Sonar: Hydrophone, Underwater Transducer.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Communication & Miniature Transducer: Toroidal Beam

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BII7510 Series Communication and Miniature Transducer: Broadband, Low to Medium Qm

Low-Qm BII-7510 series are broadband high power communication transducers with toroidal directivity pattern for uses in voice and message channels underwater especially in the horizontal plane, which is designed for analog and digital communication underwater. Carrier frequencies of 3.5 to 360 kHz support long range and short range communication underwater. The information can be exchanged from 10km away with low frequency sounds.
Medium-Qm BII7510 series are miniature transducers with toroidal directivity pattern for uses in underwater communication especially in the horizontal plane, and in material study and medical research as ultrasonic sources and sensors. Frequencies of 50 to 400 kHz and sound levels of 180 to 190 dB μPa support short to long range sound propagation in water, liquids, rubber-like material, and solids. Their miniature sizes make them be suitable to be embedded in materials.

Modulations
Pulsed FSK, Chirp-type FSK, Frequency Hopping DSSS
PSK CDMA/DSSS
Typical Applications  
Remote Control and Telemetry
Artificial Acoustic Target, Echo-Repeater
Acoustic Deterrent to Marine Animals
Playback Marine Animal Voices/Calls/Whistles/Songs/Clicks
Material Study and Medical Research
Underwater Acoustic Network, Acoustic Elements for Arrays
Diver Communication, Underwater Telephone
Pinger/Tag/Locator/Transponder/Beacon/Acoustic Release
Marine Animal Behavior Research, Bioacoustic Stimuli
Hydrophones, AE Sensors, Ultrasonic Sources
Related Products  
BII-5000 Power Amplifier BII-8030 Underwater Acoustic Transmitter
Underwater Transducer: SONAR, NDT, and HIFU BII-8080 Transmitting & Receiving System
BII-7700 Hemispherical Transducer: 10kHz to 1MHz BII-7520 Omnidirectional Transducer: 10 to 150 kHz
BII-7600 Conical Beam, up to 200kHz BII-7590 Free Flooded Ring Transducer: Broadband, Deep Ocean
BII-7760 Wide Conical Beam Transducer: Cover 60°, up to 2MHz BII-7620 Directional Low Frequency Transducer
 
Specification
Transducer fs kHz Qm TVR dB µPa/V@1m
FFVS dB V/µPa
Size ΦDxH Documents
BII-7510 Series 50 to 400 2 to 6.5 130 to 138 -188 to -208 Small & Miniature Datasheet
BII-7511 48 3 137.0 -202.0 Φ28.5x52.5mm Datasheet
BII-7511Q 40 1.5 136.5 -200.0 Φ38x56mm Datasheet
BII-7511H 30 to 33 2.5 142.0 -194.2 Φ38x58mm Datasheet
BII-7512 20 2.0 139.0 to 142.0 -195.0 Φ54x76.2mm Datasheet
BII-7513 14 3.5 138.0 -191.5 Φ89x95mm Datasheet
BII-7514 8 1.2 140.0 -188.0 Φ114x95mm Datasheet
BII-7515 6 3 141.5 -187.0 Φ141x115mm Datasheet
BII-7516 4 3 139.0 -185.0 Φ168x115mm Datasheet
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