Product Overview
BBULM-I is an ultrasonic level meter designed for external installation on the bottom of a tank. It measures the liquid level through the tank bottom without drilling or making openings in the container. Its compact design supports multiple measuring ranges, beam angles and industrial output options for level monitoring of water, diesel, gasoline, liquefied petroleum gas and other liquids.
An external LED display and programmer are available, together with optional wireless communication and low-power operation. Typical applications include tank monitoring, fuel level measurement, liquid inventory management, level alarms and remote monitoring.
Key Features
- External bottom mounting without drilling the tank
- Measuring range up to 3 m
- Minimum blind zone of 0.07 m
- Choice of 3° narrow beam or 8° standard beam
- RS485, RS232, TTL, 0-10 V and 4-20 mA outputs
- Optional magnetic mounting bracket for metal tanks
- Four-wire connection
- External LED display and programmer available
- IP67 protection
- Optional LoRaWAN, NB-IoT and Bluetooth communication
- Optional low-power battery operation
Measuring Range Options
| Measuring Range | Blind Zone | Beam Angle |
|---|---|---|
| 0.07-1 m | 0.07 m | 3° |
| 0.07-2 m | 0.07 m | 3° |
| 0.12-2 m | 0.12 m | 8° |
| 0.12-3 m | 0.12 m | 8° |
Liquid and Range Selection
| Liquid | 0.07-1 m | 0.07-2 m | 0.12-2 m | 0.12-3 m |
|---|---|---|---|---|
| Gasoline | ✓ | ✓ | ✓ | ✓ |
| Diesel | ✓ | – | ✓ | ✓ |
| Liquefied petroleum gas | ✓ | ✓ | ✓ | ✓ |
| Water | ✓ | ✓ | ✓ | ✓ |
| Multi-liquid configuration | ✓ | – | ✓ | ✓ |
| Other liquids | Custom | Custom | Custom | Custom |
Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement method | Externally bottom-mounted ultrasonic level measurement |
| Measuring range | 0.07-3 m, depending on configuration |
| Accuracy | 1% |
| Outputs | RS485, RS232, TTL, 0-10 V, 4-20 mA |
| Mounting | Bottom mounted |
| Power supply | 9-36 V |
| Ambient temperature | -40 to +80 °C |
| Process temperature | -20 to +60 °C |
| Ingress protection | IP67 |
| Housing material | PVDF / ABS |
| Dimensions | Ø39 × 32 mm |
| Weight | 40 g |
| Wiring | Four-wire connection |
| Display and setup | External LED display and programmer |
| Cable | Extension cable available |
| Compliance | CE, RoHS |
Optional Configurations
- LoRaWAN, NB-IoT or Bluetooth wireless output
- Low-power battery operation
- Magnetic mounting bracket for metal tanks
- External LED display and programmer
- Extension cable
- Adaptation for other liquid media
Typical Applications
- Water tank and storage tank level monitoring
- Diesel and vehicle fuel tank level measurement
- Gasoline and LPG tank level measurement
- Liquid inventory management
- High and low level alarms
- Telemetry and remote monitoring systems
- Irrigation control
- Batch process monitoring and control