Proline Promag 55S
Hauser
17
Adapters
Suitable adapters to DIN EN 545 (double-flange reducers) 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 cross-section reduction.
!
Note!
The nomogram applies 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 fluid velocity (
downstream
from the
reduction) and the d/D ratio.
A0003213
Pressure loss due to adapters (for pressure losses in US units, please contact 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 meas-
uring accuracy.
• Inlet run
≥
5 × DN
• Outlet run
≥
2 × DN
A0003210
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
D
d
max. 8°
5 x DN
2 x DN
Содержание Proline Promag 55S
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