PH / ORP OUT OF RANGE
The integrated pH/ORP control system has two ALARM lights which come on whenever a pH value of less than 6.5 "LOW" [23] or
more than 8.5 "HIGH" [16] is detected, or ORP falls outside the 650 mV "LOW" [25] - 850 mV "HIGH" [21] range. When the
regulator detects an active pH alarm, it opens the control output of the dosage pump (pH).
18