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Proline Promag L 400
Hauser
27
Observe the following inlet and outlet runs to comply with accuracy specifications:
• Inlet run ≥ 5 × DN
• Outlet run ≥ 2 × DN
5 × DN
³
³
2 × DN
A0016275
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:
• Calculate the ratio of the diameters d/D.
• From the nomogram read off the pressure loss as a function of flow velocity (downstream from
the reduction) and the d/D ratio.
The nomogram only applies to liquids with a viscosity similar to that of water.
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
Length of connecting cable
To ensure correct measuring results when using the remote version,
observe the maximum permitted cable length L
max
. This length is determined by the conductivity of
the fluid.
If measuring liquids in general: 5 µS/cm
Содержание Promag L 400
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