Benthowave Instrument Inc.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Echo Sounding Transducer

Echosounding TransducerEchosounding TransducerEchosounding TransducerEchosounding TransducerEchosounding TransducerEchosounding TransducerEchosounding TransducerEchosounding Transducer

BII-7560 Echo Sounding Transducer

BII-7560 series are broadband conical beam echosounding transducers which are optimized for use in short and long echo-ranging survey system, and in high resolution assessment of target and scattering strength (TS & Sv) in scientific survey of rivers, lakes and sea. Short pulse width and Chirp/FM signals are supported.

Customized array with reduced beam width can be achieved with multiple BII-7560s: For example, a 0.336m x 0.336m square array can be set up with four BII-7566/22 to achieve 9.2º beam width and higher TVR of 165.0dB μPa/V@1m (or 220dB μPa@1m with 600Vrms driving voltage).

If main-beam sharpness and the side-lobe suppression need to be tuned, please refer to BII-7740 Amplitude Shading Transducer.

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.

Bandwidth = fr/Q.  Q: Quality Factor of the Transducer.
One-way Configuration:
Transmission or Reception.
Two-way Configuration:
Transmission and Reception. Transmit & Receive switching BII-2100 and BII-8070 are available from BII.

Suggested Application  
Fishery and Plankton Sonar
Navigation, Inspection and Survey
Bathymetric Sounder, Depth Sounder
Underwater Distance Gage, Altimeter
Parametric Transducers, FM/Chirp Transducer
Characterization and Testing of Materials
Target/Scattering Strength Measurement/Assessment (TS & Sv)
Object Detection and Tracking, Obstacle Avoidance
High Speed/Frequency Short Range Communication
Echo-counting/Echo-integration/Abundance Estimate
Seafloor Properties: Scattering/Roughness/Penetration/Reflection...
Water Sonication Treatment/Algae Bloom Control
High Power
Low Q and Broadband (FM/Chirp Sonar)
Conical Beam Width
Wide Frequency Range
Dual frequency: Deep & Shallow Echo Ranging
Easy Mounting on portable-mounting apparatus
Related Products
BII-5000 Wideband Power Amplifier
BII-6000 Impedance Matching and Tuning Unit
BII-2100 Transmitting & Receiving Switching
BII-7730 High Power Broadband Transducer: 10 to 200 kHz
BII-8080 Transmitting and Receiving System
Sonar Signal Generation


Note: TVR unit: dB μPa/V@1m; OCV unit: dB V/μPa; Maximum Input Power applies to 1% duty cycle.
Transducer Frequency
-3dB Beam Width
Q TVR OCV Solid Angle, dB
Two-way, 10logΨ
Input Power
Size: mm
BII-7562/38 38 37.0° 3 146.5 -196.0 -6.3 600W 60x70
BII-7562/50 50 28.0° 3 148.0 -196.0 -8.7 600W 60x62
BII-7562/70 70 20.0° 3 151.0 -196.0 -11.6 600W 60x50
BII-7562/120 120 11.5° 3 156.0 -196.0 -16.3 600W 60x40
BII-7562/200 200 7.0° 3 160.0 -196.0 -20.7 600W 60x35
BII-7562/300 300 4.0° 5 172.0 -196.0 -22.4 450W 60x30
BII-7562/420 420 3.0° 5 182.0 -198.0 -25.3 450W 60x25
BII-7563/38 38 22.6° 3 156.0 -195.0 -8.1 5000W 89x70
BII-7563/50 50 17.0° 3 158.0 -195.0 -10.5 3500W 89x62
BII-7563/70 70 12.0° 3 161.0 -195.0 -13.4 2000W 89x50
BII-7563/120 120 7.0° 3 166.0 -195.0 -18.1 600W 89x40
BII-7563/200 200 4.3° 3 170.0 -195.0 -22.5 300W 89x35
BII-7564/70 70 8.6° 3 162.0 -194.0 -15.8 1000W 114x50
BII-7564/120 120 5.0° 3 166.0 -195.0 -20.5 400W 114x40
BII-7566/22 22 18.3° 3 151.0 -179.0 -9.3 4000W 168x70
BII-7566/25 25 16.5° 3 152.3 -180.0 -10.4 4000W 168x70
BII-7566/38 38 10.6° 3 155.5 -183.0 -14.0 2000W 168x70
BII-7566/50 50 8.0° 3 160.0 -187.0 -16.5 1000W 168x62
BII-7566/70 70 5.6° 3 165.5 -194.0 -20.0 600W 168x50
BII-7566/120 120 3.5° 3 171.0 -195.0 -24.6 250W 168x40
Note: More transducers for use in echosounding: BII-7500 High Power Broadband Piston Transducer
Beam Pattern: Conical
Side Lobes: <-35.4
Maximum Operating Depth: 100m
Maximum Driving Voltage: 600Vrms
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.
Impedance Matching: BII-6000: 4 to 16Ω, 50Ω, 60Ω, 75Ω, 100Ω,...; Not Included. Order Separately, Append IM to part number for integrating a Impedance Matching Network in the transducer.
T/R Switch: BII-2100 Transmitting & Receiving Switching; Not Included. Order Separately, TR to part number for integrating a T/R Switch in the transducer.
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)
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): ONLY for Thru-hole Mount with BII-756xTR and BII-756xTRIM.
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.

Go back to Underwater SONAR Transducer.