Hach 911 User Manual page 81

Working with Primary Devices
Submerged Probe
(Preferred Head Measurement Point)
FLOW
Top View
Upper Transition
Throat Lower Transition
Preferred Head Measurement Point
Small jump should occur here.
Water Surface
FLOW
Elevation View End View
"D"
Conduit Diameter
Downstream Depth
2
Upstream Depth
Figure 43 Leopold-Lagco Flume
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