Ultrasonic flow measuring method
AssigneesInternational Hydrosonic Co., Ltd., Hydrosonic International Co., Ltd.
InventorTyan Khak Su
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Abstract
An ultrasonic flow measuring method comprises steps of selecting a section area in a right angle to an ultrasonic transit trajectory line for measuring a flow velocity as a section area necessary for a flow measurement; and multiplying a flow velocity component of a direction corresponding to an ultrasonic transit trajectory, which is directly measured by an ultrasonic wave, by the section area thereby to compute a flow or flowrate, so that a flow measuring error and a measuring error of a section area can be significantly reduced, thereby enhancing the accuracy of the flow measurement.
Claims4
An ultrasonic flow measuring method for measuring a flow velocity at a plurality of chords on a section of fluid using an ultrasonic wave and multiplying the flow velocity measured by the fluid section thereby to compute a flow comprising steps of:
- selecting a section area Sφ cutting the fluid flow at an angle φ Of 45° to a direction of the flow velocity as a flow measuring section;
- measuring the flow velocity on a plurality of chords dividing the section area Sφ using an ultrasonic wave to compute the flow velocity at the section area Sφ;
- and,
- multiplying the section flow velocity by the section area Sφ to compute the flow, in which the flow computing section area is Sφ tan φ, if the angle φ is not secured to be 45°.
Dependencies are inferred from the claim text.