Flow rate control system

Details Flow rate control system Flow rate control system

G - Physics

05

D

341/38.5

G05D 7/06 (2006.01)

Patent

CA 1224554

23 ABSTRACT OF THE DISCLOSURE A flow rate regulating valve is mounted on a pipe for passing there through the fluid to be controlled. The fluid pressure is detected at the primary side and the secondary side of an orifice provided within the pipe. The fluid temperature is also measured in the vicinity of the pressure measuring location. The flow rate is calculated based on the primary and secondary pressures and temperature detected. The degree of opening of the valve is controlled in a direction to decrease the deviation of the calculated flow rate from the flow rate setting in accordance with the deviation and the polarity thereof.

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