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What is OCDA and why?
OCDA – OPTIMUM COAGULANT DOSE ANALYZER WITH PID CONTROLLER
Fast Response to Changes in Raw Water

OCDA provide an early warning to rapid changes in raw water turbidities e.g. storm water influence and allows the adjustment of coagulant chemicals necessary to maintain optimum water quality.

Optimize Chemical Usage

Operators that control the chemical dosage from a ‘gut feel’ based on years of experience have a tendency to overdose just to be on the safe side.  OCDA not only eliminate the need to overdose, but they can actually help the operator optimize usage to the minimum level required to maintain optimum water quality.  In most cases the chemical usage can be reduced with no effect on water quality.

The Optimum Coagulant Dose Analyser – OCDA will indicate the optimization and control of coagulant in the process of clarification of water treatment plant. Although the analyser is capable of displaying the unit in OCu, the OCDA have the capability to indicate whether the dosing is in the range of optimum, under-dose or over-dose.

Technical Specification
OCDA

  • Power : 230Vac/1 Phase / 50Hz.
  • Range: -10.00 ODu ~+10.00 ODu (Optimum Dose unit).
  • Accuracy : 0.1%
PID Controller

  • Power Supply : AC 100 V to 240 V.
  • Display Function : 5 digits of PV display, Active Color PV display, Guide Scroll & Message Display Function and Bar Graph Function.
  • Control Output : Proportional Integral& derivative (PID) – with super function (Fuzzy :Logic).
Benefits

  • Less usage of Jar Tester.
  • Optimum usage of coagulant.
  • Ability to control the dosing upon variation of raw water turbidity.
  • SCM (streaming current monitor)
  • Certified by SPAN
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