug with vent valve 7MF4997-1CP.
Measurement assembly on an open container
h
U
h
O
p
52
Lower filling level
Upper filling level
Pressure
Formula:
Lower range value: p
Upper range value: p
+
Δp Lower range value
MA
Δp Upper range value
ME
ρ Density of the measured medium in
the container
g Acceleration due to gravity
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
= ρ · g · h
MA U
= ρ · g · h
ME O