In industrial production and environmental monitoring, sulfur dioxide (SO₂), as a common but highly hazardous toxic gas, has always been a key focus of safety control. It is widely present in processes such as chemical smelting, thermal power generation, mineral processing, and papermaking and dyeing, not only seriously threatening the health of operators but also being a major culprit in acid rain and environmental pollution. Therefore, continuous and accurate monitoring of SO₂ is crucial.

    Tensensor's MQ-E3-SO2 sulfur dioxide gas sensor is an electrochemical sensing solution designed to address this serious challenge. Its superior performance and reliable stability make it an ideal choice for industrial safety and environmental monitoring.

MQ-E3-SO2 Electrochemical SO2 Sensor

Exceptional performance: Tailor-made for industrial scenarios

    This sensor combines high precision, high stability, and strong anti-interference capabilities, with its core technical indicators fully meeting the stringent requirements of industrial applications:

     High Precision and Wide Measuring Range: Measuring range of 0-20ppm with a resolution up to 0.1ppm, it can sensitively detect low-concentration leaks. The maximum measurement limit reaches 150ppm, ensuring reliable operation even in environments with significant concentration fluctuations.

    Fast Response: Response time (T₉₀) is less than 30 seconds, ensuring timely detection of gas leak risks and providing valuable time for initiating emergency measures.

    Excellent Stability and Repeatability: Repeatability error <2%, monthly stability <2%, guaranteeing the reliability and consistency of long-term monitoring data and significantly reducing calibration and maintenance frequency.

    Strong Environmental Adaptability: It can operate stably within a temperature range of -20℃ to 50℃ and a humidity range of 15%-90%RH, surviving the challenges of most industrial environments.

    Excellent anti-interference capability: The sensor has extremely low cross-response to common industrial interfering gases such as carbon monoxide, hydrogen sulfide, hydrogen, and ethanol, effectively avoiding false alarms and making the monitoring results more reliable.

Wide Applications: Safeguarding Diverse Industrial Scenarios

    The MQ-E3-SO2 sensor is a safety guardian for the following scenarios:

    Power and Energy Industry: Real-time monitoring of SO₂ concentration in flue gas before and after desulfurization in coal-fired and oil-fired power plants, ensuring compliance with emission standards.

    Chemical and Metallurgical Plants: Monitoring leaks in production equipment and pipelines during processes such as sulfuric acid manufacturing, metal smelting, and petroleum refining, ensuring plant safety.

    Environmental Monitoring and Control: As a core component of stationary pollution source online monitoring systems (CEMS) and plant boundary air quality monitoring stations, providing accurate data for environmental supervision.

    Food and Pharmaceutical Industries: Monitoring the workshop environment in processes requiring sulfur fumigation (such as some medicinal materials and fruit and vegetable processing), ensuring occupational health for employees.

Why Choose MQ-E3-SO2?

    Reliable and Durable: Designed for a lifespan of up to 2 years (in air), with a robust structure capable of adapting to complex industrial environments.

    Plug and Play: Provides recommended test circuitry and load resistors for easy integration into various gas detectors and systems.

    Safety Guarantee: Strict production processes and quality control ensure consistent and reliable product performance.

    In today's increasingly stringent industrial safety and environmental protection requirements, selecting an accurate and reliable sensor is fundamental to building an intelligent monitoring system. Tensensor's MQ-E3-SO2 sulfur dioxide gas sensor, with its professional performance, strong anti-interference capabilities, and excellent stability, provides you with a trustworthy monitoring solution and is a powerful partner in safeguarding industrial safety and contributing to the fight for blue skies.