Long-range underwater measurement with a defined beam
The BBDM-D46K is an underwater ultrasonic transducer for ranging and depth measurement. At a center frequency of 46 kHz, its recommended range extends from 1 to 1000 m. The half-power beam angle is 19.6° ±10% at -3 dB.
Technical specifications
| Parameter | Specification |
|---|---|
| Model | BBDM-D46K |
| Center frequency | 46 kHz ±5% |
| Recommended range | 1 to 1000 m |
| Half-power beam angle at -3 dB | 19.6° ±10% |
| Minimum impedance | 300 Ω ±20% |
| Capacitance | 4,500 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <1500 Vpp |
| Operating temperature | -40 to +80°C |
| Pressure rating | ≤10 kgf or 1 MPa |
| Housing material | PI and hard-anodized aluminum alloy |
| Protection rating | IP68 |
Applications
- Underwater ranging and depth measurement
- Underwater robot obstacle avoidance
- Tank and water-body distance measurement
- Underwater target detection
Selection and integration
Selection should account for the operating medium and temperature, required acoustic path, target size and surface condition, available installation space, operating pressure, ingress protection, and the drive and receive electronics.