本文将简要介绍几种过滤器监测技术，然后重点研究比水头损失累积率（SHAR）。SHAR有一个单位为ft/MGD。Hr或水头损失/过滤率*过滤器运行时间。SHAR概念类似于物理学中的平均加速度概念。SHAR同时考虑了运行时间和过滤速率导致的水头损失累积。饮用水专业人员仅使用过滤器水头损失率（ft/hr）。水头损失率不考虑过滤率。因此，只有当过滤速率恒定时，水头损失率才有意义。包括参考，数字。

This paper will briefly examine several filter monitoring techniques and then focus on the study of specific head loss accumulation rate (SHAR). SHAR has a unit of ft/MGD.Hr or head loss/filtration rate* filter run time. The SHAR concept is similar to the average acceleration rate concept in physics. SHAR takes into consideration head loss buildup due to both run time and filtration rate. Drinking water professionals have only used filter head loss rate (ft/hr). Head loss rate does not consider filtration rate. As a result, head loss rate is only meaningful when the filtration rate is constant. Includes reference, figures.