In daily life and work, indoor carbon dioxide concentrations often gradually increase with human activity. If a room is poorly ventilated, the carbon dioxide produced by our breathing will accumulate in the enclosed space. Furthermore, modern buildings increasingly emphasize airtightness and insulation, limiting indoor-outdoor air exchange and further exacerbating the problem of rising carbon dioxide concentrations.

    Prolonged exposure to high carbon dioxide concentrations not only affects comfort but can also threaten health and work efficiency. Studies show that when the carbon dioxide concentration in the air is below 2%, it usually has no significant impact on the human body; once it exceeds this threshold, it can cause respiratory discomfort and even poisoning symptoms. Extremely high concentrations can even pose a risk of suffocation. Therefore, although carbon dioxide itself is not a toxic gas, excessive concentrations should not be ignored.

    In commercial and residential buildings, intelligent ventilation systems and air exchange devices are increasingly incorporating carbon dioxide sensors to regulate indoor air quality in a more energy-efficient and intelligent way. The sensors can detect carbon dioxide levels in real time and automatically optimize ventilation strategies by linking air conditioning, fresh air systems, or air purifiers without requiring human judgment. These sensors have been gradually integrated into smart home products such as smart thermostats and fresh air conditioners, creating a healthier and more comfortable living environment for users.

    Among numerous carbon dioxide detection technologies, non-dispersive infrared absorption (NDIR) is considered a highly efficient and reliable method. This technology utilizes the specific absorption characteristics of carbon dioxide to 4.3μm wavelength infrared light for measurement. Since oxygen, nitrogen, carbon monoxide, and water vapor have no obvious absorption peaks in this band, NDIR possesses excellent anti-interference capabilities and selectivity, making it suitable for long-term stable operation.

TX-Z19C Carbon Dioxide Gas Sensor

TX-Z19D Carbon Dioxide Gas Sensor

TX-Z19E Carbon Dioxide Gas Sensor

    Tensensor's TXZ19 series carbon dioxide gas sensors are designed based on this principle. As a general-purpose smart sensor, the TXZ19 uses NDIR technology for gas detection, offering advantages such as good selectivity, no oxygen dependence, and long service life. The product has built-in temperature compensation and supports serial port output and PWM output, facilitating integration into fresh air systems, air purifiers, environmental monitoring equipment, smart homes, and HVAC systems, meeting the needs of various application scenarios.

    Tensensor's infrared carbon dioxide sensors are also highly recognized in the market, covering various application scenarios from civilian and commercial to industrial levels. Whether you're developing smart home appliances or need to configure air quality management solutions for large buildings, we can provide matching sensing solutions. Please feel free to contact us with any related needs.

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