How to calibrate co2 sensor

The carbon dioxide sensor is a device used to measure the concentration of carbon dioxide in the air and is widely used in Air Quality Detector, industrial waste gas emission monitoring and other fields. During normal use, due to the influence of the external environment, the carbon dioxide sensor will gradually drift, causing its measurement results to no longer be accurate. Therefore, regular calibration of carbon dioxide sensors is particularly important.

Indoor carbon dioxide monitoring
Indoor carbon dioxide monitoring

Calibrate co2 sensor Preparation

Before calibrating co2 sensor, the following preparations need to be done:

1.Prepare the calibration gas: Select a standard gas with a similar concentration of carbon dioxide in the air to be measured, generally 0% and 100% carbon dioxide gas.

2.Prepare calibration tools: According to different types of carbon dioxide sensors, select corresponding calibration tools, such as handheld calibrators, desktop calibrators, etc.

3.Confirm the calibration time: Develop a reasonable calibration plan based on the frequency of use of the carbon dioxide sensor and environmental changes.

NDIR CO2 Sensor Module FS00302

Calibration method

When calibrating co2 sensor, you need to follow the following steps:

1.Place the sensor in a stable environment, wait for the sensor to stabilize, and then record the current reading as the basic value before calibration.

2.Coat the sensor probe with calibration gas, wait for the sensor to stabilize, and record the current reading as the calibrated value.

3.Place the sensor in 0% and 100% standard gas respectively, wait for the sensor to stabilize, and then perform calibration according to the above steps.

4.Based on the values before and after calibration, adjust the parameters of the sensor to ensure that it can accurately measure the concentration of carbon dioxide in the air.


Solid-state electrolyte CO2 Module FS00306

Calibrate co2 sensor precautions

During the process of calibrate co2 sensor, you need to pay attention to the following matters:

1.Standard gas must be used during calibration to prevent gas pollution from affecting the calibration results.

2.Different models of carbon dioxide sensors may have slightly different calibration methods. Appropriate calibration tools and methods need to be selected according to the specific situation.

3.The calibration frequency should be determined according to the actual situation and should not be too frequent or too sparse.

4.It is recommended to perform calibration when the environmental conditions are stable, and wait for a period of time after calibration before using it.

5.After the carbon dioxide sensor is calibrated, the calibration time and results should be recorded in time for subsequent reference and analysis.

Correct calibration of the carbon dioxide sensor can ensure its accurate measurement results and improve the reliability of carbon dioxide detection. I hope this article can help readers better understand the calibrate co2 sensor specifications and provide a useful reference for practical applications.