Benthowave Instrument Inc.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Bandpass Hydrophone

Bandpass HydrophoneBandpass Hydrophone

BII-7200 Bandpass Hydrophone (6kHz to 2MHz)

BII-7200 hydrophones are band pass receivers which feature broadband and customization on beamwidth and operating frequency, and offer flexible, custom-made and low cost solutions to special transducer demanding in underwater acoustics. This makes BII-7200s be the best for use in noise rejection and communication where complex waveforms with higher harmonics must be transformed with low distortion.

Impedance of BII-7200s is resistance at resonant frequency, which makes possible the impedance matching between BII-7200 and the signal conditioning circuit. With impedance matching, the energy being reflected from the hydrophone/receiver face is minimized. The minimum of reflected energy is useful and critical in certain ultrasonic applications.

Optional mounting parts are available for installation on portable-mounting apparatus, submersibles, pipe, tank or vessel.

Suggested Application  
Tracking and Location of Sound Sources Underwater
Pinger/Locator/Transponder/Beacon/Acoustic Release/Acoustic Tags
LBL/SBL/USBL/Acoustic Positioning/Tracking
Marine Animal Voices/Calls/Whistles/Songs/Clicks
Analog and Digital Communication Underwater
Sound Velocity Profiler
Doppler Receiver
Ultrasonic Instrumentation
Frequency Available: 6kHz to 2MHz
Bandpass, Low Q/Broadband
Conical, Omnidirectional, Hemispherical and Fan-shaped Beam
Easy & Simple Installation
Resistive Impedance at Resonant Frequency
Customized on Beamwidth & Operating Frequency
Related Products  
BII-1000 Hydrophone Preamplifier BII-8000 Recording, Analysis & Playback


BII-7200 Hydrophone Piston TransducerPlane Sonar TransducerPiston Sonar TransducerHigh Power Piston TransducerFlange MountDoppler Transducer
Resonant Frequency fr: Available from 6kHz to 2MHz, Customized.
Depth Rating: 1. Default: 100 m (Blank)
2. Deep Water: 500m to 950m (DW)
Note: 500m to 950m depth rating is not available to some parameter combinations. BII shall contact you if depth rating you specified is not supported by your specified transducer.
Receiving Sensitivity: 1. No preamplifier: -170 to -205; dBV/µPa
2. Built-in Preamplifier: (-170 to -205) + Preamplifier Gain; dBV/µPa
Output Impedance at fr: 1. Included in test report for BII-7200 without preamplifier.
2. 0.1Ω to 50 Ω for BII-7200 with built-in preamplifier. preamplifier dependent.
Quality Factor Q: 2 typically. Note: -3dB bandwidth = fr/Q
Beam Pattern: Conical, Omnidirectional (Spherical), Hemispherical and Fan-shaped (Along-track & Cross-track).
-3dB Beam Width: Customized.
Side Lobe Level: ≤ -17.7 dB
Maximum Housing Diameter: ΦD ≤ 168 mm
Weight in Air: N/A

Preamplifier: 1. Default: no built-in preamplifier.
2. Customized, specify preamplifier when ordering. Impedance matching to sensing elements.
Output Type: 1. Default: Single Ended Output (SE), Append SE to the listed part number.
2. Differential Output (DF), Append DF to the listed part number. Exclusive to preamplified hydrophones.
Mounting Options: 1. Default: Free Hanging (FH)
2. Thru-hole Mounting with Single O-ring (THSO)
3. Thru-hole Mounting with Double O-ring (THDO)
4. Bolt Fastening Mounting (Stainless Steel): (BFMSS)
5. End-face Mounting:  (EFM)
6. Thru-hole Mounting + Free Hanging (THMFH)
7. Flange Mounting: (FGM)

Transducer and Hydrophone Mounting for more detailed information on mounting/installation.
Cable: 1. Shielded Cable (SC)
2. Wire/Cable Bundle (WCB): for use with Thru-hole Mounting ONLY.
Connector: 1. Default: Wire Leads (WL)
2. BNC Male (BNC)
3. 3.5 mm (⅛″) TRS Plug (TRS35)
4. ¼″ (6.35 mm) TRS Plug (TRS635)
5. XLR Plug (XLR)
6. Underwater Mateable Connector (UMC)
7. MIL-5015 Style (5015)
8. +9VDC Battery Snap (BS) (Exclusive to preamplified hydrophone)

9. Custom (custom)
Operating Temperature: -10°C to +60°C
Storage Temperature: -40°C to +60°C
How to Order: Click How to Order.
Hydrophone Wiring: Click Hydrophone Wiring for detailed wiring information.
Receiving Array: Array & Aperture Design
For Preamplified BII-7200  
Suggested DC Supply: +9VDC Battery, Marine Battery, Automobile Battery, Fixed DC Linear Power Supply, Not Included.
DO NOT use variable power supply whose maximum supply voltage is higher than the rated voltage.
DO NOT use switching mode DC power supply.
Supply Voltage: +4.5 to +24VDC
Current (Quiescent): 0.6/1.0/4.8mA

Normalized Voltage Sensitivity

Bandpass HydrophoneBandpass Hydrophone 

Bandpass HydrophoneBandpass Hydrophone

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