Ultrasonic transducer and ultrasonic flowmeter, ultrasonic flowmeter, ultrasonic densitometer, and manufacturing method

摘要

Problem to be solved: to provide an ultrasonic transducer capable of stably measuring a high temperature and high humidity fluid for a long time and a flow meter, a flow meter and a concentration meter using the same.In an ultrasonic transducer comprising a piezoelectric body and an acoustic matching arranged on one surface of the piezoelectric body, the acoustic matching body 2 divides the closed space formed by the top plate 8, the bottom plate 9 and the side wall 10, and the enclosed space The vertical partition 12 is formed in a substantially vertical direction with respect to the bottom plate in close contact with the top plate and the bottom plate.Diagram