The fresh air system has become an increasingly popular household appliance in recent years. It introduces fresh outdoor air into the room and exhausts stale indoor air, thereby improving indoor air quality. Most fresh air systems are equipped with a carbon dioxide sensor. So, what is its purpose? How does it help the user?

First, let's understand what a CO2 sensor is

A carbon dioxide sensor is a device used to detect and measure the concentration of carbon dioxide (CO2) in the environment. It monitors CO2 levels in the atmosphere through electronic components and sensor technology, often expressed in ppm (parts per million). There are two common types of CO2 sensors: electrochemical and optical.

● Electrochemical sensors work on the principle of oxidation-reduction reactions between carbon dioxide and electrodes.

● Optical sensors (such as NDIR) utilize the light absorption characteristics of carbon dioxide to detect its concentration.

Second, the relationship between CO2 concentration and indoor air quality

Carbon dioxide is a gas produced during human respiration. Under normal circumstances, a person exhales about 16 liters of CO2 per minute. Without proper ventilation, CO2 concentrations rise, which can impact health.

Generally, CO2 levels between 400-600ppm are considered safe. Exceeding 600ppm may cause dizziness, drowsiness, and lack of focus. Over 1000ppm can lead to symptoms like difficulty breathing and increased heart rate.

What role does a CO2 sensor play in a fresh air system?

The carbon dioxide sensor serves the following purposes:

● Air Quality Monitoring: It provides real-time data on indoor CO2 levels to help users understand their indoor air quality.

● Purification Control: Connected to the fresh air system, it can automatically adjust the operation mode based on CO2 changes to enhance purification efficiency.

● Health Management: It can link with health management systems to alert users of declining indoor air quality and prompt corrective measures.

Summary of benefits for fresh air system users:

The CO2 sensor helps protect health by ensuring timely air improvement. Specifically:

● Improving Indoor Air Quality: CO2 is a key metric for air health. Monitoring allows for rapid response to air quality drops.

● Increasing Productivity: Research shows that poor indoor air quality reduces efficiency. Sensors help maintain an environment conducive to productivity.

● Protecting Family Health: Indoor pollution is a major cause of respiratory issues. Sensors help safeguard family members from these risks.

In conclusion, the carbon dioxide sensor is a vital component of a fresh air system, enabling active protection of health through automated air management.