Endress+Hauser Proline Prosonic Flow 93C, Руководство по эксплуатации

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Installation Proline Prosonic Flow 93C FOUNDATION Fieldbus
16 Hauser
3.2.7 Foundations, supports
For all nominal diameters, mount the sensor on a foundation of adequate load-bearing strength.
A0008751
Fig. 12: Correct support for large nominal diameters
3.2.8 Adapters
The sensor can also be installed in a pipe with a larger nominal diameter using appropriate adapters
in accordance with (E) DIN EN 545 (double-flange adapters). The resulting increase in flow velocity
improves accuracy if the fluid flows very slowly.
The chart below can be used to determine the drop in pressure caused by reducers and expanders:
"
Caution!
The chart only applies to liquids with a viscosity similar to that of water.
1. Determine the diameter ratio d/D.
2. From the chart, determine the pressure loss as a function of the flow velocity (after the
reduction) and the d/D ratio.
A0008743
Fig. 13: Pressure loss caused by adapters
D d
max. 4°
100
10
0.5
d / D
[mbar]
0.6 0.7 0.8 0.9
1 m/s
2 m/s
3 m/s
4 m/s
5 m/s
6 m/s
7 m/s
8 m/s
1