首页>
外国专利>
Filter cartridge having cone of visibility for end-of-service-life-indicator (ESLI)
Filter cartridge having cone of visibility for end-of-service-life-indicator (ESLI)
展开▼
机译:具有视锥面的滤芯,用于使用寿命终止指示器(ESLI)
展开▼
页面导航
摘要
著录项
相似文献
摘要
A filter cartridge 12 that includes a filter material 42, an end-of-service-life-indicator 40, a cartridge housing 22, and a window 38. The filter material 42 and ESLI 40 are disposed in the housing, and the ESLI 40 may be viewed through the window 38. The window 38 is configured such that the ESLI 40 can only be seen within a cone defined by an angle θ of 20 to 70 degrees. The limited viewing range precludes reader error when examining the ESLI for color change.
展开▼