Water quality monitoring system of Online COD Analyzer – HACA-4000


HACA-4000 is a measuring instrument that automates potassium permanganate method of water pollution test method. The potassium permanganate method measures the COD by adding a certain amount of oxidizing agent (potassium permanganate) to the sample, heating it, converting the amount of potassium permanganate consumed in the oxidative decomposition of the organic matter to the corresponding amount of oxygen consumed. At this time, the appropriate amount is calculated by recognizing the rising point of the ORP value by the addition of potassium permanganate as the proper end point. The HACA-4000 is a new product from KORBI that not only improves performance by applying patented technology and preliminary measurement logic, but also has sophisticated design and user-friendliness.



Apply preliminary measurement logic to improve measurement accuracy

Application of multi-channel valve for quantitative distribution of samples and reagents

Built-in user-oriented operating program with enhanced security function

Built-in functions to enhance user convenience


    • Measurement item

Chemical Oxygen Demand (COD)

    • Measurement method

Decomposition method by chemical oxidants (Acidic condition, Potassium permanganate)

    • Measurement range

0~200mg/L (Adjustable)

    • Measurement interval

60 minutes (Adjustable)

    • Detection limit

0.6mg/L F.S. or less

    • Accuracy

±2% F.S.

    • Reproducibility

±2% F.S.

    • Linearity

±4% F.S.

    • Zero/Span drift

±2% F.S.

    • Reactor heating

Oil heating by heater coil

    • Sample/Reagent measuring method

Step motor pulse control

    • Sample/Reagent distribution method

6-port distribution control method (Fixed quantity injection with multi-channel valve system)

    • Operation system

Windows 7 Pro

    • Output

DC 4~20mA, RS-232C

    • Status display

Normal operation, on calibration, error

    • Display

Color LED 10.4″ (Touch screen)

    • Power

AC 220V, 50/60Hz

    • Power consumption

Average 150W (Maximum 450W)

    • Voltage regulation

3% or less

    • Data storage capacity

HDD 100G or more

    • Data output

USB terminal

    • Enclosure/Size

Steel 1.5T (Except paint) / 645(W) × 439(D) × 1600(H) mm

    • Operating humidity

RH 95% or less



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