FlowCERT

Calculations
ABSOLUTE
If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula (s) as follows:
Exponent Type Formula Exponent K Factor
Suppressed
Rectangular
Weir
(Without End
Contractions)
Q=KLh x
Where:
Q =Flow
K=K factor
L=crest length of weir
h=head
=exponent
1.50
Automatically
selected by
FlowCERT
Automatically
calculated,
dependent on
measurement,
flow and time
units chosen.
Cipolletti
(Trapezoidal)
Weir
Venturi Flume
Parshall Flume
Leopold Lagco
Flume
Q=KLh x
Where:
Q =Flow
K=K factor
L=crest length of weir
h=head
x =exponent
Q=Kh x
Where:
Q =Flow
K=K factor
h=head
x =exponent
Q=Kh x
Where:
Q =Flow
K=K factor
h=head
x =exponent
Q=KD 0.0953 h x
Where:
Q =Flow
K=K factor
D=pipe diameter
h=head
x =exponent
1.50
Automatically
selected by
FlowCERT
1.50
Automatically
selected by
FlowCERT
Automatically
calculated
dependent on
throat size
(P719)
1.55
Automatically
selected by
FlowCERT
Automatically
calculated,
dependent on
measurement,
flow and time
units chosen.
Enter value of
K Factor (P718)
as required
Automatically
calculated,
dependent on
throat size and
measurement,
flow and time
units chosen.
Automatically
calculated,
dependent on
measurement,
flow and time
units chosen.
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