Benthowave Instrument Inc.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Low Noise Broadband Hydrophone

Low Cost Hydrophone for Underwater Sound RecordingLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband HydrophoneLow Noise Broadband Hydrophone

BII-7010 Low Noise Broadband Hydrophone

BII-7010 hydrophones provide low cost solutions for underwater recording, listening and laboratory acoustics from 1Hz to 400kHz. These hydrophones come with coax/shielded cables and underwater mateable/BNC/TRS/XRL/MIL-5015 style connectors, and are ready to be integrated into underwater acoustic systems.

BII-7010 Hydrophones with integrated low power preamplifiers and filters are ideal gears to amplify the weak signals underwater and reject ambient noises. Its compact and small size avoid interferences to acoustic field under test. The preamplifier integrated in the hydrophone can drive cable up to 1000m without signal loss over the cable. These features make BII-7010 hydrophones be ready for use in dipole, broadside array, end-fire array, line/planar/volumetric arrays.

These hydrophones support digital recorders, DAQs (A/D Converter), headphones (must order add-on headphone driver) and submersibles. Its optional built-in headphone driver help you enjoy the natural and marine animal sounds in audio frequency band while the sounds is being recorded.

Suggested Application  

General Purpose Low Noise Hydrophone
LBL/SBL/USBL Positioning
Underwater Sound Recording and Listening, Noise Monitoring
Air-sea Interaction Sounds, Ocean Surface Noise
Ambient Noise, Geologic Sounds, Biological Sounds
Vessel/Ship/Boat Traffic Noise
Noise from Oil, Gas & Construction Industry Activities
Field Studies of Marine Animals, Bioacoustic Research
Marine Animal Voices/Calls/Whistles/Songs/Clicks
Detection of Explosive Sound Sources & Air Guns Sounds

Tracking of Acoustic Tags
Reference Hydrophone for Transducer Calibration
Sonobuoy, Dipping Sonar, Towed Sonar
Natural/Anthropogenic/Bioacoustic Underwater Sounds
Line Powering or Plug-in-Powering Underwater Recording
Phantom Powering Underwater Recording
Detection of Ultrasonic Cavitation Noise
Dipole/Line/Planar/Conformal/Volumetric Arrays
Broadside Array and End-Fire Array
Passive SONAR, Passive Acoustic Monitoring (PAM System)

Frequency Range: 0.1Hz to 400kHz, Low Noise, Up to 950m depth Single-ended/unbalanced Output or Differential/Balanced Output
Underwater Mateable Connector/BNC/TRS/XRL, Driving Headphones Built-in Low power, low noise preamplifier with custom filters
Long cable driving capability: Up to 1000m Customized sensitivity in 60dB range
Very low interference to acoustic field under test Small and compact size for detection of broadband acoustic signals
Related Products  
BII-1000 Hydrophone Preamplifier BII-8000 Recording, Analysis & Playback
BII-5200 Headphone Power Amplifier BII-8006 Portable Digital Recorder


