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Water Quality Analysis Instrument

COD-K1

COD Analyzer

0-300mg/L,0-1000mg/L

APPLICATION
Widely used for detecting the content of polluted water bodies such as polluted rivers
domestic sewage and industrial wastewater.
FUNCTIONAL CHARACTERISTICS
Dual high impedance preamplifier: high input impedance anti noise
strong anti-interference ability;Multiple calibration methods;
Human machine dialogue: The menu operation is simple and users can operate it according to the prompts on the screen; ulti parameter display on the same screen: simultaneously displaying acid and alkali  oncentration values temperature values and working status;
Software setting output method: 4-20mA output parameter type;
Free setting of measurement range and alarm upper and lower limits; Upper and lower limit exceeding alarm prompt;
Three sets of relay control switches with adjustable hysteresis control range;
Self cleaning switch setting  setting cleaning time and interval;Data storage operation logs and printing functions;
After sales service: providing technical support and contact information for after-sales service to users Maintenance is very simple it is recommended to calibrate once a month; Adopting multiple calibration methods to ensure measurement accuracy;
Optional Chinese and English menus
DESCRIBE

The COD online analyzer uses potassium dichromate open reflux colorimetric method to oxidize the sample. Under the control of a microcomputer, the water sample is mixed with potassium dichromate solution and concentrated sulfuric acid, and silver sulfate is added as a catalyst to chelate chloride ions in the mercury sulfate solution. The mixed liquid undergoes a certain period of reflux at 165 ℃, and the reducing substances in the water react with the oxidant. The Cr6+in the oxidant is reduced to Cr3+, and the color of the mixture will change. Convert the increase in Cr3+into voltage change through photoelectric colorimetry. By measuring the changed voltage and calculating the COD value through curve lookup.

Please contact us and we will provide you with comprehensive and efficient services!

LUDWIG China Representative Office

Production address of the Chinese factory:
LUDWIG Industrial Park, No. 88 Chunfen Road, Guangzhou Economic and Technological Development Zone
Fax: 020-82879806
Customer service hotline: 400-860-9760
Sales consultation email: lw@ludwig-schneider.com.cn

China Sales Center

LUDWIG International Trade (Shanghai) Co., Ltd
Address: Floor 15, Building 1, Guanghua Garden, 248 Guanghua Road, Minhang District, Shanghai
Tel.: 021-5582-7706
Fax: 021-5582-7725
Technical support email: support@ludwig-schneider.com.cn