Pulsar FlowCERT LITE, Instruction Manual

Page: 48 / 150

Page 40
Calculations
A
BSOLUTE
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
x
= exponent
1.50
Automatically
selected by
FlowCERT
LITE
Automatically
calculated,
dependent on
measurement,
flow and time
units chosen.
Cipolletti
(Trapezoidal)
Weir Q=KLh
x
Where:
Q =Flow
K=
K factor
L=crest length of weir
h=head
x
= exponent
1.50
Automatically
selected by
FlowCERT
LITE
Automatically
calculated,
dependent on
measurement,
flow and time
units chosen.
Venturi Flume Q=Kh
x
Where:
Q =Flow
K=
K factor
h=head
x
= exponent
1.50
Automatically
selected by
FlowCERT
LITE
Enter value of
K Factor (P718)
as required
Parshall Flume Q=Kh
x
Where:
Q =Flow
K=
K factor
h=head
x
= exponent
Automatically
calculated
dependent on
throat size
(P719) Automatically
calculated,
dependent on
throat size and
measurement,
flow and time
units chosen.
Leopold Lagco
Flume Q=KD
0.0953
h
x
Where:
Q =Flow
K=
K factor
D=pipe diameter
h=head
x
= exponent
1.55
Automatically
selected by
FlowCERT
LITE
Automatically
calculated,
dependent on
measurement,
flow and time
units chosen.