Pulsar Measurement Ultra 3 - Palmer Bowlus and H-Flume Calculations

ULTRA 3 INSTRUCTION MANUAL
94
FLUME SIZE-DIM A (P710)
POINT OF MEASUREMENT
cm
feet
cm
inches
15.25
0.5
4.7
1.88
23.00
0.75
6.7
2.69
30.05
1.0
9.1
3.63
45.70
1.5
13.5
5.378
61.00
2.0
17.9
7.19
76.20
2.5
22.5
9.00
91.45
3.0
27.2
10.88
137.15
4.5
40.5
16.19
V-notch angle weirs, the head is measured upstream of the weir plate at a
minimum distance of 3 times maximum head to ensure the surface of the
liquid is not affected by turbulence or drawdown. See Exponential devices,
above, for further details.
Palmer Bowlus and H-Flume Calculations
Absolute
If the flow calculation is to be absolute P702 = 1 the flow will be calculated
using the formula: q = f(h)
Where:
q = flowrate
f = is an 8
th
degree polynomial solution for h (head)
Ratiometric
If the flow calculation is to be ratiometric P702 = 2 the flow will be
calculated using the formula: q= q
cal
f(h)/f(h
cal
)
Where:
q = flowrate
q
cal
= flowrate at maximum head P705
f(h) = a polynomial solution for h (head)
f(h
cal
) = a polynomial solution for h
cal
(maximum head)