Siemens SITRANS P DS III - Page 56

Installing / mounting
4.5 "Remote seal" installation
SITRANS P DS III with PROFIBUS PA
56 Operating Instructions, 06/2013, A5E00053276-07
Installation types for absolute pressure measurements (closed containers)
Installation type C
1
Start of scale value:
p
MA
= p
start
+ ρ
oil
* g * H
1
Full
-scale value:
p
ME
= p
end
+ ρ
oil
* g * H
1
Installation type C
2
Pressure transmit
ter for absolute pressure always below the measuring point: H
1
≥ 200 mm
(7.9 inch)
Key
p
MA
Start of scale value
p
ME
Full-scale value
p
start
Start of scale pressure
p
end
Full scale pressure
ρ
oil
Density of the filling oil in the capillary line of the remote seal
g
Acceleration due to gravity
H
1
Distance between the container flange and the pressure transmitter