The working principle of electrochemical sulfur dioxide sensor
Gas detector drager-The electrochemical sulfur dioxide sensor uses a professional sulfur dioxide concentration sensor probe as the core detection device, which is widely used in the measurement of sulfur dioxide concentration in chemical plants, coal mines and various environments.
Industrial waste gas refers to various pollutant-containing gases that are emitted into the air during the fuel combustion and production processes in the factory area. From the morphological point of view, industrial waste gas can be divided into particulate waste gas and gaseous waste gas. Particulate waste gas pollutants are mainly polluted smoke and dust produced during the production process, and their sources mainly include cement plants, heavy industrial materials plants, heavy metal plants, and chemical plants. Gaseous waste gas mainly includes nitrogen-containing organic waste gas, sulfur-containing waste gas and hydrocarbon organic waste gas, which is the industrial waste gas with the most types and the most harmful. Common exhaust gases include sulfur dioxide, carbon dioxide, nitrogen oxides, hydrogen sulfide, fluoride, chlorine and so on.
Principle of electrochemical sulfur dioxide sensor:
Gas detector drager- The electrochemical sulfur dioxide sensor means that the corresponding redox reaction occurs between the working electrode and the counter electrode to release electric charge to form a current. The current is proportional to the concentration of SO. Which can be determined by measuring the current. The fourth electrode and auxiliary electrode of the sensor are used to compensate zero current. Aand have the characteristics of strong signal level and low zero current. A sensor is used to monitor sulfur dioxide. From shortening the detection time to lowering the detection limit. It shows great advantages.
The sensing device has high current sensitivity. The response time is short, the stability is good, and the background noise is low. This sensor can not only measure sulfur dioxide in the air. But also measure sulfur dioxide in liquids with low conductivity. The determination of sulfur dioxide has good reproducibility and reversibility, the response time is less than 20 seconds, the sympathetic effect on other gases is small, and the influence of temperature and humidity is small. It is widely used in urban atmospheric environmental monitoring. Corporate environmental monitoring, unorganized pollutant emissions from factories, emergency monitoring, etc.
In the future, electrochemical sensors will be widely used in various fields. Among the many sensor types. The electrochemical sensor has become a sensor with a wide range of applications, many research fields. And mature technology. In the future. Sensors are developing rapidly in the direction of miniaturization, miniaturization, and intelligence. Electrochemical sensors with special performance and advantages will continue to emerge and enter practical applications.
