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Mounting location
10
Installation
Entrained air or gas bubbles in the measuring tube can result in an increase in measuring errors.
Therefore, avoid the following mounting locations in the pipe installation:
• Highest point of a pipeline. Risk of air accumulating.
• Directly upstream of a free pipe outlet in a vertical pipeline.
Mounting location
Notwithstanding the above, the installation proposal below permits installation in an open vertical
pipeline. Pipe restrictions or the use of an orifice with a smaller cross-section than the nominal
diameter prevent the sensor running empty while measurement is in progress.
Installation in a down pipe (e.g. for batching applications)
1
Supply tank
2
Sensor
3
Orifice plate, pipe restriction (see Table following page)
4
Valve
5
Batching tank
DN
[mm]
8
15
25
40
50
80
1
2
3
4
5
⌀ Orifice plate, pipe restriction
[in]
[mm]
³⁄₈
6
½
10
1
14
1½
22
2
28
3
50
Proline Promass 40E
a0003605
a0003597
[in]
0.24
0.40
0.55
0.87
1.10
2.00
Endress+Hauser
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