Environmental Monitoring:

Monitoring air quality and pollutants.
Example: Measuring ambient air SOx and NOx levels in urban areas.

Industrial Emission Control:

Ensuring compliance with environmental regulations.
Example: Monitoring stack emissions in power plants for SOx, NOx, and opacity.

Process Control:

Optimizing combustion efficiency and product quality.
Example: Controlling oxygen levels in furnaces and kilns.

Safety Monitoring:

Detecting hazardous gases in workplaces.
Example: Monitoring CO levels in confined spaces to prevent poisoning.

Automotive Emission Testing:

Ensuring vehicles meet emission standards.
Example: Measuring NOx and CO levels in vehicle exhausts during inspection and maintenance.