Rectangular Weir (Contracted), P3 = 8 - Siemens OCM III Instruction Manual

RECTANGULAR WEIR (CONTRACTED), P3 = 8

'U' parameters required *
U0 = crest width b
*
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 = K x (b - 0.2h) x h
where : q = flow rate
h = head
K = constant
RATIOMETRIC CALCULATION, P4 = 1
For flows that can be calculated by the equation:
q = q x (b - 0.2h)/(b - 0.2h
cal
where : q = flow rate
q = flow rate at maximum head
cal
h = head
h = maximum head
cal
¤
Refer to Operation \ Flow Calculation.
7ML19985AB01
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1.5
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) x (h/h )
cal cal
OCM III
2.5
72