BII-7010 Series Hydrophone without Preamplifier
Signal Loss over Extension Cable (dB) = 20*log[Ch/(Ch+Cc)]; Ch: Hydrophone Capacitance; Cc: Capacitance of Extension Cable. Cable is of 100pF/meter roughly. Valid for hydrophone without preamplifier.
Hydrophone OCV, TVR, Directivity Usable
BII-7011 OCV, TVR, Directivity 1Hz to 60kHz 13.5 SE 104.2 300m Φ27x52 108g
BII-7011DF OCV, Directivity 1Hz to 60kHz 2.6 DF 104.2 300m Φ27x52 108g
BII-7011DW OCV, Directivity 1Hz to 60kHz 10.1 SE 104.2 950m Φ27x52 108g
BII-7012 OCV, TVR, Directivity 1Hz to 140kHz 11.2 SE 107.4 300m Φ21.3x40 112g
BII-7012DF OCV, Directivity 1Hz to 140kHz 2.8 DF 107.4 300m Φ21.3x40 112g
BII-7012DW OCV, Directivity 1Hz to 140kHz 10.6 SE 107.4 950m Φ21.3x40 112g
BII-7013 OCV, TVR, Directivity 1Hz to 200kHz 6.6 SE 109.6 300m Φ15.6x40 68g
BII-7013DF OCV, Directivity 1Hz to 200kHz 1.7 DF 109.6 300m Φ15.6x40 68g
BII-7013DW OCV, Directivity 1Hz to 200kHz 5.2 SE 109.6 950m Φ15.6x40 68g
BII-7014 OCV, Directivity 1Hz to 60kHz 48.0 SE 104.0 300m Φ27x52 108g
BII-7015 OCV, Directivity 1Hz to 300kHz 2.5 SE 101.0 300m Φ10x31 65g
BII-7015DW OCV, Directivity 1Hz to 300kHz 2.5 SE 101.0 950m Φ10x31 65g
Note: BII-7011, BII-7012 and BII-7013 can be used as low power projectors. Maximum driving voltage < 50 Vrms.
Others can NOT be used as projectors.
Output Type: Single Ended Output (SE); Differential Output (DF).
Cable Length: 1. 6m (default)
2. Custom:≤100m
Cable Options: 1. Default: Coax (ΦD=2.8mm) (Coax)
2. Shielded cable with two conductors (ΦD=3.6mm) (SC36)
3. Shielded cable with two conductors (ΦD=6.5mm) (SC65)
BII-7010 Series Hydrophone with Preamplifier
Note: Hydrophone Size with two ΦDxL: first ΦDxL is the size of sensing element, second ΦDxL is the size of preamplifier housing.
Hydrophone OCV&Directivity Usable
Noise Density
RTI @ 1kHz
BII-7016 OCV, Directivity 1Hz to 60kHz Click Here OCV, Directivity 104 300m 27x56 100
BII-7016DW OCV, Directivity 1Hz to 60kHz Click Here OCV, Directivity 104 950m 27x56 105
BII-7017 OCV, Directivity 1Hz to 140kHz Click Here OCV, Directivity 107 300m 21.3x51 98
BII-7017DW OCV, Directivity 1Hz to 140kHz Click Here OCV, Directivity 107 950m 21.3x51 102
BII-7018 OCV 1Hz to 250kHz 42 Omnix210°@200kHz 110 300m 9x20
BII-7019 OCV 3Hz to 400kHz 50 Omnix200°@250kHz 105 300m 9x20
Preamplifier Gain: Options: 0/26/40/60dB, preamplifier dependent. Specify when ordering.
Built-in Preamplifier: BII-1000 Series Hydrophone Preamplifier.
1. Default: BII-1060 series preamplifier. 2. Customized: Specify when ordering.
Overload Pressure Level: 20*log(Maximum Output/2.828) - Sensitivity, (dB μPa).
Filter: Customized high pass filter. Specify -3dB cut-off frequency when ordering.
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.
Maximum Output: Maximum Output of the built-in preamplifier, Vpp.
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 +30VDC, preamplifier dependent.
Current (Quiescent): Preamplifier dependent. Refer to BII-1000 Series Hydrophone Preamplifier.
Cable Length: 1. Default: 10m
2. Custom: up to 1000m
Cable: 1. Shielded Cable (ΦD=6.5mm) (SC)
2. Wire/Cable Bundle (WCB): for use with Thru-hole Mounting ONLY.
Miscellaneous: BII-7010 Series Hydrophone
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 (Plastics): (BFMP)
6. Bolt Fastening Mounting (Stainless Steel): (BFMSS)
7. Thru-hole Mounting + Free Hanging (THFH)
Transducer and Hydrophone Mounting for more detailed information on mounting/installation.
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)
Optional Add-on: Note: Standard BII-7010 has no headphone driver in default. Please specify options when ordering:
1. Default: Standard BII-7010
2. Headphone Driver BII-5200:
      Driving 16 to 100 Ω Headphone
      Support Headphone with 1/8" TRS plug or 3.5mm TRS plug
      200 mWrms, 30 kHz Bandwidth
      Gain Switch: 0 dB, -20 dB
3. Headphone:
      32 Ω, 91 dB/mW, 3.5mm TRS plug, 20 Hz to 20 kHz
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

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