NDIR (Non-Dispersive Infrared) gas analyzer measures gas concentrations by detecting the absorption of infrared radiation at characteristic wavelengths. It is widely used for continuous monitoring of CO, CO₂, CH₄, N2O and other infrared-active gases in industrial processes, combustion systems, and environmental applications. The ESEGAS IR-GAS-600 is designed for multi-component gas analysis in industrial and environmental monitoring applications.

NDIR gas analyzer passes infrared radiation through a gas sample. Target gas molecules absorb infrared energy at specific wavelengths, reducing the intensity of the transmitted radiation. The detector measures this attenuation, and the analyzer calculates gas concentration according to the Beer–Lambert law. Gas-specific optical filters and detection channels help identify individual gas components.

Yes. A multi-gas NDIR analyzer can measure several gas components simultaneously when it is equipped with the appropriate optical channels and sensors.

Depending on the selected gases and instrument configuration, the ESEGAS IR-GAS-600 can measure up to six gas components in one unit. Measurement ranges can be configured from ppm-level concentrations to percentage-level concentrations to meet different industrial applications.

Both NDIR and TDLAS analyzers use optical absorption to measure gas concentration, but they use different light sources and detection methods.

An NDIR gas analyzer uses a broadband infrared source and gas-specific optical filters. It is especially suitable for stable, cost-effective multi-component gas measurement.

A TDLAS gas analyzer uses a narrow-band tunable laser to target a specific gas absorption line. It generally provides higher selectivity and is often used for low-concentration or single-gas measurements, particularly in demanding industrial conditions.

The appropriate technology depends on the target gases, measuring ranges, gas matrix and process conditions.

Industrial NDIR gas analyzers are widely used in:

• Power generation and combustion control
• Steel and metallurgical processes
• Chemical and petrochemical plants
• Cement production
• Waste incineration and waste treatment
• Biogas and biomass applications
• Syngas and gasification systems
• Boiler and furnace monitoring
• Environmental and emissions monitoring

These analyzers help operators monitor gas composition, improve combustion efficiency, optimize production processes and maintain reliable operating records.

• The standard delivery time for an ESEGAS NDIR gas analyzer is usually within two weeks after order confirmation.
• The exact lead time depends on the gas components, measurement ranges, output signals and customization requirements. Customized NDIR gas analysis systems may require additional production and testing time.

For accurate and stable measurement, the sample gas entering an NDIR analyzer should generally meet the following conditions:

• The sample gas should be clean and free from dust.
• Moisture and condensation should be removed.
• The recommended sample flow rate is approximately 1 L/min.
• The sample pressure should be close to atmospheric pressure.
• The gas temperature should remain within the analyzer’s specified operating range.
• If the process gas contains high levels of dust, moisture, tar or corrosive components, a suitable gas sampling and conditioning system should be installed before the analyzer. ESEGAS can provide customized sample conditioning solutions according to the actual process conditions.