Detection of Smokeless Pyrolysis of Organic Materials by Metal Oxide Gas Sensor

In this work, we describe a new approach to the detection of pyrolysis gases produced at smoldering of organic materials using a single metal oxide gas sensors based on SnO 2 and operating in fast temperature scanning mode. The results of experimental comparison of the selectivity of standard electrochemical CO sensor and of the metal oxide gas sensors based on SnO 2 at smokeless pyrolysis of various organic materials are presented. The experiment showed high selectivity of metal oxide sensor at smoldering fire detection compared to the standard electrochemical sensor used in fire alarm system.