FLOW RATE MEASUREMENT DEVICE AND FLOW RATE MEASUREMENT METHOD

摘要

Provided is a flow rate measurement device for measuring the flow rate of gas flowing through the inside of piping. The flow rate measurement device is provided with: an ultrasonic transducer installed in contact with the piping; and a flow rate calculation section for calculating the flow rate of the gas on the basis of the result of reception of ultrasonic waves by the ultrasonic transducer. The ultrasonic transducer includes: an ultrasonic oscillation section for emitting the ultrasonic waves toward the inside of the piping; and an ultrasonic reception section for receiving the ultrasonic waves. At least the ultrasonic oscillation section has a focusing means for focusing the ultrasonic waves at the center of the piping.