Siemens SITRANS P DS III Operating Instructions Manual page 57

Note
Effects of temperature
Keep the following instructions in mind in order to minimize keep the effects of temperature
in remote seal measuring systems with the differential pressure measuring device:
Install the device such that the positive and negative sides are symmetrical as far as ambient
effects, especially ambient temperatures, are concerned.
Installation type for differential pressure and flow rate measurements
Installation type D
Key
p
MA
p
ME
p
start
p
end
ρ
oil
g
H
V
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08
Start of scale value:
p
Full-scale value:
p
Start of scale value
Full-scale value
Start of scale pressure
Full scale pressure
Density of the filling oil in the capillary line of the remote seal
Acceleration due to gravity
Gland distance
4.5 "Remote seal" installation
= p - ρ * g * H
MA start oil V
= p - ρ * g * H
ME end oil V
Installing / mounting
57