Purpose-built to detect ultra-low concentrations of NOx emissions in industrial and commercial combustion applications, the Rosemount XECLD Continuous Gas Analyzer uses highly stable, solid-state Chemiluminescence Detection (CLD) technology to help operators prove compliance with environmental regulations. Designed for optimum reliability and care-free maintenance, the XECLD eliminates vacuum pumps, reducing a source of vibration which can compromise equipment integrity and measurement reliability.