Sonar: Hydrophone, Underwater Transducer.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Broadband Hydrophone: Low Noise, Low Power, and Low Frequency

Low Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband Hydrophone

BII-7010 Series Broadband Hydrophone: Low Noise, Low Power, and Low Frequency

The directional response patterns are omnidirectional in low frequency range and toroidal in high frequency range. Typical quality factor Q are 2 in useful frequency range. Pulsed sounds reach stable state quickly and its ringing is short. Custom-fit hydrophones with low power preamplifiers consume 40μA to 0.6mA which is a great merit for battery-powered portable acoustic system.
These hydrophones provide low cost solutions for underwater recording, listening and laboratory acoustics from 0.2Hz to 500kHz. They come with coax/shielded cables and underwater mateable/BNC/TRS/XLR/MIL-5015 style connectors, and are ready to be integrated into underwater acoustic systems. They support digital recorders and DAQs (A/D Converter). the output signal can be used for speaker system and headphone.
Small size and broadband of bespoke BII-7015 offers benefit for uses in parabolic receivers underwater to achieve the highest pressure gain and the narrowest beam width which are the merits in weak signal detection and searching, directional high speed communication, etc...
BII-7010 Hydrophones with integrated low power preamplifiers and filters are ideal gears to amplify the weak signals underwater and reject ambient noises. Its compact and small size avoid interferences to acoustic field under test. The preamplifier integrated in the hydrophone can drive cable up to 1000m without signal loss. These features allows them to be used in long line arrays (streamers) and large planar arrays.
The hydrophone body has streamlined hemispherical domes which minimize the drag forces and the hydrodynamic noise caused by the hydrophone in motion or the flow past the hydrophone. they can measure the sound radiations and pressure changes in turbulent processes and flows.
BII-7016 hydrophones is specialized to measures low frequency underwater sounds and pressure fluctuations down to 0.1Hz infrasonic sounds: Surface Waves (Wave-height Sensor), Turbulences, seismic, ocean traffics, industrial noises, precipitations, biologics, ...

hydrodynamic noise

Typical Applications  
Towed/Dipping Hydrophone, Sonobuoy.
LBL, SBL, USBL Positioning.
Parabolic Antennas Underwater.
Reference Hydrophone, Noise Measurement.
Signal detection in strong currents.
Detection of Ultrasonic Cavitation Noise, Thermoacoustics in Gas.
Passive Acoustic Monitoring (PAM System).
Array Element, Vector Hydrophone Element.
Marine Bioacoustics, Phantom-power Hydrophone, Sound Recording.
Studies of Ocean Turbulence and Flow, Marine Hydrodynamics.
Related Products  
BII-7120 Low Noise Low Power Hydrophone Underwater Transducer: SONAR, NDT, and HIFU
BII-7030 Automatic Sensitivity Control Hydrophone: 80dB Range BII-7180 Miniature Hydrophone: Φ0.8 to Φ3.5mm Aperture

Specification

Low Noise Broadband Hydrophone without Preamplifier
Hydrophone FFVS (dBV/μPa) Usable Frequency Directivity Pattern Depth Rating No Preamp Built-in Preamp
BII7011 Series -194+Preamp Gain 0.2Hz to 70kHz Omnidirectional to Toroidal 100 to 950m Datasheet Datasheet
BII7012 Series -198+Preamp Gain 1Hz to 90kHz Omnidirectional to Toroidal 300 to 950m Datasheet Datasheet
BII7013 Series -200+Preamp Gain 1Hz to 160kHz Omnidirectional to Toroidal 500m Datasheet Datasheet
BII7014 Series -206+Preamp Gain 1Hz to 250kHz Omnidirectional to Toroidal 300m Datasheet Datasheet
BII7015 Series -210+Preamp Gain 1Hz to 500kHz Omnidirectional to Toroidal 300m Datasheet Datasheet
Preamplifier: Refer to Hydrophone Preamp Info.
Service Temperature: 1. Default: -10°C to to 60°C, or 14°F to 140°F.
2. Bespoke High Temperature Hydrophone: -10°C to 120°C, or 14°F to 248°F. Append HT to part number.
Information: Acoustic Components and System: Installation/Mounting, Ordering, Wiring, Array & Aperture Design and much more.

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