205 kHz transducer for ultrasonic wind measurement
The BBFM-V205K is specified for 2D and 3D ultrasonic anemometers, meteorological monitoring, ventilation airflow measurement and industrial duct monitoring. Its center frequency is 205 kHz ±5%.
The half-power beam angle is 14.5° ±10% at -3 dB. This acoustic geometry should be considered when defining transducer alignment and the sound path in a wind speed and direction measurement assembly.
Technical specifications
| Parameter | Specification |
|---|---|
| Model | BBFM-V205K |
| Center frequency | 205 kHz ±5% |
| Minimum impedance | 800 Ω ±20% |
| Capacitance | 280 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <810 Vpp |
| Operating temperature | -40 to +80°C |
| Half-power beam angle | 14.5° ±10% at -3 dB |
| Housing material | Titanium alloy |
| Mounting | Refer to product dimensional drawing |
| Protection rating | IP68 |
| Weight | 33 g ±5% |
Specified monitoring uses
- 2D and 3D ultrasonic anemometers
- Meteorological monitoring
- Ventilation airflow measurement
- Industrial duct monitoring
Electrical and mechanical integration
The transmit and receive electronics should be matched to the minimum impedance of 800 Ω ±20% and capacitance of 280 pF ±20% at 1 kHz. Peak voltage must remain below 810 Vpp.
Use the dimensional drawing to verify the mounting interface and alignment. The specified operating temperature is -40 to +80°C, and the finished assembly must retain the stated IP68 protection.