公开(公告)号：US4814090A

公开(公告)日：1989-03-21

申请号：US91221

申请日：1987-08-31

Applicant: Gerhard Kunz ,  Johannes Goebel

Inventor： Gerhard Kunz ,  Johannes Goebel

IPC: B01J49/00 ,  G01N27/04

CPC classification number: B01J49/0095

Abstract: A temperature compensated differential between electrical conductivity measurements of a filter medium during passage therethrough of liquid being treated and measurement of the liquid alone after treatment, is utilized to calculate a conductivity ratio based on a reference value reflecting a minimum electrical conductivity measurement under ion saturation conditions in an ion-exchange filter. The filter is switched from an operational mode to a regenerating mode in response to detection of a predetermined conductivity ratio corresponding to approach of the filter to a clogged condition.

Abstract translation: 在处理液体通过期间过滤介质的电导率测量和处理后单独测量液体之间的温度补偿差异被用于基于在离子饱和条件下反映最小电导率测量的参考值来计算电导率 在离子交换过滤器中。 响应于检测到对应于过滤器接近到阻塞状态的预定电导率，将过滤器从操作模式切换到再生模式。