The DPH-64 features 6 relay outputs with a multitude of configurations
possible to make this instrument suitable for almost every installation
where pH, ORP, temperature control or timer output is required. Default
label names for these outputs are S1, S2, S3, S4 and P1, P2. The DPH-64
is shipped with its basic setup of all four relays set point controlled for up
or down dosing. All other features are ‘hidden’ when scrolling through the
software setup. The appropriate setup window only appears once a
feature is enabled. Scrolling through a setup is therefore much easier to
follow.
Extended features possible are:
All relays linked with the real time clock to operate only at programmed
times.
S1 operating as timer output starting in real time and selected duration.
(biocide dosing etc.)
S2 used as an alarm with separate programmable high, low alarm set
points.
Time delay between S3 & S4 to avoid overshoot when dosing acid and
alkaline simultaneously
S3 and S4 used in proportional mode with adjustable gradient of
pulsing.
S3 and S4 linked to temperature with programmable temperature
setpoint and deadband.
The 4-20mA current output configured for set point control. Used with
a current signal controlled pump.
P1 and P2 are used with dosing pumps requiring a trigger pulse input.
Additional features
Temperature compensation is set for 20
o
C by default. This can be
changed in the configuration program from 0 to 100
o
C.
A TP150 temperature electrode connected to the terminals enables
the option for automatic compensation.
PAGE 6
DPH-64 Instruction manual
