AC Impedance Sensor for Collective Protection Filter Residual Life Indicator

Guild Associates, Inc. proposes to develop and evaluate an active electrochemical sensor based residual life indicator (RLI) for adsorptive carbon filters. The sensing system of the RLI will operate by analyzing the electrochemical state of the carbon within the filter and evaluate the remaining adsorptive reactive capacities of the filter. The sensor design will be challenged against an array of common environmental contaminants. Data from the experiments will be used to determine the efficacy of the sensing system, to develop the algorithms for the integrated devices, and to establish design paramanters and miletestones for the development of a prototype device. Succssful completion of the entire project will provide the miliatry with a commercially viable sensor capable of monitoring the status of adsorbent carbon filters.