Immersible ultrasonic transducer BBDM-D25K

for obstacle detectionmeasurementfor level measurement

Product overview
The BBDM-D25K is a 25 kHz underwater ultrasonic transducer designed for accurate distance and depth measurement in marine and inland water applications. Typical uses include ROV/AUV obstacle avoidance, tank and basin measurements, and underwater target detection for inspection and survey systems.

Electrical specifications
Parameter — Specification
Model: BBDM-D25K
Minimum impedance: 10,000 Ω ±20%
Capacitance: 1,300 pF ±20% at 1 kHz
Operating voltage: Peak voltage <450 Vpp
Housing material: 304 stainless steel
Protection rating: IP68

Available acoustic configurations
Center frequency — Recommended range — Acoustic field — Operating temperature — Pressure rating
25 kHz ±1 kHz — 200 m — 180° beam — -40 to +80°C — ≤10 kgf / 1 MPa
25 kHz ±5% — 500 m — Horizontally omnidirectional — -10 to +40°C — ≤3 kgf / 0.3 MPa

Applications

• Underwater ranging and depth measurement for ROV/AUV and vessels
• Obstacle avoidance for underwater robots and inspection platforms
• Distance measurement in tanks, basins and confined water bodies
• Underwater target detection for surveys and monitoring

System selection
Choose the configuration based on required range and acoustic field, taking into account operating temperature and pressure. Evaluate the operating medium, target size and surface, installation constraints, ingress protection and compatible drive/receive electronics to ensure reliable integration.

Technical specifications

• Model: BBDM-D25K
• Center frequency: 25 kHz (options ±1 kHz or ±5%)
• Recommended ranges: 200 m (±1 kHz configuration), 500 m (±5% configuration)
• Acoustic field: 180° (200 m config), Horizontally omnidirectional (500 m config)
• Operating temperature: -40 to +80°C (200 m config), -10 to +40°C (500 m config)
• Pressure rating: ≤10 kgf / 1 MPa (200 m config), ≤3 kgf / 0.3 MPa (500 m config)
• Minimum impedance: 10,000 Ω ±20%
• Capacitance: 1,300 pF ±20% at 1 kHz
• Operating voltage: Peak voltage <450 Vpp
• Housing material: 304 stainless steel
• Protection rating: IP68