How an SO2 Detector Works

SO2 detector is used in a variety of industrial applications to monitor air quality and protect worker safety. They are used in environmental monitoring to measure so2 detector levels in the air, and are also used to monitor combustion emissions in industrial processes to ensure compliance with regulations. These devices are available in portable and wearable formats to allow workers to carry them with them throughout the work day.

SO2 is a toxic gas that can be life-threatening in high concentrations. It is found naturally in the atmosphere, released during volcanic eruptions, and it can be a byproduct of many different industrial processes. These include sulfuric acid manufacturing, metallurgy, and electric power. Sulfur dioxide is also a component of acid rain and atmospheric particulate matter. Inhalation of this toxic gas can cause respiratory problems in humans, especially those with asthma or other breathing difficulties.

The SO2 gas detector works by using a two-electrode electrochemical sensor to detect the presence of sulfur dioxide in the air. This sensor consists of a working electrode, a counter electrode, and an external circuit. When SO2 is present in the air, it reacts with the working electrode to produce H+ and electrons (e-) that move to the counter electrode. This reaction produces a current that can be measured by the external circuit, which in turn provides an output signal that indicates the presence of SO2 in the air.

Monitoring Ammonia Levels: Exploring the Function of NH3 Meters”

During the training campaign, SO2 measurements recorded by the reference instrument and the evaluated sensors (raw and calibrated response) correlated well with each other. The root-mean-squared error (RMSE) values were around 12 and 16 ug/m3, respectively, indicating that both of the evaluated sensors produced data that change proportionally and linearly with the SO2 concentration in the ambient air.