FTIR Analyzer

The FTIR (Fourier Transform InfraRed) analyzer, like the NDIR analyzer, uses the property of molecules with a sufficiently large dipole moment to absorb light in the infrared spectrum. However, where NDIR measures at a specific wavelength, FTIR uses the entire infrared spectrum.

Calcmet®

The Fourier transformation is performed by Calcmet®, an advanced software program specifically developed for FTIR analysis. Calcmet is capable of determining the concentration of up to 50 components in real-time.

Post-analysis Data Evaluation

For post-analysis, it is possible to use the extensive library. This library contains qualitative spectra of approximately 5,000 gases. Depending on the existing gas matrix, multiple gases can be measured from the sub-ppm range up to 100 volume percent.

Various Options

Our FTIR analyzers can be supplied with unheated or heated measurement cells up to 180 °C. The choice depends on required detection limits, the water dew point, and any acid dew point. Using heated cells simplifies sample conditioning before analysis, especially in emission monitoring. The FTIR MCT detector is Peltier-cooled and kept at a constant temperature for excellent signal-to-noise ratio and high accuracy. For specific R&D applications, CR series models are available where the detector is cooled with liquid nitrogen (for minimal thermal noise) and the cell is optimized in dimension and material for maximum accuracy and fast response times.

Key Features of the FTIR Analyzer

FTIR technology is available in both portable and stationary analyzer systems. Different models are available depending on the application. From nitrogen-cooled systems for research use, to closed systems for titanium dioxide pigment analysis in paints, to heated systems (180°C) for saturated gas streams. Some analyzers from the manufacturer Gasmet are MCERTS and TÜV certified and comply with QAL1 / EN15267-3 for Continuous Emission Monitoring Systems.

FTIR analyzers are available in the following versions:

• 19” rack versions: CX4000, CX4015.
• Mobile versions: DX4000, DX4015.
• Continuous Emission Monitoring Systems: CEMII.

Applications

FTIR is widely used in the following processes:

• Monitoring emissions from process streams using Continuous Emission Monitoring Systems.
• Process optimization.
• Monitoring greenhouse gases from soil.
• Titanium dioxide in paint using closed systems.
• Catalyst performance monitoring.
• Carbon dioxide storage studies.
• Engine exhaust emission measurements.
• Semiconductor industry processes.
• Anesthetic gas detection.
• Compressor emissions testing.
• Phosgene monitoring.