Ultrasonic switching for liquid level detection
The BBDM-2M-LS is a 2 MHz ultrasonic liquid level switch transducer for discrete liquid-level functions. It can be used for high and low level alarms, liquid presence or absence detection, pump protection and level control in industrial equipment.
Technical specifications
| Parameter | Specification |
|---|---|
| Model | BBDM-2M-LS |
| Center frequency | 2 MHz ±5% |
| Minimum impedance | 200 Ω ±20% |
| Capacitance | 2,500 pF ±20% at 1 kHz |
| Operating voltage | Peak voltage <300 Vpp |
| Operating temperature | -40 to +80°C |
| Pressure rating | ≤10 kgf or 1 MPa |
| Housing material | Aluminum |
| Protection rating | IP68 |
Applications
- High and low level alarms in vessels
- Liquid presence or absence detection
- Pump protection
- Liquid-level control in industrial equipment
Selection and electrical integration
Selection should account for the operating medium and temperature, the required measuring distance or acoustic path, target size and surface condition, available installation space, operating pressure, ingress protection, and the drive and receive electronics.
The associated electronics should be designed around the specified minimum impedance, capacitance and peak operating voltage.