An electroacoustic transducer device

摘要

The electroacoustic transducer device 10 comprises an electroacoustic transducer, preferably piezoelectric, 12 within a housing 25 such that there is a region 32 between the transducer 12 and the housing 25. This region surrounds the transducer 12 but does not cover a transmitting surface 42 of the transducer coupling means 36. The said region is filled or is at least partly filled with an acoustically-attenuating closed-cell foam 35 at least a part of which is coated with an adhesive sealant 35 which provides a water-resistant seal between the transducer 12 and the housing 25. The device may be used within an acoustic fluid-flow meter and/or an acoustic anemometer.