Ultrasonic flow transducer BBFM-Q78K

ultrasonic transit-timevolumerugged

Overview The BBFM-Q78K is a 78 kHz ultrasonic flow transducer designed for high-temperature flue-gas measurement in industrial environments. It is intended for continuous monitoring of boiler exhaust and emission ducts, supporting transit-time measurement of hot gases with rated operation from -40 to +150°C, a pressure limit up to 3 kgf (0.3 MPa) and IP68 protection.

Operating and electrical specifications

• 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
• Protection rating: IP68

Applications

• Flue-gas flow measurement
• Boiler exhaust monitoring
• Industrial emission ducts
• High-temperature gas transit-time measurement

Materials & protection

• Housing material: Titanium alloy
• Ingress protection: IP68 for submerged or dust-tight installations
• Designed for high-temperature gas lines with specified pressure/temperature limits