BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System
Directional Hydrophone
BII7070 Series Directional (Planar) Hydrophone (Acoustic Sensor) and Planar Array Element
BII's directional hydrophones have conical beams for uses in detection of weak signals,
broadband signals, pipeline leaks, and tracking of sound sources
underwater.
Low noise hydrophone (below sea-state zero) is available
for noise measurement. Service temperature can be customized to
200°C or 392°F. These acoustic sensors are also designed for applications in air to
detect acoustic emission and stress waves. (Note: couplant such as water
or gel is a necessary material to provide efficient acoustic
coupling between hydrophone face and the piece under test in air
applications.)
Below the critical frequency fc, the hydrophones are of single beam
without side lobes. This feature makes the hydrophone be an ideal
candidate as of linear and planar array elements for target
angle estimation systems or sound source tracking systems.
With
built-in
preamplifiers, the hydrophones have higher
sensitivity and can transmit signal over long cable.
| Typical Applications | |
| Direction-finding Sonar,
Tracking of Acoustic Tags. LBL/SBL/USBL Positioning System. Locating Marker/Pinger/Beacon/Transponder. Acoustic Pipeline Leak Detection. |
Array Elements for Array Focusing and Beam Steering. Noise Measurement, Bioacoustic Research of Marine Animals. Structural Health Monitoring, Acoustic Emission Detection/AE Sensor. Monitoring Aquarium/Pool Safety/Alarm System. |
| Related Products | |
| BII7120 Low Noise Low Power Hydrophone. | Underwater Transducer: SONAR, NDT, and HIFU. |
| BII7180 Miniature Probe Hydrophone. | BII7230 AE Sensor: Wideband Detection. |
Specification
| Directional (Planar) Hydrophone and Planar Array Element |
| No Preamp | With Preamp | Frequency | FFVS, dBV/µPa | Features |
| BII7071/2/3/4 | BII707xFGDF, BII707xPGDF | Up to 300kHz | -184.0 + Preamp Gain | 300m Depth, up to 200°C or 392°F |
| BII7075/6/7/8 | BII707xFGDF | Up to 450kHz | -188.0 + Preamp Gain | 300m Depth, up to 200°C or 392°F |
| N/A | BII7079FG/PG | Up to 100kHz | -184.0 + Preamp Gain | 300m Depth, Self-noise is below sea-state zero. 27 dB μPa/√Hz at 1kHz |