Valve calibration method and apparatus

Details Valve calibration method and apparatus Valve calibration method and apparatus

2003-06-27

2009-06-09

Lee, Kevin L (Department: 3753)

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

C137S486000, C137S487500, C073S001160, C073S001340, C702S100000

Reexamination Certificate

active

07543595

ABSTRACT:
An arrangement for calibrating a Venturi valve includes a source of flow measurements and a processing circuit. The Venturi valve has a variable shaft position and is operable to provide an air flow corresponding to the variable shaft position. The processing circuit is operable to provide a plurality of voltages to an actuator, the actuator operable to change the variable shaft position dependent on said plurality of voltages. The processing circuit is also operable to receive from the source of flow measurements a flow measure for each variable shaft position corresponding to each of the plurality of voltages. The processing circuit is further operable to store information representative of the relationship between each of the plurality of voltages and the flow measures.

REFERENCES:
patent: 5003810 (1991-04-01), Jepson et al.
patent: 5304093 (1994-04-01), Sharp et al.
patent: 5435779 (1995-07-01), Sharp et al.
patent: 5504681 (1996-04-01), Sherman
patent: 5950668 (1999-09-01), Baumann
patent: 5975126 (1999-11-01), Bump et al.
patent: 6539968 (2003-04-01), White et al.
patent: 0 834 723 (1998-04-01), None

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