Siemens OCM III, Instruction Manual, Page: 77 / 112

H-FLUME *, P3 = 11
‘U’ parameters required *
U0 = maximum listed head, h
max
*
as developed by the U.S. Department of Agriculture, Soil Conservation Service.
**
obtain from manufacturer’s specifications.
Reference
RATIOMETRIC CALCULATION, P4 = 1
¤
For flows that can be calculated by the equation:
q = q
cal
x f(h/h
max
)/f(h
cal
/h
max
)
where : q = flow rate
q
cal
= flow rate at maximum head
f(h/h
max
) and f(h
cal
/h
max
) are determined by polynomial synthesis
¤
Refer to Operation \ Flow Calculation.
7ML19985AB01 OCM III 78