Compact 200 kHz transducer for wind vector sensing
The BBFM-V200K-B is an ultrasonic wind speed and direction transducer for 2D and 3D ultrasonic anemometers, meteorological monitoring, ventilation airflow measurement and industrial duct monitoring. Its specified center frequency is 200 kHz ±5% and the reference range is 0.10 to 1.5 m.
The primary configuration uses an 8° ±10% half-power beam angle at -3 dB and a documented 16 × 11 dimensional format. Additional acoustic configurations are listed for different beam coverage and installation requirements.
Primary configuration specifications
| Parameter | Specification |
|---|---|
| Model | BBFM-V200K-B |
| Center frequency | 200 kHz ±5% |
| Recommended range | 0.10 to 1.5 m |
| Minimum impedance | (300–500) Ω ±20% |
| Capacitance | 730 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <750 Vpp |
| Operating temperature | -40 to +80°C |
| Pressure rating | ≤3 kgf or 0.3 MPa |
| Half-power beam angle | 8° ±10% at -3 dB |
| Mounting dimensions | 16 × 11 |
| Protection rating | IP68 |
| Weight | 6.5 g ±5% with a 22 cm cable |
Available beam configurations
| Center frequency | Half-power angle at -3 dB | Operating temperature |
|---|---|---|
| 200 kHz ±5% | 8° ±10% | -40 to +80°C |
| 200 kHz ±5% | 11.3° ±10% | -40 to +80°C |
| 200 kHz ±5% | 6.6° ±10% | -40 to +80°C |
| 200 kHz ±5% | 14.5° ±10% | -40 to +60°C |
The 14.5° configuration has a 14 × 11 dimensional format.