1 MHz wetted sensing for liquid flow paths
The BBFM-Q1M-B is a wetted ultrasonic flow measurement transducer for industrial liquid flow meters, pipe velocity measurement and water-treatment flow monitoring. It can also be integrated into embedded flow measurement modules. The documented reference range is 0.05 to 3 m.
Its specified -3 dB half-power angle is 4.5° ±10%. The operating range is -40 to +80°C, the pressure rating is up to 10 kgf or 1 MPa, and the protection rating is IP68.
Acoustic, electrical and mechanical data
| Parameter | Specification |
|---|---|
| Model | BBFM-Q1M-B |
| Center frequency | 1 MHz ±5% |
| Recommended range | 0.05 to 3 m |
| Minimum impedance | 40 Ω ±20% |
| Capacitance | 1,500 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <300 Vpp |
| Operating temperature | -40 to +80°C |
| Pressure rating | ≤10 kgf or 1 MPa |
| Beamwidth | 4.5° ±10% half-power angle at -3 dB |
| Housing material | 304 stainless steel |
| Protection rating | IP68 |
| Weight | 150 g ±5% with a 1.5 m cable |
Acoustic and electrical characteristics
The documented acoustic characteristics are a 0.05 to 3 m reference range and a 4.5° ±10% half-power angle.
The electronics must accommodate a minimum impedance of 40 Ω ±20%, capacitance of 1,500 pF ±20% at 1 kHz and peak voltage below 300 Vpp. The specified 150 g ±5% weight applies to the version with a 1.5 m cable.