The Carbondio gas sensor line - high resolution NDIR sensors for carbon dioxide (CO2) detection

Carbon dioxide (CO2) is a non-toxic and non-flammable gas, which is why it was once widely used as a primary refrigerant. However, because very high pressure is required for cooling with CO2, this natural gas has been increasingly replaced by CFC-based refrigerants, where the pressure is typically lower. However, the low global warming potential of CO2 and the increasing availability of components suitable for high-pressure applications have brought CO2-based refrigeration back to the forefront for medium- and large-scale refrigeration systems in recent years. Normally, a two-stage system is used, which works with ammonia (NH3) in the first stage, for example, and with CO2 in the second - the main stage. Such systems are basically very efficient.
Due to the large amount of refrigerant in a CO2 refrigeration system, the high pressure as well as the installation locations of the systems (normally small chambers), CO2 monitoring is mandatory. This is not only to reduce potentially high CO2 emissions in the event of a leak, but also to ensure the prescribed maximum workplace concentrations (MAK values) in the working area around the system. Pewatron's Carbondio-NDIR series sensors are ideal for detecting CO2 concentrations in the range of 500 ppm up to 50%. Carbondio ppm sensors are also an excellent choice for leak detection. Gas extraction and analysis are recommended via forced flow, since natural background CO2 concentrations make it difficult to define a suitable zero point. When developing the Carbondio gas sensor line, the focus for Pewatron was on signal stability and high signal resolution. With a constant atmospheric CO2 level of nearly 400 ppm, both the 500 ppm sensor version and the 1000 ppm version offer numerous advantages. The sensors are also equipped with standardized interfaces and can be easily integrated into a system.