Compact 78 kHz sensing for flue-gas flow paths
The BBFM-Q78K is a 78 kHz ultrasonic flow transducer for high-temperature flue-gas service. Applications include flue-gas flow measurement, boiler exhaust monitoring, industrial emission ducts and high-temperature gas transit-time measurement.
Its specified operating temperature is -40 to +150°C. The pressure limit is 3 kgf or 0.3 MPa, and IP68 protection is specified.
Operating and electrical specifications
| Parameter | Specification |
|---|---|
| Model | BBFM-Q78K |
| Center frequency | 78 kHz ±5% |
| Minimum impedance | 350 Ω ±20% |
| Capacitance | 1,800 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <900 Vpp |
| Operating temperature | -40 to +150°C |
| Pressure rating | ≤3 kgf or 0.3 MPa |
| Housing material | Titanium alloy |
| Protection rating | IP68 |
Applications
- Flue-gas flow measurement
- Boiler exhaust monitoring
- Industrial emission ducts
- High-temperature gas transit-time measurement