Non-Dispersive Infrared (NDIR) Analyzers

 IME SA provides a wide range of gas analyzers using different analysis modules according to the sample characteristics and the intended applications.

 

The Non-Dispersive Infrared (NDIR) Gas Analyzer that allows a selective analysis of the concentration up to a maximum of four sample components is usually provided in a Continuous Emissions Monitoring System (CEMS) or in a Process Analysis integrated solution.

 

MEASURING PRINCIPLE:

 

Absorption of the non-dispersive infrared radiation at a wavelength of ʎ = 2.5 … 8 µm.

 

COMMON APPLICATIONS:

 

• Emissions Monitoring;
• Combustion Control;
• Gas Monitoring in Landfills;
• Gas Manufacturing/ Purity Control;
• Burners Optimization;
• Process Control, for example in Chemical Industries, Iron and Stainless Steel, Energy Plants;
• Fermentation Process Monitoring;
• Analysis of Blast Furnace Gas.

 

EXAMPLES OF THE COMPONENTS AND THE RESPECTIVE MINIMUM MEASUREMENT RANGES:

 

• CO 0…10 ppm;
• CO2 0…5 ppm;NO 0…150 ppm;
• SO2 0…25 ppm;
• N2O 0…20 ppm;
• CH4 0…50 ppm;
• C3H8 0…50 ppm;
• C2H4 0…300 ppm;
• R134 0…50 ppm.

 

CALIBRATION:

 

Automatic calibration by internal control;

Zero and span are obtained from calibration cuvettes or standard gas.

 

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