Sonar: Hydrophone, Underwater Transducer.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Flush-Mounting Transducer

Flush-Mounting Transducer

BII7720  Flush-Mounting Transducer: SONAR, NDT, AE Transducers.

BII7720 series transducers mount through a hole or counterbore hole cut in the housing of SONAR/NDT/AE instruments, apparatus, vehicles (or towed streamlined body), pipes, or the wall of swimming pools. The flush-mounting design of these transducers minimizes surface discontinuity between the transducer and the mounting wall (or hull), and allows for smooth water flow over the surfaces, resulting in much lower induced acoustic noise (hydrodynamic noise, flow noise), less drag/resistance, avoidance of accidental collision and better acoustic performance for the underwater devices in motion such as towed fish/bodies, ROV/AUV/UUV, robots, etc... Low-profile flush installation protrudes only 4.75mm outside the housing with streamlined flange.
Transducers emit and receive conical beams, and are designed for use as components in communication, positioning, navigation, fishery, oceanography, Seafloor-mapping, Marine Animals research, NDT/AE, etc.... The housing can be mounted on different materials such as woods, plastics, fiber glass, ceramics and metals. Marine sealants shall be used for sealing, bedding and installation. The depth rating is limited by the sealing performance of the cured marine sealants.
In NDT and AE applications (as immersion transducers or contact transducers), the couplant (water, gel, grease, oils, commercial couplant, and shear-wave couplant) is a necessary material to provide efficient acoustic coupling between the transducer face and the subject (piece under test).

Applications  
Towed Sonar/Bodies, Vessels in Motion, Sonobuoy, Towfish.
Sonar Navigation, Inspection and Survey, NDT/AE Instruments.
Surface Continuity for Low Acoustic Perturbation.
Sound Velocity Profiler, Bathymetric Sounder, Depth Sounder.
Bioacoustics: Marine Animals, Fishery and Plankton.
Communication/Remote Control/Telemetry/Positioning.
Object Detection/Tracking/Avoidance, Fish finder.
Aquarium/Pool/Underwater Security, Alarm System.
Precision Distance Gage, Altimeter, Liquid Level.
Process Measurement and Control.
   
Flush-Mounting Transducer Datasheet

lush-Mounting Transducer

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