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1.0 Introduction
The Liquitron
™
DP5000 Series pH Controllers are designed for a variety of industrial pH applications including metal
finishing, water treatment, printed circuit board manufacturing and waste treatment.
The DP5000 is a microprocessor-based pH controller with a backlit customized display and tactile keypad for ease of
programming. The DP5000 allows independent programming of control methods (‘ON/OFF’ or ‘PROPORTIONAL’) for
acid (Pump A) or base (Pump B) dosage. Independent high and low pH alarms may be set with activation of the ‘Alarm
relays.’ A third relay output is available for activating a solenoid valve or other devices.
The controller is compatible with any pH electrode that generates a mV signal and allows incorporation of platinum 1000 W
automatic temperature compensation (ATC) elements. Two point or single point pH calibrations may be performed. Timer
functions for pump ‘Run’ time and solenoid ‘Delay’ times can be programmed to operate a solenoid pump valve. An
‘Advanced Menu’ allows selection of special features such as a ‘Point 3’ (inflection point) for the control profiles of the
acid or alkali pumps for finer control. The DP5000 features continuous non-volatile memory back-up, voltage selection,
pre-amplifier outputs, flow and level switch inputs as standard. 4-20 mA recorder output is optional.
2.0 Unpacking
Your carton will contain the items shown in Figure 1. Please notify the carrier immediately if there are any signs of damage
to the controller or its parts. Contact your LMI Distributor if any of the parts are missing.
There is a number label on the inside cover of the unit; for easy reference, you should note the model and serial numbers
on the front cover of this instruction manual.
DP5000 pH Controller
Quick Reference Guide
User Manual
Figure 1: Unpacking Items
(866) 433-6682 • (281) 359-8538 • sales@novatech-usa.com • www.novatech-usa.com
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