Immersible ultrasonic transducer BBFM-V205K

high-frequencymeasurement

Overview
The BBFM-V205K is an ultrasonic transducer specified for 2D and 3D anemometers, meteorological monitoring, ventilation airflow measurement and industrial duct monitoring. Center frequency is 205 kHz ±5% with a half-power beam angle of 14.5° ±10% at -3 dB. Consider this acoustic geometry when defining transducer alignment and the sound path in wind measurement assemblies.

Technical specifications
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
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 mounting interface and alignment. The specified operating temperature is -40 to +80°C, and the finished assembly must retain the stated IP68 protection.

Technical features / specifications

• 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%