Product Overview
BBULM-B measures liquid level through an ultrasonic sensor installed on the external bottom surface of a container. The sensor is coupled to the tank bottom without drilling or opening the vessel. It is suitable for water, diesel, petrol, LPG, and other liquids in stationary or moving containers.
The product consists of an ultrasonic sensor and a data processing box. It can be used with vehicle fuel tanks, transportation tanks, industrial vessels, and liquid-storage equipment, and can connect to local servers, cloud monitoring, or telemetry systems.
Key Features
- External bottom-mounted installation
- No drilling or penetration of the container
- Suitable for stationary and moving tanks
- Measuring range up to 5 m
- RS232 standard output
- Optional RS485, 4–20 mA, 0–10 V, and wireless communication
- High- and low-level alarms and remote monitoring
- IP68 sensor protection
Measuring Range Options
| Range Option | Measuring Range |
|---|---|
| 1 m range | 25 to 1,000 mm |
| 2 m range | 45 to 2,000 mm |
| 3 m range | 45 to 3,000 mm |
| 5 m range | 50 to 5,000 mm |
Technical Specifications
| Parameter | Specification |
|---|---|
| Measured liquids | Water, diesel, petrol, LPG, and other liquids |
| Tank-bottom thickness at measuring point | <10 mm |
| Accuracy | 1% |
| Power supply | 9 to 36 VDC |
| Maximum output load current | 10 mA |
| Maximum current consumption | 80 mA |
| Standard output | RS232 |
| Optional outputs | RS485, 4–20 mA, 0–10 V |
| Optional wireless communications | LoRaWAN, NB-IoT |
| Status indicators | Red: power; blue: signal |
| Sensor protection rating | IP68 |
| Transmitter protection rating | IP61 |
| Operating temperature | -40 to +80 °C |
| Storage temperature | -45 to +85 °C |
| Operating humidity | 5% to 95% |
| Galvanic isolation | Supported |
Standard Components
- Ultrasonic sensor with 1 m cable
- Interface and power cable, 1 m
- Data processing box
- Extension cable, 6 m
An LED programmer is available as an option. A suitable acoustic coupling material is required during installation to provide stable ultrasonic transmission through the container bottom.
Typical Applications
- Level measurement in vehicle fuel tanks and transportation tanks
- Diesel and fuel level monitoring
- Industrial tanks and liquid inventory management
- High- and low-level alarms
- Process batch monitoring
- Irrigation control and remote telemetry