Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system
Reexamination Certificate
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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Duan Hao
Ellec Christophe
Tint Aaron S.
Bahta Kidest
Brooks Instrument, LLC
SNR Denton US LLP
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