Ultrasonic transit-time flow transducer BBFM-Q130K

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Ultrasonic sensing for gas flow and velocity measurement
The BBFM-Q130K is a 130 kHz ultrasonic transducer designed for industrial gas flow meters and transit-time gas measurement modules. Documented reference range: 0.12 to 2 m. Intended for gas velocity and transit-time measurements in inline or insertion configurations.

Acoustic and electrical specifications
Center frequency: 130 kHz ±5%. Recommended reference range: 0.12 to 2 m. Minimum impedance: 650 Ω ±20%. Capacitance: 1,000 pF ±20% at 1 kHz. Peak operating voltage: <1,200 Vpp. Operating temperature: -40 to +80°C. Pressure rating: ≤3 kgf (0.3 MPa). Beamwidth: 13.5° ±10% (-3 dB). Interface dimensions: Ø16 × 19. Protection: IP68. Weight: 12 g ±5% (with 13 cm cable).

Acoustic and electrical characteristics
The documented acoustic characteristics include a reference range of 0.12 to 2 m and a half-power beamwidth of 13.5° ±10%. Drive and receive electronics should support a minimum impedance of 650 Ω ±20% and a capacitance near 1,000 pF ±20% at 1 kHz. The transducer is specified for peak voltages below 1,200 Vpp and a weight of approximately 12 g with the standard 13 cm cable.

Specifications / Technical specifications

• Model: BBFM-Q130K
• Center frequency: 130 kHz ±5%
• Recommended range (reference): 0.12 to 2 m
• Minimum impedance: 650 Ω ±20%
• Capacitance: 1,000 pF ±20% at 1 kHz
• Operating voltage: Peak voltage <1,200 Vpp
• Operating temperature: -40 to +80°C
• Pressure rating: ≤3 kgf (0.3 MPa)
• Beamwidth: 13.5° ±10% half-power angle at -3 dB
• Dimensions (interface): Ø16 × 19
• Protection rating: IP68
• Weight: 12 g ±5% (with 13 cm cable)