PID photoionization gas sensors offer significant advantages in detecting volatile organic compounds (VOCs). VOCs are not only key precursors to PM2.5 and ozone, exacerbating complex air pollution, but they are also highly irritating and toxic, potentially causing health risks such as cancer and deformities. Against this backdrop, PID sensors, with their superior performance, have become a crucial technology for VOC detection.

    Compared with traditional detection methods, PID sensors offer advantages such as compact size, high accuracy, high resolution, and fast response. They support continuous, real-time monitoring, are highly safe, and have a wide range of applications. For example, Tensensor's independently developed high-performance PID sensor GD-PID sensor combines high sensitivity with a wide range, enabling detection of a wide range of VOCs and some inorganic gases. Its measurement range reaches up to 10,000 ppm, with a minimum detection limit of 1 ppb. Its rapid response and exceptionally high resolution make it suitable for a wide range of applications, including handheld portable devices, fixed-mount monitors, and various analytical instruments.

GD-PID Photoion sensor

    PID sensors operate by ionizing inert gases using a high-voltage alternating electric field, generating high-energy ultraviolet light. This ultraviolet light ionizes the gas molecules being measured, creating positive and negative ions. The gas concentration can be determined by measuring the number of ions. This technology enables the precise detection of compounds at concentrations ranging from parts per billion (ppb) to parts per million (ppm), making it an important complement to non-dispersive infrared (NDIR) and electrochemical methods, and a highly sophisticated gas detection method.

The core advantages of PID sensors include:

    High-precision detection: They can detect trace organic gases at the ppb level with greater accuracy than most traditional gas sensors;

    Non-destructive measurement: After ionization, the gas can be restored to its original molecular state, without altering the sample's properties;

    Fast response: Aside from the initial warm-up period, they provide near-real-time response and continuous monitoring, significantly enhancing monitoring capabilities in hazardous environments.

    In summary, GD-PID sensor, with their high sensitivity, fast response, and wide applicability, play an irreplaceable role in VOC detection, particularly in environmental monitoring, industrial safety, and emergency response scenarios.