MADDALENA ElecTo Bulk, Instructions For Installation, Use And Maintenance Manual

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EN
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WARNING!
Sensitivity class in installation conditions: H U3-D0, V U10-D5
For horizontal installations upstream, it is necessary to have a linear section that
is at least 3 times the diameter of the meter (H U3), while downstream it is irrel-
evant (D0).
For vertical installations upstream, it is necessary to have a linear section that is
at least 10 times the diameter of the meter (V U10), while downstream it must be
5 times the diameter (D5).
If the U and/or D letters are followed by the letter S, install a flow straightener.
H U3-D0
U3 = 50 mm x 3
= 150 mm
U10 = 50 mm x 10
= 500 mm
D5 = 50 mm x 5
= 250 mm
D0 = 0
DN50 DN50
150 mm
500 mm
250 mm
V U10-D5