| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple, inexpensive, and highly reliable ultrasonic sensor for measuring a high-temperature fluid, which does not require forced water cooling or air cooling. SOLUTION: The ultrasonic sensor for measuring the high-temperature fluid is provided with: a tubular casing tube (1) having a front end face on which an opening is formed at the central part; a heat insulating tip part (2) to be fitted into the opening (1c) formed on the front end face of the casing tube; a piezoelectric part (4) disposed behind the tip part and for generating an ultrasonic wave; a heat conductive rear end part (5) disposed behind the piezoelectric part; and heat conductive pressing mechanisms (6, 7, and 9) for pressing the rear end part from the back. COPYRIGHT: (C)2006,JPO&NCIPI
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