Siemens SITRANS P DS III Operating Instructions Manual page 55

Installation type for gauge pressure and level measurements (open containers)
Installation type A
Pressure transmitter above the
measuring point
Installation type B
Pressure transmitter below the
measuring point
H ≤ 7 m (23 ft); with halocarbon oil as the filling liquid, only H
1
Key
p
MA
p
ME
ρ
FL
ρ
oil
g
H
U
H
O
H
1
For absolute pressure measurements (vacuum), install the measuring device at least at the
height of the remote seal or below it (see installation types C).
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08
Start of scale value:
p
MA
Full-scale value:
p
ME
Start of scale value:
p
MA
Full-scale value:
p
ME
Start of scale value
Full-scale value
Density of the process medium in the container
Density of the filling oil in the capillary line of the remote seal
Acceleration due to gravity
Lower filling level
Upper filling level
Distance between the container flange and the pressure transmitter
4.5 "Remote seal" installation
= ρ * g * H + ρ * g * H
FL U oil
= ρ * g * H + ρ * g * H
FL O oil
= ρ * g * H - ρ * g * H
FL U oil
= ρ * g * H - ρ * g * H
FL O oil
≤ 4 m(13.1 ft)
1
Installing / mounting
1
1
1
1
55