Vega VEGAPULS 64 - Page 28

28
4 Mounting
VEGAPULS 64 • Two-wire 4 … 20 mA/HART
51141-EN-210219
h
max
≥ 2 x h
max
90°
4
3 ... 4 h
max
90°
2 3
1
Fig. 26: Flow measurement with rectangular ume: h
max.
= max. lling of the
rectangular ume
1 Overfall orice (side view)
2 Upstream water
3 Tailwater
4 Overfall orice (view from tailwater)
2
3 ... 4 x h
max
90°
h
max
1
B
Fig. 27: Flow measurement with Khafagi-Venturi ume: h
max.
= max. lling of the
ume; B = tightest constriction in the ume
1 Position sensor
2 Venturi ume
Rectangular overfall
Khafagi-Venturiume