Four-megahertz transducer for liquid-level switching
The BBDM-4M-LS is a 4 MHz ultrasonic liquid level switch transducer. It is intended for high and low level alarms, liquid presence detection, pump protection and industrial equipment level control.
The specified operating temperature extends from -40 to +80°C. Pressure is rated up to 10 kgf or 1 MPa, and the protection rating is IP68.
Technical data for the sensing interface
| Parameter | Specification |
|---|---|
| Model | BBDM-4M-LS |
| Center frequency | 4 MHz ±5% |
| Minimum impedance | 85 Ω ±20% |
| Capacitance | 800 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <75 Vpp |
| Operating temperature | -40 to +80°C |
| Pressure rating | ≤10 kgf or 1 MPa |
| Protection rating | IP68 |
Liquid-state applications
- High and low level alarms in vessels
- Liquid presence or absence detection
- Pump protection
- Level control in industrial equipment