Sensor array for manhole gas analysis

A sensor array consisting of four individual gas sensors (methane, carbon dioxide, carbon monoxide, hydrogen sulfide, ammonia) has been developed for analysis of individual gases from a mixture of various explosive and toxic gases. Manhole gas of different areas has been collected and analyzed in lab by chemical process. The sensor array has been constructed by using different gas sensors like Methane, Carbon monoxide, Carbon dioxide, Hydrogen sulfide and Ammonia which are commonly available in manhole gas mixture. For cross sensitivity of the sensors an intelligent system is being developed to find out the actual concentration of gas from a gas mixture.