KORBI Co., Ltd.

Online Electrochemical COD Analyzer

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Quick Information

  • Model Number : HACA-2000


Electrochemical COD Analyzer

When electrochemically-active bacteria oxidize organic matter, they produce electrons. These electrons are transferred to electrodes and produce an electrical current. However, when wastewater containing toxic chemicals is introduced, it reduces the activity of electrochemically-active bacteria and interferes with the normal electron transfer system of the device. This interference will dramatically change the electrical current value. This changed electrical current, expressed as a BOD value, can measure toxicity.

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General specifications
Measurement Principle
Ozone oxidation electrochemical reduction method Electrochemical oxidization method Electrochemical oxidization method
pH electrode, ozone sensor Lead oxidation electrode Modified metal combination electrode
- Error occurred by contamination of pH electrode
-Error occurred by ozone production
- Error occurred by contamination on lead
-coated electrode
-Not able to abrade or recover it
Minimize error rate of contamination because the modified metal combination electrode can be abraded or recovered
Cleaning of electrode
1 per week 1 per week 1 per 3 months
Replacement of measurement electrode
pH electrode/ 6 months 6 months 3 years
Replacement of reference electrode
Ozone sensor/ 1 year 1 year and 6 months 3 years
Environmental toxic substance
Produce lots of ozone gas None None
Field application
Pre-treatment system
A filter method/ if clogging occurs, replacement is necessary A filter method/ if clogging occurs, replacement is necessary UV irradiation method using a tangential flow method: no clogging or replacement necessary
Top water tubing
Required Required No
Distillation system
Required Required No
Air tank
Required No No
Manganate method or Chrome method
Not able to convert Not able to convert Able to convert
Time for Tech Support
2~3 months 2~3 months 2 days

Specification for Electrochemical COD Analyzer


Object of Measurement

COD (Chemical Oxygen Demand)


Ammperometric analysis (Composite electrode)

Measurement Range

1~200ppm (Max. 100,000ppm)

Measurement Interval

1min-1Hr (adjustable)


± 5 %


Color LCD (6") touch screen


Thermal printer

Output Signal

Isolated 4-20mA, RS 232

Temperature & Humidity

0-35°C, less than 95% (RH)


Self-cleaning by flow injection


No voltage contact output (power, operation, malfunction)

Power Requirement

AC 110/220 V, 50/60Hz

Power Consumption

Max. 800VA


600(W) x 1700(H) x 662(D)


Steel, IP5




Pretreatment system equipped with UV sterilization lamp is included

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