Five frequency configurations for underwater links and positioning
The BBUA-C series provides 35 kHz, 40 kHz, 55 kHz, 63 kHz and 80 kHz ultrasonic transducers for underwater communication links, positioning beacons, underwater robot communication and acoustic networks.
All configurations are rated for pressure up to 10 kgf or 1 MPa and carry IP68 protection. Electrical and environmental parameters differ by frequency and must be selected as one complete row.
Electrical and environmental configurations
| Center frequency | Minimum impedance | Capacitance | Operating temperature |
|---|---|---|---|
| 35 kHz ±5% | 500 Ω ±20% | 6,000 pF ±20% at 1 kHz | -40 to +80 °C |
| 40 kHz ±5% | 750 Ω ±20% | 3,800 pF ±20% at 1 kHz | -40 to +80 °C |
| 55 kHz ±5% | 40 Ω ±20% | 15,000 pF ±20% at 1 kHz | -10 to +40 °C |
| 63 kHz ±5% | 20 Ω ±20% | 24,000 pF ±20% at 1 kHz | -10 to +40 °C |
| 80 kHz ±5% | 30 Ω ±20% | 24,000 pF ±20% at 1 kHz | -10 to +40 °C |
Peak-voltage configurations
| Center frequency | Peak voltage |
|---|---|
| 35 kHz ±5% | Below 1,000 Vpp |
| 40 kHz ±5% | Below 450 Vpp |
| 55 kHz ±5% | Below 225 Vpp |
| 80 kHz ±5% | Below 260 Vpp |
Acoustic-field configurations
| Center frequency | Half-power angle at -3 dB |
|---|---|
| 35 kHz ±5% | 38.9° ±10% |
| 40 kHz ±5% | 72.6° ±10% |
| Center frequency | Acoustic field | Reference range |
|---|---|---|
| 55 kHz ±5% | Horizontally omnidirectional | 20 m |
| 63 kHz ±5% | Horizontally omnidirectional | 30 m |
| 80 kHz ±5% | Horizontally omnidirectional | 30 m |
Applications
- Underwater communication links
- Underwater positioning beacons
- Underwater robot communication
- Underwater acoustic networks