Uniphos Online COD Analyzer
(Absorption Method)

Chemical Oxygen demand is defined as the amount of oxygen required for the oxidation of all the organic compounds present in a water sample.  

The Uniphos online COD analyzer is a programmable, fully automatic analyzer which measures COD of waste / effluent water samples using a direct method of analysis. This direct method involves oxidation of the sample by potassium dichromate and measurement by absorption of Cr3+ ions. No human intervention is required during the measurement as the analyzer is completely automated.
The inbuilt diagnostics feature gives an alarm if there are any faulty components or if the reagent level goes below the minimum level. Equipped with a next generation touchscreen HMI for display and programming, the analyzer provides a variety of data communication options such as RS-485 MODBUS and industry standard 4-20 mA analog output 

Application

  • Municipal Water
  • Industrial Process Fluids
  • Wastewater and Effluent Water
  • Ground and Surface water

Features

  • COD analysis by direct method, which involves oxidation of sample by potassium dichromate and Measurement by Absorption of Cr3+.
  • Ten times reduction in chemicals and cost per analysis as compared to traditional method  
  • A fully automated system with a industry accredited Program Logic controller (PLC) and Human Machine Interface (HMI) 
  • Built in diagnostic features for reagent level alarm and the component malfunctions 
  • Data communication compatible with required SPCB/CPCB norms 

Specifications

  • Measurement Method: Absorption
  • Measuring Range: 50-2000 mg/l
  • Resolution: 1 mg/l
  • Accuracy: >500 mg/L COD: ± 2% FS
      1.               < 500 mg/L COD: ± 5% FS
  • Digestion Temperature: 180o C for 20 minutes
  • Analysis Time: 50 minutes
  • Power Requirement: 230V AC/ 60 Hz
  • Data Communication: RS-485 & 4-20 mA
  • Dimensions: 400 x 350 x 550 (in mm).
  • Weight: 20 kg Approx

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