Immersible ultrasonic transducer BBDM-D1M

high-frequencyproximityfor obstacle detection

Short-range underwater measurement at 1 MHz
The BBDM-D1M is an underwater ultrasonic transducer designed for precise short-range ranging and depth measurement over a reference range of 0.10 to 3.0 m. It is intended for integration on ROVs/AUVs, inspection rigs and instrumentation used in tanks and confined water bodies.

Narrow acoustic beam
The transducer operates at a center frequency of 1 MHz ±5% with a half-power beam angle (‑3 dB) of 3.0° ±10%. For optimal results, align the beam with the target and assess the acoustic path, target size and surface condition prior to deployment.

Technical specifications

• Model: BBDM-D1M
• Center frequency: 1 MHz ±5%
• Recommended range: 0.10 to 3.0 m
• Half-power beam angle at -3 dB: 3.0° ±10%
• Minimum impedance: 15 Ω ±20%
• Capacitance: 2,500 pF ±20% at 1 kHz
• Operating voltage: Peak voltage <300 Vpp
• Operating temperature: -10 to +50°C
• Pressure rating: 5 MPa
• Housing material: 316 stainless steel and PI
• Protection rating: IP68

Applications

• Underwater ranging and depth measurement
• Underwater robot obstacle avoidance
• Tank and water-body distance measurement
• Underwater target detection