Proline Promag W 800 Mounting procedure
Endress+Hauser 29
• If the compact version of the device is insulated at low temperatures, the insulation must
also include the device neck.
• Protect the display against impact.
• Protect the display from abrasion by sand in desert areas.
• Protect the pressure sensor from icing.
Display guard available as an accessory → 94.
System pressure
Installation near pumps → 24
Vibrations
Installation in event of pipe vibrations → 25
Adapters
The sensor can also be installed in larger-diameter pipes with the aid of suitable adapters
according to DIN EN 545 (double-flange reducers). 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 only applies to liquids with a viscosity similar to that of 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.
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°
A0029002
Length of connecting cable
To obtain correct measurement results, observe the permitted connecting cable length of
L
max
. This length is determined by the conductivity of the medium.
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