ULTRASONIC VIBRATOR AND ULTRASONIC FLOWMETER

摘要

PROBLEM TO BE SOLVED: To prevent possibility of flame occurrence in a flow rate measurement part or the inside of an ultrasonic vibrator to improve safety of an ultrasonic flowmeter. SOLUTION: A piezoelectric body 18 constituting the ultrasonic vibrator 5, 6 is enveloped by a metal case 19 such that the piezoelectric body 18 is blocked from a combustible measured fluid, and the case 19 and the flow rate measurement part 1 are set to the same potential. Thereby, the safety of the ultrasonic flowmeter can be improved. COPYRIGHT: (C)2004,JPO