INTRODUCTION
The 4 line by 20-character LCD display allows text messages or
prompts in “real” language without confusing abbreviations.
Encoder knobs are rotated to scroll through different menus, values or
changing set points. Once a mode of operation, calibration value or
setpoint is dialled simply push the encoder knob to select. All custom
configurations are stored in non-volatile memory.
A real time clock is always present and each relay output can be linked
with a timer to operate only at programmed times.
The signal generated from a pH electrode is extremely weak with a very
high impedance and therefore very sensitive to electrical interference.
This necessitates the use of shielded cable for the connection of the
electrode. A coaxial cable with an additional outer layer of carbon must
be used to ensure a steady pH signal. The DPH-64 converts the electrode
signal with a precision input amplifier and then further processes the
electrical signal for display, alarm, signal and set point controls.
.1/ DPH-64 pH / ORP controller
DPH-64 Instruction manual
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