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Infrared carbon dioxide analyzer: the technological guardian of air quality

Source:Hengmei Environmental Sanitation Instrument Network    Update time:2025-07-31 14:30:23

Why is precise monitoring of carbon dioxide necessary?

Today, with the increasing attention to carbon neutrality goals and air quality, carbon dioxide (CO ₂) is not only the "culprit" of the greenhouse effect, but also a key indicator for measuring indoor air quality and industrial emission compliance. Traditional detection methods rely on manual sampling or laboratory analysis, which suffer from pain points such as data lag, large errors, and high costs. The infrared carbon dioxide analyzer, with its non dispersive infrared (NDIR) technology, achieves real-time and accurate monitoring of CO ₂ concentration, becoming an essential tool in fields such as environmental protection, industry, and healthcare.

Technical principle: How can NDIR solve monitoring problems?

The core of the infrared carbon dioxide analyzer is based on Lambert Beer's law: CO ₂ molecules have absorption characteristics for specific wavelengths (4.26 μ m) of infrared light, and the absorption intensity is proportional to the concentration. The instrument achieves high-precision detection through the following technologies:

Dual channel detector: eliminates ambient light interference and improves signal-to-noise ratio;

Constant temperature control module: operates in a wide temperature range of -20 ℃ to 60 ℃, with an error of ≤± 0.5 ℃;

Dynamic compensation algorithm: automatically corrects the impact of temperature, humidity, and air pressure fluctuations on data to ensure measurement stability.

Technical advantage: redefining testing standards

Intelligent Interaction and Data Management

7-inch Android touch screen: real-time display of concentration, temperature and humidity, and historical curves;

100000 data storage: supports scheduled storage and mean calculation (0.5h/8h/24h);

Multi terminal data export: USB direct connection, WiFi upload to the cloud, compatible with environmental monitoring platforms.

Industrial grade reliability design

IP54 protection level: dustproof and waterproof, suitable for complex environments such as factories and mines;

Built in pump suction sampling: fast response (T90 ≤ 60 seconds), avoiding pipeline delay;

Dual zero calibration mode: nitrogen calibration (high-precision) and catalytic zero calibration (low-cost maintenance) can be freely switched.

Accuracy and Compliance

Measurement range: 0-5000ppm/0-10000ppm optional, resolution up to 0.0001%;

Compliant with national standards: Strictly follow the JJG635-2011 verification regulations, with an error of ≤± 2% FS, and meet the requirements of public places and occupational health testing.

Application scenarios and solutions

Environmental monitoring

Pain point: Factory exhaust emissions exceeding the standard are difficult to trace;

Solution: Deploy an analyzer at the chimney outlet to monitor the concentration of CO ₂ in real time and link it with the control system, with automatic alarm for exceeding the standard. After application in a certain chemical plant, the emission compliance rate has increased to 99.8%.

Indoor Air Quality Management

Pain point: High concentration of CO ₂ in school classrooms and office buildings can pose health risks;

Solution: Install wall mounted equipment and automatically adjust the ventilation volume in conjunction with the fresh air system. A test conducted at a middle school in Beijing shows that students' attention concentration has increased by 30%.

Optimization of Agricultural Greenhouse

Pain point: Traditional experience judgment of CO ₂ concentration has a large error, which affects crop yield;

Solution: Deploy an analyzer at the top of the greenhouse and maintain the optimal range of 400-800ppm with gas replenishment equipment. After being applied by farmers in Shouguang, Shandong, tomato yield increased by 15%.

From environmental law enforcement to smart agriculture, infrared carbon dioxide analyzers are becoming the "invisible sentries" guarding air quality. Shandong Hengmei Electronics will continue to promote environmental monitoring upgrades through technological innovation, helping to achieve carbon neutrality goals and sustainable development.



Article address:https://www.environmentinstrum.com/industry/30.html
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