Qualitative Comparison of Commercial NO2 Sensors and Selection Criteria for Various Applications

Gas sampling and sensing is a domain of great importance nowadays. Various gases play a vital role in different industries ranging from process industries to bio medical engineering. The measurement of concentration of hazardous gas components like NO2 is in high demand and hence many researchers are attracted towards the development of NO2 sensors on the basis of various working principles. A single sensor cannot be the best sensor for all applications. This fact leads to in the need of selection criteria for the selection of the sensor for any industrial application. This paper presents a selection criterion for the selection of NO2 sensor based on its important features and characteristics. Considering this one can select most suitable NO2 sensor for a typical application. This paper also presents a qualitative comparison of commercially available NO2 sensors which can be a handy tool for someone who is interested in the measurement of NO2 concentration for certain application.