Title: Development of a carbon monoxide detector depending on positive ion emission from heated palladium
Abstract: An experimental system and procedure was developed to determine the concentration of carbon monoxide in air. The unit was designed to operate at the lowest possible temperature range, consistent with the optimum signal-to-noise ratio, to reduce the hazard of igniting explosive gas mixtures. Experiments indicated that the system provided a useful signal for carbon monoxide/air ratios as low as 25 parts per million. The system7operated by sensing the positive ion current emitted by hot palladium. In the presence of carbon monoxide the rate of emission from the palladium surface increases and is proportional to the concentration of carbon monoxide in the air stream. This ion cur rent change is used as an indicator of the ambient CO level.
Publication Year: 1972
Publication Date: 1972-01-01
Language: en
Type: article
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