Endress+Hauser Proline Promass 83, Руководство по эксплуатации

Страница: 15 / 118

Proline Promass 83 FOUNDATION Fieldbus 3 Installation
Hauser 15
The proposed configuration in Fig. 6, however, permits installation in a vertical pipeline. Pipe
restrictors or the use of an orifice 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. 6: Installation in a vertical pipe (e.g. for batching applications)
1 Supply tank
2 Sensor
3 Orifice, pipe restrictions (see Table)
4 Valve
5 Batching 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.
Promass F, M, E / DN 8 15 25 40 50 80
1)
100
2)
150
2)
250
2)
Ø orifice / 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 1 2 4
Ø orifice / pipe restriction 0.8 mm 1.5 mm 3.0 mm
Promass H, I / DN 8 15 15
1)
25 25
1)
40 40
1)
50
Ø orifice / 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
1
2
3
4
5