Pulsar FlowCERT LITE, Instruction Manual

Page: 49 / 150

Page
41
Exponent Type Formula Exponent K Factor
V-Notch Weir Q=Kh
x
Where:
Q =Flow
K=
K factor
h=head
x
= exponent
2.50
Automatically
selected by
FlowCERT
LITE
Automatically
calculated,
dependent on
measurement,
flow and time
units chosen.
Other Q=Kh
x
Enter value as
required Enter value as
required
Contracted
Rectangular
Weir (With End
Contractions) Q=K(L-0.2*h)h
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.
R
ATIOMETRIC
If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula: q = q
cal
(h/h
cal
)
X
Where: q = flowrate
q
cal
= flowrate at maximum head ( 705 )
h = head
h
cal
= maximum head ( P704 )
x = exponent (determined as in absolute calculation above)