Key Features

• Wide measurement range: Supports CO₂ measurement from ppm levels to percentage concentrations, depending on the selected configuration.
• High measurement accuracy: The IR-GAS-600 provides measurement accuracy of approximately ±2% of full scale under specified operating conditions.
• Good repeatability: The analyzer is designed to provide stable and repeatable CO₂ measurements for continuous industrial operation.
• Fast response: Provides rapid detection of CO₂ concentration changes for real-time process monitoring.
• High stability: Uses high-stability infrared detectors, temperature control, and compensation to maintain analytical stability.
• High-resolution optical system: Uses high-precision optical components and gas absorption cells to improve measurement performance.
• Real-time continuous monitoring: Continuously measures CO₂ concentration and provides real-time data for process control, emissions monitoring, and quality management.
• Single- or multi-gas configuration: CO₂ can be measured independently or together with gases such as CO, CH₄, H₂, and O₂ in a multi-gas analyzer.
• Flexible process integration: Suitable for online, portable, and extractive process gas monitoring applications.
• Standard industrial outputs: Supports 4–20 mA analog output and RS232/RS485 digital communication for integration with PLC, DCS, and other industrial control systems.
• Process optimization: Real-time CO₂ data can support combustion control, fermentation monitoring, gasification processes, and other industrial operations.
• Environmental monitoring: Can be used to monitor CO₂ emissions from industrial processes and support greenhouse gas measurement and emission management.
• Wide industrial applications: Suitable for energy combustion, petrochemical processes, fermentation, biomass gasification, environmental monitoring, fuel cells, semiconductor manufacturing, and other industrial applications.

CO₂ Analyzer Measurement

• Low-concentration CO₂
• ppm-level CO₂
• %Vol CO₂
• High-concentration CO₂
• Continuous process CO₂
• CO₂ emissions

CO₂ in gas mixturesWe can provide Carbon Dioxide (CO2) gas analyzers with TDLAS and NDIR technologies to meet different customer needs. Measurement range from ppm to % .

What are the principles of measuring CO2 gas?

Measuring CO2 gas involves the use of two main technologies: Tunable Diode Laser Absorption Spectroscopy (TDLAS) and Non-Dispersive Infrared (NDIR).

TDLAS is a relatively new technology that relies on the absorption of light in order to measure the concentration of CO2 in a gas. It uses a laser to detect the molecules in a sample, and then calculates the concentration based on their optical absorption. This technique is advantageous in that it has a high degree of accuracy, can measure small concentrations, and does not require calibration with reference gases.

• ESE-LASER-720 Online TDL CO2 Analyzer (0~100%; 0~1000ppm customizable)
• IR-GAS-600 Online CO2 Analyzer (0~200/500/10000μmol/mol)

A carbon dioxide (CO2) gas analyzer that utilizes NDIR (Nondispersive Infrared) technology is a device specifically designed to measure the concentration of carbon dioxide (CO2) in a gas sample using the NDIR principle. NDIR technology has become a widely adopted method for CO2 gas analysis due to its accuracy and reliability.

In NDIR-based CO2 gas analyzers, the working principle involves the measurement of the absorption of infrared light by CO2 molecules. The analyzer emits infrared light at a specific wavelength that is absorbed by CO2, while other gases in the sample do not absorb significantly at that wavelength. By measuring the amount of light absorbed, the analyzer can determine the CO2 concentration in the gas sample.

Here’s a simplified overview of how an NDIR CO2 gas analyzer works:

• Infrared Light Source: The analyzer includes an infrared light source, typically an infrared LED or a tunable infrared laser diode. The light source emits infrared light at a specific wavelength that corresponds to the absorption band of CO2.
• Gas Sample Chamber: The gas sample is introduced into a measurement chamber or cell, which allows the infrared light to pass through it.
• Detector: A detector is positioned on the other side of the gas sample chamber to measure the intensity of the transmitted light. The detector detects the remaining infrared light after it has passed through the gas sample.
• Reference Channel: The analyzer may also include a reference channel that measures the intensity of light that has not passed through the gas sample. This reference measurement helps compensate for any variations in the light source intensity or other factors that can affect the measurement.
• Signal Processing: The analyzer processes the signals from the detector and reference channel to determine the absorption of light by the CO2 molecules in the gas sample. The absorption signal is then converted into a CO2 concentration reading.

NDIR-based CO2 gas analyzers offer several advantages, including high accuracy, stability, and low sensitivity to other gases present in the sample. They are commonly used in applications such as indoor air quality monitoring, greenhouse gas monitoring, combustion processes, and industrial emissions control.

When selecting an NDIR CO2 gas analyzer, important factors to consider include the measurement range, accuracy, response time, calibration requirements, data logging capabilities, and any specific application requirements.