Proline Promass 83 PROFIBUS DP/PA Installation
Endress+Hauser 17
The proposed configuration in the following diagram, however, permits installation in a vertical
pipeline. Pipe restrictors or the use of an orifice plate with a smaller cross-section than the nominal
diameter prevent the sensor from running empty during measurement.
F06-xxxxxxxx-11-00-00-xx-002
Fig. 7: Installation in a vertical pipe (e.g. for batching applications)
1Supply tank
2Sensor
3 Orifice plate, pipe restrictions (see Table)
4Valve
5Batching tank
System pressure
It is important to ensure that cavitation does not occur, because it would influence the oscillation
of the measuring tube. No special measures need to be taken for fluids which have properties similar
to water under normal conditions.
In the case of liquids with a low boiling point (hydrocarbons, solvents, liquefied gases) or in suction
lines, it is important to ensure that pressure does not drop below the vapour pressure and that the
liquid does not start to boil. It is also important to ensure that the gases that occur naturally in many
liquids do not outgas. Such effects can be prevented when system pressure is sufficiently high.
Consequently, it is generally best to install the sensor:
• downstream from pumps (no danger of vacuum),
• at the lowest point in a vertical pipe.
1
2
3
4
5
Promass F, M, E / DN 81525405080
1)
100
2)
150
2)
250
2)
∅ Orifice plate, pipe restriction 6 mm 10 mm 14 mm 22 mm 28 mm 50 mm 65 mm 90 mm 150 mm
1) Promass F, M only
2) Promass F only
Promass A / DN 124
∅ Orifice plate, pipe restriction 0.8 mm 1.5 mm 3.0 mm
Promass H, I / DN 81515
1)
25 25
1)
40 40
1)
50
∅ Orifice plate, pipe restriction 6 mm 10 mm 15 mm 14 mm 24 mm 22 mm 35 mm 28 mm
1) DN 15, 25, 40 “FB” = Full bore versions of Promass I
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