| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic flowmeter capable of preventing mismeasurement of propagation time and measuring an accurate flow amount of a measurement fluid even in a case where temporal or physical changes occur in the measurement fluid.SOLUTION: A one-wave difference error detection processing unit 32 detects the occurrence of a one-wave difference error, with temporal or physical changes of a measurement fluid. A set gain adjustment processing unit 33 performs set gain Gau and Gad adjustment processing that does not depend on the detection of the predetermined n-th wave of a received signal Sgr of ultrasonic beams. |
