Siemens OCM III, Instruction Manual, Page: 81 / 112

RECTANGULAR AREA X VELOCITY, P3 = 13
‘U’ parameters required * ‘U’ parameters calculated **
U0 = channel width B U1 = area (h)
*obtain from manufacturer’s specifications.
**
calculated by OCM-3. May be viewed by accessing ‘U’ parameter.
Reference
ABSOLUTE CALCULATION, P4 = 0
¤
For flows that can be calculated by the equation:
q = 1/1000 x B x h x V
where : q = flow rate in l/sec
B = channel width in cm
h = head in cm
V = velocity in cm/sec
RATIOMETRIC CALCULATION, P4 = 1
¤
For flows that can be calculated by the equation:
q = q
cal
x A/A
cal
x v/v
cal
where : q = flow rate
q
cal
= flow rate at maximum head
h = head
h
cal
= maximum head
v = velocity
v
cal
= velocity at maximum head
¤
Refer to Operation \ Flow Calculation.
7ML19985AB01 OCM III 82