Ultrasonic flow transducer BBFM-Q180K

volumegasstainless steel

Product overview
The BBFM-Q180K is an ultrasonic gas flow transducer designed for industrial gas flow meters and transit-time gas measurement modules. It operates at a center frequency of 180 kHz ±5%, with a recommended reference range of 0.10 to 1.5 m and a half‑power beam angle of 6° ±10% (-3 dB). The transducer is housed in stainless steel and rated IP68 for use in demanding environments.

Technical specifications

• Model: BBFM-Q180K
• Center frequency: 180 kHz ±5%
• Recommended reference range: 0.10 to 1.5 m
• Minimum impedance: 1,000 Ω ±20%
• Capacitance: 700 pF ±20% at 1 kHz
• Operating voltage: Peak voltage <500 Vpp
• Operating temperature: -40 to +80°C
• Pressure rating: ≤16 kgf / 1.6 MPa
• Half-power beam angle: 6° ±10% at -3 dB
• Housing material: Stainless steel
• Protection rating: IP68
• Weight: 82 g ±5% (with 20 cm cable)

Target gas measurement systems

• Industrial gas flow meters
• Gas meters
• Gas velocity measurement
• Transit-time gas measurement modules

Electrical and environmental specifications
The transmit/receive interface must match the minimum impedance (1,000 Ω ±20%) and the capacitance (700 pF ±20% at 1 kHz). Applied peak voltage must remain below 500 Vpp. The device is specified for operation from -40 to +80°C and for pressures up to 16 kgf (1.6 MPa). IP68 protection ensures suitability for harsh or wet environments. The stated weight (82 g ±5%) corresponds to the version with a 20 cm cable.

Installation and handling notes

• Ensure acoustic alignment and mounting distance within the recommended range for accurate transit‑time measurement.
• Match cabling and input electronics to the impedance and capacitance specifications.
• Observe the maximum peak voltage and pressure limits during system integration.