As a professional manufacturer in the field of gas sensors, we deeply analyze the key technical features of CO₂ sensors for you to help you accurately choose a monitoring solution!

1. Core detection principle

NDIR infrared absorption technology (mainstream choice)

✅ Based on the absorption characteristics of CO₂ for specific infrared wavelengths (4.26μm)

✅ Strong anti-interference, not affected by other gases, life span of more than 10 years

❗ Note: Optical window contamination will affect accuracy

Electrochemical/semiconductor technology (low-cost solution)

✅ Small size, low power consumption, suitable for portable devices

❗ Susceptible to temperature and humidity interference, frequent calibration required

2. Key Performance Indicators

3. Intelligent upgrade function

Temperature and humidity compensation: built-in sensor eliminates environmental influence

Automatic baseline calibration (ABC algorithm): long-term accuracy maintenance

Digital output: UART/I2C interface directly connected to the Internet of Things platform

Sound and light warning: CO₂ concentration graded alarm (1000ppm reminder ventilation, 5000ppm emergency alarm)

4. Typical application scenarios

🏢 Smart building: fresh air system linkage control (ASHRAE standard recommends maintaining <1000ppm)

🏫 Educational venues: classroom CO₂ concentration monitoring (improve students' learning concentration)

🏭 Industrial safety: fermentation, cold storage and other confined spaces hypoxia risk warning

🌿 Agricultural greenhouse: crop photosynthesis optimization (800-1200ppm optimal growth concentration)

5. Selection considerations

⚠️ Avoid selecting sensors with unmarked detection principles (possibly pseudo-NDIR technology)

⚠️ Industrial scenarios need to pay attention to explosion-proof certification (such as ATEX/IECEx)

⚠️ Long-term stability is more important than initial accuracy

For more information, pls feel free to contact us:

ShanXi TengXing Sensor Technology Co.,Ltd

Web: www.tensensor.com

Email: [email protected]