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Online CODcr COD Water Quality Analyzer Potassium Dichromate Oxidation Spectrophotometric Method Monitor

Nanjing Juge Environmental Technology Co., Ltd.
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    Buy cheap Online CODcr COD Water Quality Analyzer Potassium Dichromate Oxidation Spectrophotometric Method Monitor from wholesalers
     
    Buy cheap Online CODcr COD Water Quality Analyzer Potassium Dichromate Oxidation Spectrophotometric Method Monitor from wholesalers
    • Buy cheap Online CODcr COD Water Quality Analyzer Potassium Dichromate Oxidation Spectrophotometric Method Monitor from wholesalers

    Online CODcr COD Water Quality Analyzer Potassium Dichromate Oxidation Spectrophotometric Method Monitor

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    Brand Name : JUGE
    Model Number : AG9000
    Certification : IOS9001, CE
    Price : USD2000-7000
    Delivery Time : 5-8 working days
    Payment Terms : Online order,T/T
    Supply Ability : 100 Unit/Week
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    Online CODcr COD Water Quality Analyzer Potassium Dichromate Oxidation Spectrophotometric Method Monitor

    Online CODcr COD Water Quality Analyzer Potassium Dichromate Oxidation Spectrophotometric Method Monitor


    >>Overview

    Chemical Oxygen Demand (COD) refers to the mass concentration of oxygen consumed by strong oxidants under specific conditions to oxidize organic and inorganic reducing substances in water samples. COD is a critical indicator reflecting the extent of water pollution caused by organic and inorganic reducing substances.

    This analyzer is designed for long-term, unattended, automatic, and continuous operation based on field configurations. It is widely applicable to scenarios such as industrial pollution source wastewater discharge, industrial process wastewater, industrial wastewater treatment plant effluent, and municipal sewage treatment plant effluent. Depending on the complexity of on-site testing conditions, optional preprocessing systems can be integrated to ensure reliable testing processes, accurate results, and full compliance with diverse on-site requirements.


    >>Features
    A mixture of the water sample, potassium dichromate digestion solution, silver sulfate solution (added as a catalyst to enhance oxidation efficiency for straight-chain aliphatic compounds), and concentrated sulfuric acid is heated to 165°C. After the dichromate ions oxidize organic substances in the solution, a color change occurs. The analyzer detects this colorimetric change, converts it into a COD value output. The amount of dichromate ions consumed corresponds to the quantity of oxidizable organic matter, which is quantified as the COD value.


    >>Technical Parameter

    Test Method

    Potassium dichromate oxidation spectrophotometric method

    Measuring Range

    0~5000mg/L (segmented measurement, expandable)

    Indication Error

    20% range standard solution: ≤±10%

    50% range standard solution: ≤±8%

    80% range standard solution: ≤±5%

    Quantitative Lower Limit

    ≤15mg/L

    Repeatability

    ≤5%

    Drift (24h)

    Low concentration drift: ±5mg/L

    High concentration drift: ≤5%

    Masking Capacity

    Up to 20,000mg/L Cl⁻

    Measurement Time

    <50min (digestion time adjustable)

    Measurement Modes

    Adjustable time interval, fixed time point, or triggered measurement

    Calibration Modes

    Automatic calibration (1~99 days adjustable)

    Manual calibration based on actual water samples

    Maintenance Cycle

    1 month per session; ~30min per maintenance

    Human-Machine Interface

    Touchscreen display and command input

    Self-Diagnosis & Protection

    Self-diagnoses operational status; retains data during anomalies/power outages

    Automatically clears residual reactants and resumes operation after reset/power recovery

    Data Storage

    5-year data capacity

    Input Interface

    Digital input

    Output Interfaces

    1× RS232, 1× RS485

    2× 4~20mA analog outputs

    Operating Environment

    Indoor use; recommended temperature: 5~28℃, humidity ≤90% (non-condensing)

    Power Supply

    Voltage: AC 220±10% V

    Frequency: 50±0.5 Hz

    Power: ≤150W (excluding sampling pump)

    Dimensions

    520H × 370W × 265D (mm)


    Quality Online CODcr COD Water Quality Analyzer Potassium Dichromate Oxidation Spectrophotometric Method Monitor for sale
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