Carbon dioxide aanalyzer is a gas detector that determines the concentration of CO2 in an environment. This is important in many applications, as the presence of this gas may cause safety issues. CO2 gas is also a common byproduct of combustion, so it needs to be monitored closely in power plants and other industrial applications to comply with regulations around the world.

Depending on the application, there are several sensing technologies available for these analyzers. Some use NDIR sensors that detect CO2 by comparing the absorption of infrared radiation by the sample to a reference sample. This method eliminates the need for chemical calibration and provides a reliable measurement.

Other sensors are based on thermal conductivity. In these CO2 gas analysers, the sample is heated and the resulting temperature change is measured by sensors. This is a simple and robust technique that can be interfaced to a data-logging system.

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A third option is a python-based system that uses two infrared cells to separate the gases. This allows a single instrument to measure both gases simultaneously, eliminating the need for multiple instruments and reducing installation costs. This system can also be interfaced to a data-logging and alarming system.

Carbon dioxide analyzers are also used in the mining and cement industries to ensure that production is meeting regulatory requirements. ELTRA’s CW-800 can accurately and reliably measure both water and carbon dioxide in a range of materials, including limestone, gypsum and cement.