In high-risk industries such as chemical engineering, mining, and environmental protection, the timely and accurate detection of hydrogen sulfide (H₂S), a toxic and harmful gas, is crucial for ensuring personnel safety and stable production. The Tensensor's MQ-E3-H2S hydrogen sulfide gas sensor, is based on a constant-potential electrolytic electrochemical principle and boasts high precision, high stability, and strong anti-interference capabilities, making it a reliable choice for industrial gas monitoring.

    MQ-E3-H2S Electrochemical H2S Sensor

Core Technology, Precise Response

    The MQ-E3-H2S sensor employs constant potential electrolysis technology. It generates current through the redox reaction between hydrogen sulfide and oxygen on the working and counter electrodes. The current magnitude is directly proportional to the gas concentration, achieving precise detection. Its main technical advantages include:

    High Sensitivity and Resolution: Sensitivity reaches (0.8±0.15) μA/ppm, resolution is 0.1ppm, accurately identifying low concentrations of H₂S.

    Fast Response: Response time (T90) is less than 30 seconds, suitable for real-time monitoring and emergency warning.

    Excellent Stability: Monthly stability is less than 2%, zero-point drift is small, and long-term reliability is high.

    Wide Temperature and Humidity Adaptability: Operating temperature -20℃～50℃, humidity 15%～90%RH, suitable for various harsh environments.

Multi-Scenario Applications, Comprehensive Protection

    MQ-E3-H2S gas sensor is designed specifically for industrial and environmental applications, suitable for the following typical scenarios:

    Industrial Safety Monitoring: Used for H₂S leak detection in processes such as petrochemicals, natural gas processing, and wastewater treatment.

    Mine Safety Protection: Real-time monitoring of H₂S concentration in underground working environments to prevent poisoning accidents.

    Environmental Monitoring Systems: Integrated into air quality monitoring stations, plant boundary monitoring equipment, etc., to assist in environmental pollution control.

    Laboratory and Emergency Detection: Core sensing unit in portable detectors and fixed gas alarm systems.

Strong anti-interference capability, more reliable data

    The MQ-E3-H2S has good selectivity and extremely low response to common interfering gases such as CO, H₂, NH₃, and alcohol, ensuring that it can still output accurate and reliable H₂S concentration data in complex gas environments, reducing false alarms and false negatives. Tensensor offers a complete product line of electrochemical gas sensors, dedicated to providing customers with high-performance, long-life gas detection solutions. The MQ-E3-H2S sensor has undergone rigorous testing and verification, boasting a lifespan of up to 2 years (in air), making it an ideal component for building safety monitoring systems. For technical consultation or sample requests, please contact us:

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