S1 relay used as a TIMER
S1 can be configured as a timer by
setting a start time and duration from 1
minute to 4 hours. Days are individually
selected for complete flexibilty. If selected
as a timer, setpoint and possible timed
relay operations are automatically dis-
abled. Equally if the timer is disabled a
previous configured setpoint is restored.
S2 as ALARM RELAY.
For a simple alarm setup use this option as only one relay output is
used. The normal setpoint is replaced by a low and high setpoint. Low
alarm is set from 0pH to 1pH below high or high can be set from pH14 to
1pH above low.
S3 / S4 with DELAY
DELAY only operates when normal setpoint for S3 and S4 is selected.
This feature will eliminate possible hunting between metering pumps or
dosing valves when treating effluent with an acid and alkali neutraliser.
A time delay from 1 to 5 minutes can be selected.
PAGE 18
DPH-64 Instruction manual
