Among the many types of indoor air pollutants, carbon dioxide is a key factor affecting human health. An indoor CO2 concentration monitoring sensor acts as a safeguard for respiratory health by monitoring indoor CO2 concentration in real-time and alerting users to improve air quality.

So, what exactly is a CO2 concentration monitoring sensor?

It is an instrument that monitors indoor CO2 concentration in real-time, presenting data digitally or graphically to help users understand air quality conditions. When levels exceed a set threshold, it triggers an alarm to prompt action.

There are two primary working principles:

● Optical (NDIR): Utilizes the infrared light absorption characteristics of CO2. By measuring the intensity of light absorbed, the sensor calculates the concentration.

● Electrochemical: Utilizes the reaction between CO2 and chemicals within the sensor to produce an electrical current proportional to the gas concentration.

These sensors are widely used in several scenarios:

● Homes: To monitor air quality and ensure a healthy living environment for families.

● Offices: To improve the working environment, boosting employee productivity and well-being.

● Schools: To provide a comfortable learning environment and reduce respiratory illness rates among students.

● Hospitals: To control air cleanliness in operating rooms and wards, reducing infection risks.

When purchasing a sensor, consider these key factors:

● Detection Accuracy: One of the most important metrics. It is recommended to choose products with an accuracy within ±5% to ensure reliable data.

● Detection Range: Typical indoor CO2 levels range from 400ppm to 2000ppm. Ensure the product covers this range.

● Display Mode: Options include digital displays, graphs, and indicator lights. Digital and graphical displays are recommended for intuitive viewing.

● Additional Features: Some sensors also monitor temperature, humidity, and TVOCs for a more comprehensive overview.

Choosing a suitable CO2 sensor is an essential step toward a healthier and safer indoor lifestyle.