Siemens 7ML19985AB01 instruction manual Universal Area X VELOCITY, P3 =, Typical open channel

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 (Aeven) and area (Aodd) 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 (A2n-2,A2n-1) generally being at maximum head .

‘U’ parameters required *	‘U’ parameters calculated **
U0 = number of data points (n, 4 to 16)	U1 = area (h)
Aeven = head
Aodd = area

*obtain from manufacturer’s specifications.

**calculated by OCM-3. May be viewed by accessing ‘U’ parameter.

e.g. typical open channel transducer *

*The transducer must be above the maximum head by at least the blanking value, P47.

7ML19985AB01 OCM III 96