The Online Dissolved Oxygen Meter is essential for industries where maintaining optimal dissolved oxygen levels is key. It typically uses optical or galvanic sensing methods. Optical meters employ fluorescence technology, where the fluorescence of a special sensor material is quenched by dissolved oxygen in the water, and the degree of quenching is correlated to the oxygen concentration. Galvanic meters rely on an electrochemical reaction between oxygen and the electrodes to generate an electric current proportional to the oxygen content. In aquaculture, it ensures fish health by maintaining proper oxygen levels in ponds and tanks. In wastewater treatment, it monitors the efficiency of aerobic treatment processes. This meter offers high - precision measurements, with the ability to detect dissolved oxygen down to very low levels. It can be installed in pipelines or open - water bodies, providing continuous, reliable data for process control.