Flow measurement and control with bubble detection

Details Flow measurement and control with bubble detection Flow measurement and control with bubble detection

2011-08-02

2011-08-02

Bahta, Kidest (Department: 2123)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Mechanical control system

C700S283000

Reexamination Certificate

active

07991510

ABSTRACT:
Systems and methods for liquid flow sensing and control for use with a variety of different types of liquid flow measurement and control systems. The liquid flow sensor system senses a flow signal indicative of the flow rate of the liquid flowing in a sensor conduit and analyzes the flow signal to determine, by detecting characteristic changes in the signal, whether a bubble is present in the sensor conduit. Where the system determines that a bubble is present, it may generate an alarm signal indicative of the presence of the bubble. A flow control system incorporating the flow sensor as a feedback source may respond to the detection of a bubble by temporarily freezing the flow control parameters until the bubble has exited the sensor conduit. The flow control system can implement procedures for clearing a bubble from the sensor conduit where the system detects that the bubble has become stuck.

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patent: 2005/0124929 (2005-06-01), Katz et al.
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