| 摘要 |
<p>An ultrasonic transducer includes a wear plate 2, an active element 8 arranged rearwards of the wear plate and a rigid block 16 arranged rearwards of the active element and configured to provide a non-resonant backing mass for the active element. The wear plate extends across the active element and rearwards so as to provide a cap over the active element and sides 25 of at least a forward portion 24 of the rigid block. A heat extracting strip 5 may be provided between the plate 2 and other components. The arrangement increases the efficiency and operating temperature range of the transducer.</p> |
