Proline Promag 51
Installation
Hauser
17
3.2.5
Foundations, supports
If the nominal diameter is DN
350, mount the transmitter on a foundation of adequate load-
bearing strength.
"
Caution!
Risk of damage.
Do not support the weight of the sensor on the metal casing: the casing would buckle and damage
the internal magnetic coils.
A0003209
Fig. 15:
Correct support for large nominal diameters (DN
350)
3.2.6
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 flow velocity (
downstream
from the reduction) and the d/D ratio.
A0003213
Fig. 16:
Pressure loss due to adapters
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°
