3 Installation Proline Prowirl 72 FOUNDATION Fieldbus
12 Endress + Hauser
3.2.3 Orientation
The device can be installed basically in any orientation. Please consider the following, however
(Fig. 6):
• In the case of liquids, there should be upward flow in vertical pipes to avoid partial pipe filling (see
orientation A).
• The arrow on the meter body has to point in flow direction.
• In order to make sure that the maximum ambient temperature (see Page 67) is not exceeded, we
recommend the following orientations:
– In the case of hot fluids (e.g. steam or fluid temperature 200 °C/ 392 °F), select orientation
C or D.
– Orientations B and D are recommended for very cold fluids (e.g. liquid nitrogen).
"
Caution!
• If fluid temperature is 200 °C (392 °F), orientation B is not permitted for the wafer version
(Prowirl 72 W) with a nominal diameter of DN 100 (4") and DN 150 (6").
• In case of vertical orientation and downward flowing liquid, the piping has always to be
completely filled.
A0001869
Fig. 6: Possible orientations of the device
High fluid temperature:
– horizontal piping: orientation C or D
– vertical piping: orientation A
Low fluid temperature:
– horizontal piping: orientation B or D
– vertical piping: orientation A