| 摘要 |
An end of life monitor apparatus for a filter that removes an undesirable gas including: (a) an elastic material, which degrades in the presence of the undesirable gas; (b) a support member coupled to the elastic material; and (c) an indicator component movable to a filter end life position, coupled to the elastic material, whereby the elastic material is stretched between the support member and the indicator component, wherein the indicator component is biased to move to the filter end life position but is restrained by the elastic material from moving to the filter end life position, wherein degradation of the elastic material allows the indicator component to move to the filter end life position.
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