Phosphine (PH₃) is a highly toxic and flammable gas widely used in grain fumigation, agricultural product pest control, semiconductor manufacturing, and chemical production. However, even extremely low concentrations of phosphine gas can pose a serious threat to human health and production safety in the event of a leak. Therefore, selecting a high-performance, highly reliable phosphine gas sensor is crucial for ensuring personnel safety and improving environmental monitoring capabilities.

    MQ-E3-PH3 phosphine gas sensor employs a mature constant-potential electrochemical detection principle, featuring high sensitivity, high accuracy, rapid response, and excellent stability. It provides a precise and reliable PH₃ concentration detection solution for various industrial safety and environmental monitoring equipment.

    High-sensitivity detection for accurate identification of low-concentration phosphine

    MQ-E3-PH3 can detect phosphine concentrations from 0 to 10 ppm, with a maximum measurement range of 20 ppm and a resolution of 0.05 ppm. It can promptly detect trace phosphine leaks in the environment, providing reliable data support for safety early warning.

    Its response time (T90) is ≤30 seconds, quickly reflecting changes in gas concentration, helping monitoring equipment to promptly activate alarm measures and effectively reduce safety risks.

    Excellent stability to meet long-term continuous monitoring needs

    For long-term online monitoring requirements in industrial settings, the MQ-E3-PH3 exhibits excellent repeatability and stability.

    Features include: 

    High-precision measurement; 

    Excellent linear output; 

    Repeatability <2%; Monthly drift <2%; 

    Wide operating temperature range (-20℃ to 50℃). 

    Even in complex environments, it maintains stable output, providing continuous and reliable data support for monitoring systems.

    Strong anti-interference capability, improving detection reliability

    Industrial environments often contain multiple gas mixtures, placing higher demands on the sensor's anti-interference capabilities.

    MQ-E3-PH3 is optimized to have low cross-response to a variety of common gases such as carbon monoxide, hydrogen, alcohol, ammonia, and benzene, which can effectively reduce false alarms, improve the accuracy of detection results, and make it more suitable for complex industrial sites and environmental monitoring environments.

    MQ-E3-PH3 phosphine gas sensor, with its high sensitivity, high accuracy, fast response, and excellent stability, provides a reliable core detection solution for industrial safety, grain storage, environmental monitoring, and toxic gas detection equipment, making it an ideal choice for building high-performance pH₃ monitoring systems.

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