What is the main detection method used by the COD water quality online analyzer?

The COD water quality online analyzer is mainly composed of main modules such as online monitoring, sample collection and analysis, and enhanced safety monitoring. It is mostly used in water quality data analysis in municipal and industrial water industries. Analyzer functions and readings are thoroughly checked to ensure that they are working efficiently on a daily basis. Major tasks include checking for leaks (pipe connections and plumbing and liquid handling components), levels of reagents (reagents, calibration and cleaning solution bottles) ) and potential obstructions to sample flow. The COD water quality online analyzer mainly uses the ion selective electrode measurement method to detect. Electrodes on the instrument: pH, fluorine, sodium, potassium, calcium, magnesium, and reference electrodes. Each electrode has an ion-selective membrane, which reacts with the corresponding ions in the sample to be measured. The membrane is an ion exchanger, which reacts with the ionic charge to change the membrane potential, and the potential between the liquid, the sample and the membrane can be detected. . The two potential differences detected on both sides of the membrane will generate a current, the sample, reference electrode, and reference electrode solution form a 'loop' on one side, and the membrane, internal electrode solution, and internal electrode on the other side. Features of COD water quality online analyzer: 1. It has one-button self-test function, self-diagnosis function, automatic cleaning function and automatic calibration function. 2. High detection accuracy, low measurement lower limit, and small long-term drift of the instrument. 3. Equipped with whole-point measurement, interval measurement and external control measurement. It has alarm function, quality control function and anti-control function. 4. The single-channel high-integration valve group is adopted, and the maintenance and cleaning are simple and quick. 5. All-weather networking function, monitor the running status of the instrument anytime and anywhere. 6. Possess fault recording function. Can save more than 3 years of historical data. 7. The new photoelectric quantitative technology is not affected by interference such as large chroma, suspended solids, and bubbles. It has high reliability and precision, and strong anti-interference ability. 8. Automatic reminder and automatic reset function for failure and lack of reagent (sample). Automatically work after power failure recovery.
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