| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic flowmeter capable of accurately correcting a flow rate even when the kind or concentration of a measuring fluid changes. SOLUTION: The ultrasonic flowmeter 1 includes: a pipe having two straight portions 2 and 3; first ultrasonic transducers 5a and 5b provided in the first straight portion 2; second ultrasonic transducers 6a and 6b provided in the second straight portion 3; and a control apparatus 7 connected to the individual ultrasonic transducers 5a, 5b, 6a, and 6b. The control apparatus 7 measures flow rates in the individual straight portions 2 and 3, by performing transmission and reception of ultrasonic waves So by the use of the individual ultrasonic transducers 5a, 5b, 6a, and 6b, and flow-rate correction is performed on the basis of the difference between those measurement values. COPYRIGHT: (C)2010,JPO&INPIT |
