Benthowave Instrument Inc.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Underwater Acoustic Transceiver/Artificial Acoustic Target

Underwater Acoustic TransceiverUnderwater Acoustic TransceiverUnderwater Acoustic Transceiver

BII-7640 Underwater Acoustic Transceiver/Artificial Acoustic Target

Benthowave manufactures underwater acoustic transceiver for uses in artificial acoustic target, navigation, communication, positioning, echosounding, bioacoustics and sensor network underwater, which integrates independent transmitting and receiving elements in one compact transducer to avoid the use of emission & reception switching in signal processing chain, improve the receiving bandwidth and sensitivity, and support customized -3dB beam width and beam pattern.

When used as an artificial target, BII-7640 is able to quantitatively simulate the noise, Doppler effect, echo or characteristic signals of the subjects such as ships, fish, marine animals, seabed, sub-bottom, etc...

Underwater Acoustic TransceiverArtificial Acoustic Target

Suggested Application  
Artificial Acoustic Target: Echo-Repeater Target, Active-Acoustic Target
Experimental Testing, Evaluation and Proofing of Sonar System
Underwater Communication and Modem, Acoustic Release
Underwater Acoustic Positioning: Transponder, Responder
Tracking of Acoustic Tags/Transmitters in Marine Fisheries and Animals
Underwater Vehicle Navigation, Forward-looking Sonar
Underwater Sensor Network
Underwater Telephone
Long Range Sound Transmission
Acoustic Deterrent to Marine Animals Marine
Animal Behavior Research, Bioacoustic Stimuli
Playback and Receive Marine Animal Sounds

Features Related Products

Transmit & Receive are independent, No Transmit & Receive Switching
Broadband or Low Q
Detection of Weak Signal/Response
Electrical Isolation & Shielding Between Emission and Reception

BII-8080 Transmitting and Receiving System
BII-5000 Power Amplifier
BII-6000 Impedance Matching and Tuning Unit
Sonar Signal Generation


Acoustic Transceiver Underwater Acoustic Transceiver
BII-7640 Series BII-7644 BII-7641 BII-7642 BII-7643
Operating Depth: 100m 200m 300m 300m
BII-7640 Series BII-7644DW BII-7641DW BII-7642DW BII-7643DW
Operating Depth: 950m 950m 950m 950m
Transmitting Elements:
Resonant Frequency: 8 kHz 15 kHz 30 kHz 40 kHz
Usable Frequency: 5 to 12 kHz 10 to 25 kHz 20 to 40 kHz 30 to 55 kHz
TVR @fr:
dB µPa/V@1m
137.0 144.0 142.2 136.6
Transmitting Face: Cylinder Cylinder Cylinder Cylinder
Transmitting Beams: Horizontal: Omni
±2dB@15 kHz
Horizontal: Omni
±2dB@20 kHz
Horizontal: Omni
±2dB@30 kHz
Horizontal: Omni
±2dB@50 kHz
Radiation Impedance@fr: 260 Ω 272 Ω 341 Ω 190 Ω
Maximum Drive Voltage: 300Vrms  300Vrms   300Vrms   300Vrms  
Receiving Elements:        
Sensitivity (dBV/µPa): -198.0+Preamplifier Gain -198.0+Preamplifier Gain -202.0+Preamplifier Gain -202.0+Preamplifier Gain
Preamplifier Gain Options: 0/26/40/60dB 0/26/40/60dB 0/26/40/60dB 0/26/40/60dB
Frequency Range: 1Hz to 60kHz 1Hz to 60kHz 1Hz to 140kHz 1Hz to 140kHz
Filter: Custom High Pass Custom High Pass Custom High Pass Custom High Pass
Receiving Directivity: Horizontal:
Omni @ 50 kHz
Omni @ 50 kHz
Omni @ 50 kHz
Omni @ 50 kHz
Maximum Output: 10.9Vpp@+12VDC 10.9Vpp@+12VDC 10.9Vpp@+12VDC 10.9Vpp@+12VDC
Supply Voltage: +4.5 to +24 VDC +4.5 to +24 VDC +4.5 to +24 VDC +4.5 to +24 VDC
Current (Quiescent): 0.6 mA 0.6 mA 0.6 mA 0.6 mA
Size: ΦD=110 mm
ΦD=90 mm

Transmitting Impedance Matching: Custom BII-6000: 4 to 16Ω, 50Ω, 60Ω, 100Ω...; Not included, order separately, Append IM to part number.
Temperature Sensor: 1. Default: No built-in temperature sensor.
2. Built-in NTC thermistor. When ordering, append TS to part number for integrating NTC thermistor in transducers.
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)
Transducer and Hydrophone Mounting for more detailed information on mounting/installation.
Cable: 1. Wire/Cable Bundle (WCB): ONLY for Thru-hole Mounting.
2. Shielded Cable (SC) for Free Hanging, Bolt Fastening and End-face Mounting.
Connector: 1. Default: Wire Leads (WL)
2. Underwater Mateable Connector (UMC)
3. MIL-5015 Style (5015)
4. Custom (Custom):   
    BNC male (BNC), 3.5 mm (⅛″) TRS Plug (3.5TRS), ¼″ (6.35 mm) TRS Plug (6.35TRS)
    XLR Plug (Unbalanced wiring) (XLR)
Operation Temperature: -10 to +60°C
Storage Temperature: -40 to +60°C
How to Order: Click How to Order.
Transducer Wiring: Click Transducer Wiring for detailed wiring information.
TVR/OCV: Click BII-7640 TVR/OCV for more information.

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