公开(公告)号：US20170328865A1

公开(公告)日：2017-11-16

申请号：US15591254

申请日：2017-05-10

Applicant: General Electric Company

Inventor： Xiaolei Shirley Ao ,  Zheng Gong ,  Ji-yong Wang ,  Thomas Edward Michalowski

IPC: G01N29/024 ,  G01N33/28 ,  G01N33/18

CPC classification number: G01N29/024 ,  B01D17/12 ,  G01F1/66 ,  G01F1/74 ,  G01N33/18 ,  G01N33/28

Abstract: A method for identifying a fluid interface in a conduit through which at least a first fluid and a second fluid are configured to pass, includes transmitting, via an ultrasonic flow meter coupled to the conduit, an acoustic signal into the conduit. A reflected acoustic signal is received in the ultrasonic flow meter and the amplitude of the reflected acoustic signal is determined. The average and standard deviation of the amplitude are calculated and, if the standard deviation exceeds a predetermined threshold, the fluid interface is identified as being present in the conduit.