Patent ID: 7963176

Claim:
Ultrasonic flow rate measuring device for measuring a flow rate through a line through which a medium flows, comprising: at least one ultrasonic transducer; a guide frame for guiding and holding the ultrasonic transducer, the guide frame having a longitudinal axis; and, a fixing mechanism connected to the ultrasonic transducer to move the ultrasonic transducer in a direction perpendicular to the longitudinal axis toward or away from the line, and connected to the guide frame to move the ultrasonic transducer in a direction parallel to the longitudinal axis, and to selectively fix the ultrasonic transducer to the guide frame at a position and to selectively release the ultrasonic transducer from the position, wherein the fixing mechanism simultaneously fixes the ultrasonic transducer to the guide frame when moved toward the line and simultaneously releases the ultrasonic transducer from the guide frame when moved away from the line.