Orientation; Inlet And Outlet Runs - Endress+Hauser Proline Prosonic Flow 91 Operating Instructions Manual

Installation
12
3.2.3

Orientation

Vertical orientation
Recommended orientation with upward direction of flow (View A). Entrained solids sink down.
Gases rise away from the measuring sensor when fluid is not flowing. The piping can be completely
drained and protected against buildup.
Horizontal orientation
In the recommended installation range in a horizontal installation position (View B), gas and air
accumulation at the pipe cover and problematic buildups at the bottom of the pipe have a minor
influence on the measurement.
A
Fig. 6: Orientation
A Vertical
B Horizontal
C Recommended installation range max. 120°
3.2.4

Inlet and outlet runs

If possible, install the sensor well clear of assemblies such as valves, T-pieces, elbows, etc. If several
flow obstructions are installed, the longest inlet or outlet run must be considered. Compliance with
the following requirements for the inlet and outlet runs is recommended to ensure measuring
accuracy.
Fig. 7: Inlet and outlet runs (top view)
1 Valve (2/3 open)
2 Pump
3 Double bends
C
³ 15 x DN
³ 20 x DN
1
³ 20 x DN
2
³ 15 x DN
3
Proline Prosonic Flow 91
C
B
³ 3 x DN
Endress+Hauser
a0001105
A0013079