ULTRASONIC MULTI-CHANNEL FLOW MEASURING METHOD

An ultrasonic flow rate measuring method comprises steps of measuring an inn er 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 presente d as a pipe size within the range of being able to be...

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Bibliographische Detailangaben
1. Verfasser:	SU, TYAN KHAK
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PHYSICS TESTING
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Beschreibung
Zusammenfassung:	An ultrasonic flow rate measuring method comprises steps of measuring an inn er 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 presente d 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 accurac y 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.