Immersible ultrasonic transducer BBDM-D35K

for level measurementmeasurementfor obstacle detection

Overview
The BBDM-D35K is a 35 kHz underwater ultrasonic transducer designed for ranging and depth measurement with a reference range of 500 m. It is intended for marine and subsea applications including ROV navigation, tank level monitoring and underwater target detection.

Acoustic coverage
The acoustic field is horizontally omnidirectional, providing consistent azimuthal coverage for single-axis deployment.

Technical characteristics
Center frequency: 35 kHz ±5%
Recommended range: 500 m
Acoustic field: Horizontally omnidirectional
Minimum impedance: 70 Ω ±20%
Capacitance: 26500 pF ±20% at 1 kHz
Operating voltage: Peak voltage <300 Vpp
Operating temperature: -10 to +40°C
Pressure rating: ≤3 kgf (0.3 MPa)
Protection rating: IP68

Applications

• Underwater ranging and depth measurement for vessels and subsea equipment
• Obstacle avoidance for remotely operated vehicles (ROV) and AUVs
• Distance and level measurement in ballast tanks and confined water bodies
• Underwater target detection and positioning support

Technical specifications

• Center frequency: 35 kHz ±5%
• Recommended range: 500 m
• Acoustic field: Horizontally omnidirectional
• Minimum impedance: 70 Ω ±20%
• Capacitance: 26500 pF ±20% at 1 kHz
• Operating voltage: Peak voltage <300 Vpp
• Operating temperature: -10 to +40°C
• Pressure rating: ≤3 kgf (0.3 MPa)
• Protection rating: IP68