14
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Econ FP
1.
Calculate the
Available Dose Time in Seconds.
The available dose time is the minimum time interval between the water meter
contact closures.
a.
60 Seconds
= Maximum System Flow Rate (spg)
Maximum System Flow Rate (gpm)
b.
Maximum System Flow Rate (spg)
Water Meter’s contacts per gallon (cpg)
*
=
Available Dose Time (sec.)
*
Refer to the water meter model to confirm the contact rate (cpg).
2.
Calculate the
Pump Operating Time in Seconds.
Pump Output Requirement (gpd) x Available Dose Time (sec.)
=
Pump Operating
Pump’s Maximum Output (gpd)
Time (sec.)
PUMP OPERATING TIME EXCEEDING AVAILABLE DOSE
TIME MAY LEAD TO DOSING ERRORS.
To reduce operating time, select a pump with
a higher output or use a stronger solution strength.
3.
Calculate the
Pump Operating Time Percentage.
Reference the chart to find the pump’s maximum operating time for the formula below.
Pump Operating Time (sec.)
x 100
=
Pump Operating Time Percentage
Maximum Pump Operating Time (sec.)
**
**
Value can only be 1, 5, 10, 20, or 60.
Seconds Mode
MAXIMUM Pump Operating
Time in Seconds
1 SECOND
1.0
5 SECONDS
5.0
10 SECONDS
10.0
20 SECONDS
20.0
60 SECONDS
60.0
PROGRAM PUMP SETTINGS
SECONDS MODE
(dry contact signal)