Wetted ultrasonic measurement for liquid-flow applications
The BBFM-Q25K is specified for industrial liquid flow meters, pipe velocity measurement, water-treatment flow monitoring and embedded flow measurement modules. It operates at a center frequency of 25 kHz ±5% and has a stated reference range of 500 m.
Its acoustic field is horizontally omnidirectional. This directional characteristic and the required acoustic path should be considered together when arranging the transducer in a measurement system.
Technical specifications
| Parameter | Specification |
|---|---|
| Model | BBFM-Q25K |
| Center frequency | 25 kHz ±5% |
| Recommended range | 500 m |
| Minimum impedance | 150 Ω ±20% |
| Capacitance | 16000 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <500 Vpp |
| Operating temperature | -10 to +40°C |
| Pressure rating | ≤3 kgf or 0.3 MPa |
| Acoustic field | Horizontally omnidirectional |
| Mounting | Refer to product dimensional drawing |
| Protection rating | IP68 |
| Weight | 390 g ±5% with 2 m cable |
Specified applications
- Industrial liquid flow meters
- Pipe velocity measurement
- Water-treatment flow monitoring
- Embedded flow measurement modules
Electrical and mechanical integration
The transmit and receive electronics should be matched to the stated minimum impedance of 150 Ω ±20% and capacitance of 16000 pF ±20% at 1 kHz. Peak voltage must remain below 500 Vpp.
Confirm the dimensional drawing against the available installation space. The operating conditions must remain within -10 to +40°C and no more than 3 kgf or 0.3 MPa, while preserving the specified IP68 protection.