Ultrasonic multi-channel flow measuring method

Details Ultrasonic multi-channel flow measuring method Ultrasonic multi-channel flow measuring method

G - Physics

01

F

G01F 1/66 (2006.01) G01P 5/24 (2006.01)

Patent

CA 2329933

An ultrasonic flow rate measuring method comprises steps of measuring an inner diameter of a pipe in a manner to subtract a corrosive resistance layer and its possible thickness deviation from the maximum deviation of an inner diameter presented as a pipe size within the range of being able to be estimated, measuring a flow rate Q I of the ideal circular section having the measured inner diameter based on the ultrasonic multi-channel flow rate measuring method, calculating a flow rate Q II of the remaining section according to a flow velocity distribution curve and adding the flow rate Q II to the flow rate Q I to calculate a total flow rate Q. Therefore, the method can enhance the accuracy of the flow rate measurement, if the section area of a pipe can't be measured, exactly, and the inner diameter of the pipe has a deviation due to an ovalness.

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