Universal Head Vs. Flow, P3 =12 - Siemens OCM III Instruction Manual

UNIVERSAL HEAD vs FLOW, P3 = 12
The flow curve is characterized by entering the head (A
ordinates for the number of data points (n, 4 to 16) over the flow range. The first
point (A0,A1) generally being at 0 head and the last point (A
at maximum head .
'U' parameters required *
U0 = number of data points
*
obtain from manufacturer's specifications.
Reference
RATIOMETRIC CALCULATION, P4 = 1
For flows that can be calculated by the equation:
q = q x f(h)/f(h )
cal cal
where : f(h) and f(h
¤
Refer to Operation \ Flow Calculation.
7ML19985AB01
(n, 4 to 16)
A = head
even
A = flow rate
odd
¤
) are polynomials based on interpolation of data points
cal
OCM III
) and flow (A
even odd
,A ) generally being
2n-2 2n-1
)
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