How Does an Infrared Gas Analyzer Accurately Detect CO and CO₂? Principle and Key Parameters

Accurate detection of carbon monoxide and carbon dioxide concentrations in the air is crucial in the fields of environmental monitoring and occupational health. Infrared gas analyzer adopts the principle of non dispersive infrared (NDIR), which has the advantages of high measurement accuracy, long service life, and low cross interference, and has become an essential instrument in environmental monitoring and occupational health fields.

The Importance of Infrared Gas Analyzer

Carbon monoxide and carbon dioxide are common air pollutants. Carbon monoxide is highly toxic, while high concentrations of carbon dioxide can lead to hypoxia and health risks. Infrared gas analyzer can quickly and accurately detect the concentration of these two gases, providing reliable data support for environmental monitoring, occupational health assessment, and air quality supervision in public places. The instrument complies with multiple national and industry standards, including JJG635-2011, HJ965-2018, etc., ensuring the authority and comparability of the test results.

Technical principles and core parameters

The infrared gas analyzer operates based on the principle of non dispersive infrared (NDIR). Different gas molecules selectively absorb infrared light of specific wavelengths. By measuring the intensity change of infrared light passing through the gas, the gas concentration can be accurately calculated.

Key technical parameters:

Detection principle: Non dispersive infrared spectroscopy (NDIR)

Detecting gases: carbon monoxide (CO), carbon dioxide (CO2)

Measurement range:

Option 1: 0-50ppm CO, 0-5000ppm CO2

Option 2: 0-200ppm CO, 0-10000ppm CO2

Accuracy index: Linear error ≤ ± 2% F · S, repeatability ≤ 1.0%

Response time: CO ≤ 45 seconds, CO2 ≤ 60 seconds

Display system: 7-inch capacitive touch screen

Data storage:>100000 sets of measurement data

Power supply system: AC/DC dual-use, built-in lithium battery

Technical advantages

High precision detection: using high-precision infrared sensors, linear error ≤ ± 2%, repeatability ≤ 1.0%

Quick response: CO response time ≤ 45 seconds, CO2 ≤ 60 seconds, preheating time only 5 minutes

Intelligent temperature control: The machine has a constant temperature heating function, suitable for working in environments ranging from -20 ℃ to 65 ℃

Multiple calibration: supports both nitrogen and catalytic zeroing methods to ensure accuracy

Data processing: Large capacity storage, supporting USB export and wireless transmission

Environmental adaptation: Temperature and humidity compensation algorithm to eliminate the influence of environmental factors

Portable design: 257.3 * 147 * 300mm compact size, suitable for on-site inspection

Application Fields

Infrared gas analyzers are widely used in the following scenarios:

Environmental monitoring: air pollution monitoring, air quality assessment

Occupational Health: Workplace Air Quality Testing, Occupational Health Assessment

Indoor air quality monitoring in public places such as shopping malls, schools, hospitals, etc

Industrial production: gas monitoring in chemical, metallurgical and other processes

Emergency monitoring: rapid detection of toxic gases at the accident site

The infrared gas analyzer effectively solves the pain points in traditional gas detection methods through advanced NDIR technology and intelligent design, providing efficient and accurate detection solutions for environmental monitoring and occupational health. Its excellent technical performance, simple operation mode, and reliable data output make it an important tool in the field of air quality monitoring.