Benthowave Instrument Inc.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Broadband Directional Multimode Transducer

Multimode TransducerMultimode TransducerMultimode Transducer

BII-7620    Broadband Directional Multimode Transducer

BII-7620 series transducers provide beam patterns of cardioid, omni, dipole and quadrupole, which is useful in directional sound production and detection.

Optional mounting parts are available for installation on portable-mounting apparatus, submersibles, pipe, tank or vessel.
An impedance matching transformer is optional to provide correct impedance match to load requirements of power amplifiers.
A Transmit & Receive Switch is available to be integrated inside transducer for amplifying the received sounds and driving long cable.

Suggested Application  Features  Related Products 

Underwater Communication/Telephone
Artificial Acoustic Target
Echo-Repeater, Active-Acoustic Target
Underwater Positioning
Pinger and Locator

Directional Cardioid Beam
Omni, Dipole, Quadrupole

BII-5000 Power Amplifier
BII-6000 Impedance Matching and Tuning Unit
BII-8030 Underwater Acoustic Transmitter
BII-8080 Transmitting & Receiving System
Sonar Signal Generation


Cardioid Beam BII-7621 BII-7622 BII-7626
Usable Frequency: 12 to 26 kHz 20 to 36 kHz Omni Mode: 8.0 kHz
Dipole Mode: 11.2 kHz
Quadrupole Mode: 20.4 kHz
TVR (µPa/V@1m): 142.6 dB  144 dB Omni Mode: 139 dB
Dipole: 130.5 dB
Qradrupole Mode: 133.5 dB
OCV/RVR (V/uPa): -182 dB -181 dB Omni Mode: -180dB
Dipole Mode: -189dB
Qradrupole Mode: -197.2 dB
Horizontal Beamwidth (-3dB): 220° 220° Omni
Dipole: 50°
Quadrupole: 30°
Horizontal Beams Pattern: Cardioid Cardioid Omni
Radiation Face: Cylinder Cylinder Cylinder
Maximum Drive Voltage: 300 Vrms 300 Vrms 300 Vrms
Impedance: 590 Ω @ 20 kHz 550 Ω @ 30 kHz 227 Ω @ 8 kHz
606 Ω @ 11.2 kHz
339 Ω @ 20.4 kHz
Capacitance: 14.0 nF 16.6 nF 18.0 nF each segment
Maximum Operation Depth: 100 m 100 m 50 m
Size (ΦDxH): 90x53 mm 60x51 mm 115x52 mm
Impedance Matching & Tuning: Custom BII-6000: 4 to 16Ω, 50Ω, 60Ω, 100Ω,...Order Separately, Append IM to part number.
TR Switch: BII-2100 Transmitting & Receiving Switch. Not Included. Order Separately, Append TR to part number.
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. Shielded Cable (SC)
2. Wire/Cable Bundle (WCB): ONLY for Thru-hole Mount with BII-762xTR and BII-762xTRIM.
Connector: 1. Default: Wire Leads (WL)
2. Underwater Mateable Connector (UMC)
3. MIL-5015 Style (5015)
4. Custom (custom)
Operating Temperature: -10°C to +60°C
Storage Temperature: -40°C to +60°C
How to Order: Click How to Order.
Transducer Wiring: Click Transducer Wiring for detailed wiring information.
Technical Document: Click TVR and Beam Pattern for detailed wiring information.

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