Ultrasonic sensing for gas flow and velocity measurement
The BBFM-Q130K is a 130 kHz ultrasonic transducer for industrial gas flow meters, gas meters and gas velocity measurement. It is also intended for transit-time gas measurement modules. The documented reference range is 0.12 to 2 m.
Its specified half-power angle is 13.5° ±10% at -3 dB. Operating conditions include -40 to +80°C, pressure up to 3 kgf or 0.3 MPa, and IP68 protection.
Acoustic and electrical specifications
| Parameter | Specification |
|---|---|
| Model | BBFM-Q130K |
| Center frequency | 130 kHz ±5% |
| Recommended range | 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 or 0.3 MPa |
| Beamwidth | 13.5° ±10% half-power angle at -3 dB |
| Dimensions | Ø16 × 19 |
| Protection rating | IP68 |
| Weight | 12 g ±5% with a 13 cm cable |
Acoustic and electrical characteristics
The documented acoustic characteristics are a 0.12 to 2 m reference range and a 13.5° ±10% half-power angle. The interface dimensions are Ø16 × 19.
Drive and receive electronics should accommodate a minimum impedance of 650 Ω ±20%, capacitance of 1,000 pF ±20% at 1 kHz and peak voltage below 1,200 Vpp. The specified 12 g ±5% weight applies to the configuration with a 13 cm cable.