70 kHz transit-time sensing for hot flue gas
The BBFM-Q70K is an ultrasonic flow transducer with a 70 kHz center frequency. Applications include flue-gas flow measurement, boiler exhaust monitoring, industrial emission ducts and high-temperature gas transit-time measurement.
The specified operating range is -40 to +150°C. Pressure must not exceed 3 kgf or 0.3 MPa, and the transducer has an IP68 protection rating.
Electrical and operating data
| Parameter | Specification |
|---|---|
| Model | BBFM-Q70K |
| Center frequency | 70 kHz ±5% |
| Minimum impedance | 700 Ω ±20% |
| Capacitance | 2,600 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <1,500 Vpp |
| Operating temperature | -40 to +150°C |
| Pressure rating | ≤3 kgf or 0.3 MPa |
| Housing material | 304 + LY12 |
| Protection rating | IP68 |
Applications
- Flue-gas flow measurement
- Boiler exhaust monitoring
- Industrial emission ducts
- High-temperature gas transit-time measurement