Product Overview
The BBDM-40K200KR200M-UW is a 40/200 kHz dual-frequency ultrasonic transducer for depth measurement in rivers, lakes and other bodies of water. The 40 kHz channel provides wider beam coverage and long-range acoustic propagation, while the 200 kHz channel provides a narrower, more focused measurement beam. Its specified depth capability exceeds 200 m.
Key Features
- 40 kHz and 200 kHz dual-frequency operation
- Specified depth capability exceeding 200 m
- Two beam angles for different measurement requirements
- Integrated temperature-sensor wiring
- G1″ threaded mounting
Technical Specifications
| Parameter | 40 kHz channel | 200 kHz channel |
|---|---|---|
| Center operating frequency | 40 ± 1 kHz | 200 ± 3 kHz |
| Beam width (-3 dB) | 15° | 5° |
| General parameter | Value |
|---|---|
| Piezoelectric material | PZT-4 |
| Parallel impedance in water | 600 Ω ±30% |
| Static capacitance | 2700 pF ±15% |
| Specified depth capability | >200 m |
| Mounting thread | G1″ |
| Outside diameter | Φ65 mm |
| Overall height | 86 mm |
Wiring
| Wire color | Function |
|---|---|
| Red | Transducer positive |
| Black | Transducer negative |
| Blue and green | Temperature sensor |
| Yellow, white and shield | External shielding connection |
Applications
- River and lake depth measurement
- Long-range underwater echo ranging
- Vessel-mounted and fixed depth-measurement systems
- Underwater instruments requiring dual-frequency beam coverage