Installation
Proline Promag L 400 HART
22
Hauser
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 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°
A0016359
6.1.3
Special mounting instructions
Weather protection cover
►
To ensure that the optional weather protection cover can be easily opened, maintain the
following minimum head clearance: 350 mm (13.8 in)
6.2
Mounting the measuring device
6.2.1
Required tools
For transmitter
• Torque wrench
• For wall mounting:
Open-ended wrench for hexagonal screw max. M5
• For pipe mounting:
– Open-ended wrench AF 8
– Phillips head screwdriver PH 2
• For turning the transmitter housing (compact version):
– Phillips head screwdriver PH 2
– Torx screwdriver TX 20
– Open-ended wrench AF 7
