
+
+
+
X
+
R
Installation type B: Pressure transmitter
below the measuring point
Start of scale value:
p
LRV
= ρ
FL
* g * H
U
+ ρ
oil
* g * H
1
Full-scale value:
p
URV
= ρ
FL
* g * H
O
+ ρ
oil
* g * H
1
H
1
≤ 7 m (23 ft); with halocarbon oil as the filling liquid, only H
1
≤ 4 m(13.1 ft)
Key
p
LRV
Start of scale value
p
URV
Full-scale value
ρ
FL
Density of the process medium in the container
ρ
oil
Density of the filling oil in the capillary line of the remote seal
g
Acceleration due to gravity
H
U
Lower filling level
H
O
Upper filling level
H
1
Distance container flange to pressure transmitter
For absolute pressure measurements (vacuum), install the pressure transmitter at least at the
height of the remote seal or below it (see installation types C).
Installing/mounting
5.4 Installation with remote seal
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
57
Содержание SITRANS P
Страница 10: ...Table of contents SITRANS P320 P420 with 4 to 20 mA HART 10 Operating Instructions 11 2019 A5E44852162 AC ...
Страница 272: ...Abbreviations SITRANS P320 P420 with 4 to 20 mA HART 272 Operating Instructions 11 2019 A5E44852162 AC ...
Страница 280: ...Index SITRANS P320 P420 with 4 to 20 mA HART 280 Operating Instructions 11 2019 A5E44852162 AC ...