Ultrasonic measurement in high-temperature flue gas
The BBFM-Q34K is a 34 kHz ultrasonic flow transducer intended for flue-gas flow measurement, boiler exhaust monitoring and industrial emission ducts. Applications also include transit-time measurement in high-temperature gas.
The operating temperature range is -20 to +150°C. The transducer is rated for pressure up to 3 kgf or 0.3 MPa and carries an IP68 protection rating.
Technical specifications
| Parameter | Specification |
|---|---|
| Model | BBFM-Q34K |
| Center frequency | 34 kHz ±5% |
| Minimum impedance | 900 Ω ±20% |
| Capacitance | 5,000 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <1,500 Vpp |
| Operating temperature | -20 to +150°C |
| Pressure rating | ≤3 kgf or 0.3 MPa |
| Half-power beam angle | 11.5° ±10% at -3 dB |
| Housing material | Stainless steel |
| Protection rating | IP68 |
Specified measurement duties
- Flue-gas flow measurement
- Boiler exhaust monitoring
- Industrial emission ducts
- High-temperature gas transit-time measurement