33
Model BB4000 Controller Instruction Manual
3. In order to have an accurate flow measurement, the Flow Calculator must have re-
cently acquired the “Latest Inflow Rate”. Since this is only acquired while all pumps
are off, the station must periodically pump all the way down and turn off all pumps.
Therefore, Parameter P.47 is provided to set the “Delay Before Forcing On Another
Pump(s)”. When this delay expires, an additional pump or pumps are called to run
and the wet well is pumped down. After calling the first additional pump, there is a 4
minute delay before another is called.
4.
While attempting to update the value of the “Latest Inflow Rate”, if the level rises too
fast (faster than 1 foot in 15 seconds) with Parameter F.19 = 1, or faster than one
Level Probe Electrode spacing in 15 seconds with Parameter F.19 = 2 or 3, the logic
aborts the measurement and keeps the previously determined value.
13.4. Flow Calculator - Setup Parameters
p
araMeter
D
efault
V
alue
c
urrent
V
alue
S
etting
D
efinitionS
p.44
0
0 = Flow Calculator Disabled 1 = Flow Calculator Enabled
Note: All Registers that store Flow Data will be Reset to Zero if P.44 is set on 0.
p.45
2
Average Daily Inflow Total - Display Range
1 = 0 - 65,535 Gallons per Day
2 = 0 - 65,535 Thousand Gallons Per Day
Note: Parameter P.45 also sets the Display Range of the Daily Inflow Total (Day
1-7) read by SCADA at Registers 40086 - 40092.
p.46
79 Square
Feet
Surface Area of Wet Well Range: 3 - 999 Square Feet
p.47
30 Minutes
Delay Before Forcing On Another Pump(s) Range: 10 - 60 Minutes