SIMPLE EXPONENTIAL DEVICES, P3 = 0
TYPICAL LEOPOLD LAGCO
For rated flows under free flow conditions, the head is measured at a point upstream
referenced to the beginning of the converging section. Refer to the following table.
converging
side
front
0
head
transducer *
diverging
plan
Q
throat
point of measurement
Flume Size Point of Measurement
(pipe dia. in inches) mm inches
4 - 12 25 1.0
15 32 1.3
18 38 1.5
21 44 1.8
24 51 2.1
30 64 2.5
36 76 3.0
42 89 3.5
48 102 4.0
54 114 4.5
60 127 5.0
66 140 5.5
72 152 6.0
* The transducer must be above the maximum head by at least the
blanking value, P47.
7ML19985AB01 OCM III 57
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