Benthowave Instrument Inc.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Underwater Acoustic Transceiver/Artificial Acoustic Target

BII-7640 Underwater Acoustic Transceiver/Artificial Acoustic Target


Acoustic Transceiver BII-7644 BII-7641 BII-7642 BII-7643
Operating Depth: 300m 300m 300m 500m
Size (ΦDxH): Φ110 x 100mm Φ90 x 100mm Φ60 x 100mm Φ48 x 100mm
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
Transmitting Face: Cylinder Cylinder Cylinder Cylinder
Transmitting Beams:
(Horizontal x Vertical)
±2dB@8 kHz
±2dB@15 kHz
±2dB@30 kHz
±2dB@40 kHz
Radiation Impedance@fr: 260 Ω 272 Ω 341 Ω 190 Ω
Maximum Drive Voltage: 300Vrms  300Vrms   300Vrms   300Vrms 
Impedance Matching: Custom BII-6000: 4 to 16Ω, 50Ω, 60Ω, 100Ω...; Not included, order separately, Append IM to part number.
Note: BII-6000s working with BII-7644 and BII-7641 are standalone units ONLY.
BII-6000s working with BII-7642 and BII-7643 can be standalone units or embedded units inside transducer housing. specify when ordering.
Receiving Elements:  
Sensitivity (dBV/µPa): Refer to the respective TVROCV links above.
Preamplifier Gain: Options: 0/26/40/60dB. 1. Default: 40dB; 2. Customized Gain: Specify the gain when ordering.
Frequency Range: 1Hz to 140kHz
Customized Filter: Band Pass, Specify -3dB cut-off frequency when ordering.
Receiving Directivity: Horizontal x Vertical: Omni x 230° at 60kHz
Input Noise Density: Click Input Noise Density.
Maximum Output: Supply Voltage - 3 Vpp
Supply Voltage: +6 to +30 VDC
Current (Quiescent): 3.2 mA
Temperature Sensor: 1. Default: No built-in temperature sensor.
2. Built-in temperature sensor. When ordering, append TS to part number for integrating a temperature sensor in the transducer. Click Temperature Characteristics for more information.
Mounting Options: 1. Default: Free Hanging (FH)
2. Free-hanging with Male Underwater Connector (FHUWC)

3. Thru-hole Mounting with Single O-ring (THSO)
4. Thru-hole Mounting with Double O-ring (THDO)
5. Bolt Fastening Mounting (Stainless Steel): (BFMSS)
6. 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.
How to Order  BII-7640 Series Transducers
BII-764X xx xx -xx -xx /xx -xx -xx -xx -xx -xx
Transducer Blank
in kHz
Matching Impedance
in Ω
or BII Power Amplifier
Receiving Gain
in dB
High Pass Filter
in kHz
Mounting Cable Length
in meter
Cable Connector
Example of Part Number: Description
BII-7642/40-THSO-0.1-WCB-WL BII-7642 transducer, 40dB Preamplifier Gain, Thru-hole Mounting (Single O-ring), 0.1m Shielded Cable & Wires, Wire Leads.
BII-7642IM-30-50/40-5.0-FH-20-SC-WL BII-7642 transducer, Built-in Impedance Matching at 30kHz, 50Ω, 40dB Preamplifier Gain, 5kHz high Pass Filter, Free Hanging, 20m Shielded Cable, Wire Leads
BII-7642IM-30-BII-5061/40-5.0-FH-20-SC-WL BII-7642 transducer, Built-in Impedance Matching at 30kHz to BII-5061 Power Amplifier, 40dB Preamplifier Gain, 5kHz high Pass Filter, Free Hanging, 20m Shielded Cable, Wire Leads

Electrical Wiring

Signal Cable with Wire Leads Underwater Connector
Transmitting + Brown pin 5
Transmitting - Blue pin 6
Power Supply: +VDC Red Pin 3
Power Supply Common, System Grounding Black Pin 1
Receiving Signal White Pin 2
Receiving Common Green Pin 4
N/A N/A Pin 7 (No Connection)
N/A N/A Pin 8 (No Connection)
N/A N/A Pin 9 (No Connection)
System Grounding Shield Pin 10
Note: Power Supply Common and cable shield must be grounded firmly for safety.

Go back to Underwater SONAR Transducer.