Proline Promag 50P, 53P
18 Endress+Hauser
Inlet and outlet runs If possible, install the sensor well clear of fittings such as valves, T-pieces, elbows, etc. Compliance with the
following requirements for the inlet and outlet runs is necessary in order to ensure measuring accuracy:
• Inlet run ≥ 5 x Dia
• Outlet run ≥ 2 x Dia
F06-5xxxxxxx-11-00-00-xx-005
Adapters Suitable adapters to DIN EN 545 (double-flange junction sections) can be used to install the sensor in larger-
diameter pipes. The resultant increase in the rate of flow improves measuring accuracy with very slow-moving
fluids.
The nomogram shown here can be used to calculate the pressure loss caused by reducers and expanders.
The nomogram applies only to fluids of viscosity similar to water:
1. Calculate the ratio of the diameters d/D.
2. From the nomogram read off the pressure loss as a function of flow velocity (downstream from the reduc-
tion) and the d/D ratio.
F06-5xFxxxxx-05-xx-xx-xx-000
5 x Dia.
2 x Dia.
D
d
max. 8 °
1.45 (100)
0.14 (10)
0.5
d/D
psi [mbar]
0.6 0.7 0.8 0.9
3 ft/s
1 m/s
6 ft/s
2 m/s
10 ft/s
3 m/s
13 ft/s
4 m/s
16 ft/s
5 m/s
20 ft/s
6 m/s
23 ft/s
7 m/s
26 ft/s
8 m/s
0.014 (1)
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