Universal Area X Velocity, P3 = 20 - Siemens OCM III Instruction Manual

UNIVERSAL AREA X VELOCITY, P3 = 20

Arbitrary area is typically used when the primary element and/or its flow do not fit any
of the primary elements covered by P3. There is no user difference between absolute
and ratiometric calculations P4.
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
A = head
even
A = area
odd
*
obtain from manufacturer's specifications.
**
calculated by OCM-3. May be viewed by accessing 'U' parameter.
e.g. typical open channel
* The transducer must be above the maximum head by at least the
blanking value, P47.
7ML19985AB01
'U' parameters calculated **
U1 = area (h)
(n, 4 to 16)
transducer *
OCM III
) and area (A
even odd
,A ) generally being
2n-2 2n-1
)
96