Siemens SITRANS LR150 - Page 27

Installing/mounting
4.3Measurement setup - Flow
Rectangular overfall
1
Overfall orifice (side view)
2
Upstream water
3
Tailwater
4
Overfall orifice (view from tailwater)
Figure4.10 Flow measurement with rectangular flume: h
max.
= max. filling of the rectangular
flume
Khafagi-Venturi flume
1
Position transmitter
2
Venturi flume
Figure4.11 Flow measurement with Khafagi-Venturi flume: h
max.
= max. filling of the flume; B =
tightest constriction in the flume
18
SITRANS LR150
Operating Instructions, 08/2020, A5E50352155