Filter condition indicator having moveable sensor and aggregate flow counter

摘要

A fluid filter monitoring system. A flow switch positioned in juxtaposition to a fluid flow path monitors fluid flow and provides an indication during those time periods when fluid is flowing at a rate exceeding a predetermined flow rate through the flow path. A monitoring circuit coupled to this indication provides various audible and/or visible indicators corresponding to detected conditions. The preferred design includes a timer for monitoring the time duration since the filter was installed as well as monitoring the time duration water or other fluids are flowing through the filter. Adjustably settable visible and/or audible indications are provided to indicate when the filter is reaching the end of its useful life as well as when this life period has been exceeded.