Product Overview
BBFM-Q1M is a 1 MHz ultrasonic transducer for ultrasonic liquid flow meters, thermal energy meters, and liquid metering modules. It is integrated into the measurement channel as an acoustic transmitting and receiving element, enabling liquid-flow measurement through ultrasonic signal propagation.
Three mechanical and acoustic configurations are available for different flow-channel structures, installation spaces, acoustic path lengths, and beam-angle requirements. All configurations feature a PPS housing, a maximum operating pressure of 1.6 MPa, and IP68 protection.
Key Features
- 0.98-1.0 MHz center operating frequency
- 10% or 25% frequency bandwidth
- 6° or 9° beam angle
- PPS housing
- Maximum operating pressure of 1.6 MPa
- IP68 protection
- Suitable for liquid-flow and thermal energy metering equipment
Available Parameter Configurations
| Parameter | 21 mm Wide-Band | 17 mm Standard | 12 mm Compact |
|---|---|---|---|
| Center operating frequency | 0.98 MHz ±2% | 1.0 MHz ±4% | 1.0 MHz ±5% |
| Frequency bandwidth | 25% | 10% | 10% |
| Combined transmitting and receiving sensitivity | ≥ -32 dB | >1.0 V | >80 mV |
| Beam angle (-3 dB full angle) | 6° | 9° | 9° |
| Capacitance | 1200 pF ±15% | 520 pF ±20% | 400 pF ±20% |
| Minimum parallel impedance | 150 Ω ±30% | 700 Ω ±30% | 500 Ω ±30% |
| Operating temperature | 4-95 °C | 0-50 °C | 0-95 °C |
| Maximum outer diameter | 21 mm | 17 mm | 12 mm |
| Axial housing length | 9.5 mm | 9 mm | 8.5 mm |
| Lead length | – | 200 mm | 40 mm |
Common Specifications
| Parameter | Value |
|---|---|
| Maximum operating voltage | <200 V, pulse, 2% duty cycle |
| Maximum operating pressure | 1.6 MPa |
| Housing material | PPS |
| Protection rating | IP68 |
| Parameter test temperature | 25 °C |
Wiring
For the 17 mm standard configuration, the red wire is positive and the white wire is negative.
Typical Applications
- Ultrasonic liquid flow meters
- Ultrasonic heat and cooling energy meters
- Liquid-flow measurement modules
- OEM liquid metering equipment