A Tour of the Cyranose® 320 Technological advances over the past several years are prompting a revolution in analytical chemistry. This revolution has been happening on two fronts simultaneously. First analytical instruments are changing from large, bulky laboratory devices to miniature, low power and portable devices.... Cyrano Sciences' Sensor Technology Cyrano Sciences' propriety sensor technology, used in the Cyranose® 320, originated in the labs of Professor Nathan Lewis at the California Institute of Technology. The technology consists of individual thin-film carbon-black polymer composite chemiresistors configured into an array.... On Board Signal Processing An on board signal processing for Cyranose® 320 is described in this paper. The whole signal processing includes preprocessing, post-processing and algorithms utilization. The data generated by the electronic nose - Cyranose® 320- is a set of relative changes of the resistances of the polymer composites during the exposure to the odor....