Endress+Hauser Prosonic S FMU90 - Triangular Weirs According to the French Standard NFX

Appendix
196
13.1.13 Triangular weirs according to the French standard NFX
L00-FMU90xxx-05-00-00-xx-011
!
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 α H
max
[mm] Q
max
[m
3
/h]
NFX V-Weir 30 30° 600 375,9
NFX V-Weir 45 45° 600 573,1
NFX V-Weir 60 60° 600 793,1
NFX V-Weir 90 90° 600 1376,7
kk
45°
BD
≥ 3H
max
≥ 2H
max
H
max
≥ 2H
max
k3mm ≈
α