Low-frequency reception for underwater noise work
The BBUA-H7K is a hydrophone and underwater noise receiver with a standard center-frequency specification of 7 kHz ±1 kHz. The standard version has a 300 m reference range.
Electrical and environmental data
The receiver has a minimum impedance of 18,000 Ω ±20% and a capacitance of 8,000 pF ±20% at 1 kHz. The peak-voltage limit is below 600 Vpp. It is rated for -40 to +80°C, a pressure limit of ≤10 kgf or 1 MPa, and IP68 protection.
Technical specifications
| Model | BBUA-H7K |
|---|---|
| Standard center frequency | 7 kHz ±1 kHz |
| Recommended range | 300 m |
| Minimum impedance | 18,000 Ω ±20% |
| Capacitance | 8,000 pF ±20% at 1 kHz |
| Peak-voltage limit | <600 Vpp |
| Operating temperature | -40 to +80°C |
| Pressure rating | ≤10 kgf or 1 MPa |
| Housing materials | Aluminum and POM |
| Protection rating | IP68 |
| Weight | 300 g ±5% with 1 m cable |
Available frequency tolerance
| Center-frequency configuration | Recommended range |
|---|---|
| 7 kHz ±1 kHz | 300 m |
| 7 kHz ±2 kHz | 300 m |
Applications
- Underwater noise monitoring
- Hydroacoustic listening
- Vessel and machinery noise testing
- Underwater acoustic experiments