Abstract

Further studies are reported on a novel room temperature tin oxide–platinum sensor for carbon monoxide (CO). The expected porous nature has been confirmed by scanning electron microscope pictures of these sensors. Pore sizes were 0.1–10 μm. Recovery studies confirm that high resistance sensors recover more quickly. During the recovery a second fire can be detected and there are no signs of self-poisoning by CO. Preliminary results are presented for temperature and humidity cycling.

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