FLOW RATE MEASUREMENT DEVICE AND FLOW RATE MEASUREMENT METHOD

摘要

PROBLEM TO BE SOLVED: To provide a flow rate measurement device which has excellent versatility and can accurately measure the flow rate of gas flowing in a pipeline even under different measurement conditions.SOLUTION: A flow rate measurement device for measuring the flow rate of gas flowing in a pipeline comprises: an ultrasonic transducer which is installed in contact with the pipeline; and a flow rate calculation part which calculates the flow rate of gas on the basis of the reception result of the ultrasonic wave by the ultrasonic transducer. The ultrasonic transducer comprises: an ultrasonic oscillation part which oscillates an ultrasonic wave toward the inside of the pipeline; and an ultrasonic reception part which receives the ultrasonic wave. At least the ultrasonic oscillation part includes convergence means which converges the ultrasonic wave to the center of the pipeline.SELECTED DRAWING: Figure 1