Endress+Hauser Prosonic S FMU90 - Constricted Rectangular Weirs According to French Standard NFX

Appendix
192
13.1.9 Constricted rectangular weirs according to French standard NFX
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!
Note!
In the "width" parameter, the width of the weir can be adjusted. The corresponding change of the
flow curve is automatically performed by the Prosonic S.
!
Note!
After selecting the type of weir, Q
max
can be adjusted to the flow conditions. Q
max
defines the flow
at which the output current is 20 mA.
Type of weir B [mm] H
max
[mm] Q
max
[m
3
/h]
NFX Rect WThr 2H 200 120 53,5
NFX Rect WThr 3H 300 150 111,7
NFX Rect WThr 4H 400 240 299,1
NFX Rect WThr 5H 500 270 445,8
NFX Rect WThr 6H 600 300 626,2
NFX Rect WThr 8H 800 450 1527,8
NFX Rect WThr T0 1000 600 2933,8
kk
45°
BD
≥ 3H
max
≥ 2H
max
H
max
B
≥ 2H
max
k3mm ≈