Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1997-04-02
1999-02-16
Drodge, Joseph W.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210 87, 210 93, 222 36, 222 40, 22218906, B01D 35143
Patent
active
058716513
ABSTRACT:
A fuel dispenser having a filter status sensor includes a fuel delivery path for delivering fuel from a station storage tank to a vehicle; a fuel filter in the delivery path for filtering fuel flowing in the delivery path; a flow monitor in the delivery path for measuring fuel flow in the delivery path; and a controller associated with the flow monitor adapted to determine and compare a first flow rate taken during a first cycle with a second flow rate taken during a second cycle. The controller provides a filter status signal when the first and second flow rates differ by more than a predetermined difference indicative of an unclean fuel filter.
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PCT International Search Report for PCT/GB 98/00981, undated.
Drodge Joseph W.
Gilbarco Inc.
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