Siemens 7ML19985AB01 Manuel D’Utilisation
UNIVERSAL HEAD vs FLOW, P3 = 12
The flow curve is characterized by entering the head (A
even
) and flow (A
odd
)
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
point (A0,A1) generally being at 0 head and the last point (A
2n-2
,A
2n-1
) generally being
at maximum head .
‘U’ parameters required *
U0 = number of data points
(n, 4 to 16)
A
even
= head
A
odd
= flow rate
*
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)/f(h
cal
)
where :
f(h) and f(h
cal
) are polynomials based on interpolation of data points
¤
Refer to Operation \ Flow Calculation.
7ML19985AB01
OCM III
80