What is a diffusion-type sulfur dioxide (SO₂) gas detector?
1. Purpose
The diffusion type sulfur dioxide gas detector is mainly used to detect the concentration of sulfur dioxide in the environment, and is suitable for places such as chemical plants, smelters, sewage treatment stations that may produce sulfur dioxide, as well as urban environmental monitoring and indoor air quality assessment scenarios.
Working principle
1. The diffusion type sulfur dioxide gas detector is mainly based on the following detection principles:
2. Principle of electrochemical sensor: The oxidation-reduction reaction of sulfur dioxide in the electrochemical sensor generates a current signal, and the magnitude of the current is proportional to the concentration of sulfur dioxide.
3. UV absorption method: Determine the concentration of sulfur dioxide gas by measuring the absorption changes of specific wavelengths of ultraviolet light.
4. Infrared absorption spectroscopy: Based on Lambert Beer's law, the concentration of sulfur dioxide is determined by measuring the absorption of specific wavelengths of infrared light.
Characteristics
1. Portability: The diffuse design makes it easy to carry and suitable for on-site testing.
2. Low power consumption: No need for additional pumping devices, low power consumption, and less noise.
3. Real time monitoring: capable of displaying sulfur dioxide concentration in real-time and providing timely alarm reminders.
4. Alarm function: It has multiple alarm methods such as sound, light, and vibration to ensure timely notification to users when the concentration exceeds the standard.
5. Multi gas detection capability: Some models can simultaneously detect multiple gases, such as carbon monoxide, hydrogen sulfide, etc.
Application scenarios
1. Industrial safety: Monitor sulfur dioxide leaks in chemical plants, smelters, and other places to ensure worker safety.
2. Environmental Protection: Used for monitoring urban air quality and tracking pollution sources.
3. Laboratory monitoring: Monitor the impact of sulfur dioxide on experiments in a laboratory environment.
4. Emergency response: Quickly detect sulfur dioxide concentration in the event of an accident to assist in emergency decision-making.
