NOx Analyzer Nitrogen Oxide Measurement Guide
Apr 15 2026 Product Gas DetectorNitrogen oxides (NOx), primarily composed of nitric oxide (NO) and nitrogen dioxide (NO2), are significant pollutants that contribute to environmental issues such as smog formation, acid rain, and the depletion of the ozone layer. Accurate measurement of NOx is crucial for regulatory compliance, air quality monitoring, and research purposes. This guide provides an overview of NOx analyzers, which are essential tools in measuring these compounds.
NOx analyzers operate based on various principles including chemiluminescence, infrared absorption, and electrochemical detection. Among these methods, chemiluminescence is widely recognized for its accuracy and reliability. In this process, a reaction between NO and ozone produces light emission proportional to the concentration of NO present in the sample gas. The emitted light is measured by a photodetector to quantify the amount of NO. To measure total analyseur de NOx concentration, a converter transforms all NO2 into NO before analysis.
Calibration is vital for ensuring precise measurements with any analyzer. Calibration involves using known concentrations of calibration gases to adjust the instrument’s response accurately. Regular calibration checks help maintain data integrity over time by compensating for potential drifts or deviations in sensor performance.
Sampling plays a critical role in obtaining representative data from different environments such as industrial emissions or ambient air monitoring stations. Proper sampling techniques ensure that collected samples reflect true atmospheric conditions without contamination or loss due to reactions occurring within sampling lines.
Maintenance also contributes significantly towards reliable operation; regular inspections prevent malfunctions while timely replacement parts reduce downtime during critical periods like regulatory audits or scientific studies where continuous data logging might be required over extended durations without interruption caused by equipment failure.