Abstract: An oxygen generating device includes a housing, an inlet formed in the housing, a compressor, and a sieve module. The device further includes a self-serviceable filter disposed between the compressor and the sieve module. The method for generating an oxygen-enriched gas includes introducing a feed gas into the oxygen generating device via the inlet, compressing the feed gas via the compressor, filtering the compressed feed gas by removing at least one contaminant from the feed gas via the self-serviceable filter, introducing the filtered feed gas into the sieve module, and generating the oxygen-enriched gas from the filtered feed gas.

Abstract: A method of removing water from an inlet region of an oxygen generating system is disclosed herein. The method includes condensing, in an inlet region of the oxygen generating system, at least a portion of water vapor from a feed gas to water, and removing the water from the oxygen generating system prior to introducing the then-at least partially dehumidified feed gas to at least one sieve bed operatively disposed in the oxygen generating system.

Abstract: A sensory apparatus including a substrate including a plurality of sensors to obtain an analyte profile, the sensors including an ion-selective sensor capable of measuring ion content and a chlorine sensor capable of measuring chlorine content, is disclosed. A method of generating an analyte profile, including measuring, directly or indirectly, properties including free chlorine concentration, pH, calcium ion concentration, carbonate ion concentration, and bicarbonate ion concentration, concurrently on a contiguous sample, is also disclosed.