Method and system for upstream occlusion detection

Details Method and system for upstream occlusion detection Method and system for upstream occlusion detection

1989-11-08

1992-03-17

Smith, Leonard E.

Pumps

Condition responsive control of pump drive motor

Single motor control element responsive to means sensing...

417474, 604 67, F04B 4312, F04B 4902

Patent

active

050963856

ABSTRACT:
The method and system for detecting occlusion in a fluid line upstream of a pump concerns a fluid pump with a pump cycle in which the upstream pressure of the fluid line is communicated to the downstream portion of the fluid line. A pressure sensor located downstream of the pump is capable of measuring a relatively large negative-going pressure in the fluid line. A signal is generated to indicate occlusion based upon detection of negative-going pressure.

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