Siemens OCM III Instruction Manual page 78

H-FLUME
transducer *
plan
front
For rated flows under free flow conditions, the head is measured at a point downstream
from the flume entrance. Refer to the following table.
Flume Size
D (feet)
0.5
0.75
1.0
1.5
2.0
2.5
3.0
4.5
* The transducer must be above the maximum head by at least the
blanking value, P47.
7ML19985AB01
point of measurement
Point of Measurement
cm
4.7
6.7
9.1
13.5
17.9
22.5
27.2
40.5
OCM III
side
inches
1.88
2.69
3.63
5.38
7.19
9.00
10.88
16.19
79