75 kHz sensing for short measurement paths
The BBDM-75KR3M is an air ultrasonic distance transducer specified for a 0.3 to 3 m reference range. Its 75 kHz center frequency is paired with a 10.8° half-power beam angle at -3 dB, with an angular tolerance of ±10%.
The documented application set includes automation proximity detection, short-range positioning, counting and target detection, and compact level measurement. The transducer is rated IP68 and operates between -40 and +80 °C.
Electrical and mechanical specifications
| Parameter | Specification |
|---|---|
| Model | BBDM-75KR3M |
| Center frequency | 75 kHz ±5% |
| Recommended range | 0.3 to 3 m |
| Minimum impedance | 200 Ω ±20% |
| Capacitance | 1,000 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage below 1,500 Vpp |
| Operating temperature | -40 to +80 °C |
| Pressure rating | Up to 3 kgf or 0.3 MPa |
| Half-power beam angle at -3 dB | 10.8° ±10% |
| Top mounting thread | M30 × 1.5 |
| Protection rating | IP68 |
| Weight | 60 g ±5% |
| Cable length | 20 cm |
Application options
- Automation proximity detection
- Short-range positioning
- Counting and target detection
- Compact level measurement
Configuration information
For product selection, define the operating medium and temperature range, measuring distance or acoustic path, target size and surface condition, mounting space and interface dimensions, pressure and protection requirements. Drive and receive electronics, cable routing and the connection method should also be set for the equipment design.