Short-range sensing at 70 kHz
The BBDM-70KR3M is an air ultrasonic distance transducer with a 70 kHz center frequency and a reference range of 0.3 to 3 m. Its half-power beam angle is 11.4° at -3 dB, with a tolerance of ±10%.
The model is intended for automation proximity detection, short-range positioning, counting and target detection, and compact level measurement. It operates from -40 to +80 °C and carries an IP68 protection rating.
Technical specifications
| Parameter | Specification |
|---|---|
| Model | BBDM-70KR3M |
| Center frequency | 70 kHz ±5% |
| Recommended range | 0.3 to 3 m |
| Minimum impedance | 300 Ω ±20% |
| Capacitance | 1,400 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 | 11.4° ±10% |
| Top mounting thread | M30 × 1.5 |
| Protection rating | IP68 |
| Weight | 70 g ±5% |
| Cable length | 20 cm |
Specified application areas
- Automation proximity detection
- Short-range positioning
- Counting and target detection
- Compact level measurement
Selection and installation inputs
Define the operating medium and temperature, required measuring distance or acoustic path, target size and surface condition, mounting space and interface dimensions, operating pressure, and protection requirements. The drive and receive electronics, cable and connection method should also be specified for the equipment.