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English
13
17.0 Set the dosing OnTime and OTime
A dosing cycle includes the OnTime and the OffTime that the peristaltic pump
doses the system for. The arrow symbol on the display will ash during the dose
cycle. Adjustments for OnTime and OffTime will be required so that three dosing
cycles only change the pH value by 0.1 pH.
• ‘OnTime’ is the length of time the peristaltic pump will dose for. The ‘OnTime’
can be set from 1 to 60 seconds.
• ‘OffTime’ is the delay time between each dose. This gives the system time to
mix the pH stock solution thoroughly, so the pH controller can measure the
changes being made before needing to dose again. The ‘OffTime’ can be set
from 1 to 60 minutes.
• Start with a long ‘OffTime’ and adjust back as you go. The more thorough the
mixing in the tank, the shorter the ‘OffTime’ can be.
To set the OnTime value:
Press ‘menu’.
Press ‘∨’ to nd ‘OnTime’. Press ‘enter’.
Press ‘∨’ or ‘∧’ to select the dosing on time in
seconds. Press ‘enter’ to save.
To set the OffTime value:
Press ‘∨’ to nd ‘OffTime’. Press ‘enter’.
Press ‘∨’ or ‘∧’ to select the dosing off time in
minutes. Press ‘enter’ to save.
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