| 摘要 |
PROBLEM TO BE SOLVED: To enhance fluid measuring performance. SOLUTION: This fluid measuring method having a process for transmitting an acoustic signal from the first position 4 to a fluid interface 10, a process for receiving a reflected signal R1 reflected by the fluid interface 10 and returned therefrom, and a process for determining the first period t1 between the transmission and the reception of the reflected signal has a process for receiving a following reflected signal R2 generated by reflecting the reflected signal hereinbefore to be returned to the fluid interface 10, and a process for using information provided from the following reflected signal for the determination of a fluid amount. |
