The SmartScan2550 Ultrasonic Level Sensor is a high-performance, split-type 4-wire ultrasonic level transmitter designed for continuous, reliable level measurement in complex industrial conditions. Built to handle liquids, bulk solids, and open channel flow applications, this sensor combines exceptional accuracy, robust construction, and versatile communication options to meet the most demanding process control requirements. Whether deployed in corrosive chemical tanks, noisy wastewater environments, or hazardous industrial zones, the SmartScan2550 Ultrasonic Level Sensor delivers consistent, maintenance-free performance for years.

The SmartScan2550 Ultrasonic Level Sensor is engineered with a focus on reliability and adaptability. It offers a maximum liquid measurement range of 12 meters and 8.5 meters for solids, with a resolution of 1mm and an accuracy of ±0.25% of the measured range. The sensor operates reliably across a wide temperature range from -40°C to 90°C, making it suitable for both indoor and outdoor installations in extreme climates.
A standout feature of the SmartScan2550 Ultrasonic Level Sensor is its PVDF transducer, which provides excellent resistance to chemical corrosion. This makes it ideal for applications involving acids, alkalis, and other aggressive media that would damage standard sensors. The sensor also includes advanced signal processing algorithms, including false echo suppression, temperature compensation, and noise filtering, ensuring stable readings even in environments with heavy turbulence, foam, or background interference.
The SmartScan2550 Ultrasonic Level Sensor offers multiple output options to integrate seamlessly with existing industrial control systems. It supports 4-20mA analog output, Modbus RTU communication, and an optional custom LCD display for local configuration and monitoring. Additionally, the unit features 5 independent SPDT relays that can be configured for pump control, high/low level alarms, or process automation tasks.
The split design of the SmartScan2550 Ultrasonic Level Sensor allows the transducer and control unit to be installed up to 200 meters apart. This is particularly useful in applications where the sensor must be mounted in a hard-to-reach or hazardous location, while the control panel is kept in a safe, accessible area for operators.
The SmartScan2550 Ultrasonic Level Sensor is widely used across various industries for level monitoring and process control. In water and wastewater treatment plants, it measures levels in sedimentation tanks, clarifiers, and lift stations, providing accurate data for pump control and overflow prevention. In the chemical and petrochemical industry, its corrosion-resistant PVDF probe makes it suitable for monitoring acids, solvents, and other hazardous liquids in storage tanks.
For bulk solid applications, the SmartScan2550 Ultrasonic Level Sensor reliably measures levels in silos, hoppers, and inventory tanks. It is also commonly used in the food and beverage industry for non-contact measurement of liquids and powders, ensuring hygienic operation with no risk of product contamination. The sensor’s ability to calculate volume and flow rate further enhances its utility in open channel flow monitoring, supporting compliance with environmental regulations.


Installing the SmartScan2550 Ultrasonic Level Sensor is straightforward and requires minimal downtime. The sensor can be mounted vertically on the tank roof or wall, and the control unit can be configured via the LCD display or Modbus interface. The advanced self-calibration function eliminates the need for frequent manual adjustments, reducing maintenance requirements and operational costs.
| Item | Specification |
|---|---|
| Model | LIQUIDS, SOLIDS, OCF |
| Measuring range (max) | Liquids: 12 meter (39 feet), Solids: 8.5 meter (27 feet) |
| Dead zone | 0.4 meter (1.3 feet) |
| Power supply (DC) | 18 – 30 VDC (0.6W max) |
| Power supply (AC) | 100 – 240 VAC 50/60 Hz |
| Operating temperature | -40° to +90°C (-40° to +194°F) |
| Mounting option | 1″ BSP or NPT |
| Measurement accuracy | 0.2% of max range |
| Resolution | 1mm (0.4 inch) |
| Temperature compensation | Automatic |
| Max load | 750 Ohm @ 24 VDC |
| Housing type | Two part (sensor unit and control unit) |
| Housing material | ABS + UV |
| Sensor unit seal rating | IP67 |
| Control unit seal rating | IP65 |
| Sensor material | Polypropylene or PVDF |
| Acoustic window | Glass reinforced epoxy |
| Display | LCD 6 digits |
| Current output range | 4-20mA, 4-wire |
| Distance sensor-control | 200 meter (656 feet) max |
| Communication interfaces | RS232 or RS485 and optional ModBus |
| Trigger points | 10 |
| Relays | Five independent SPDT, set for level or distance |
| Weight | 1.6 Kg (3.5 lb) |
| Enclosure dimensions | 272mm x 200mm x 85mm (10.7″ x 7.9″ x 3.3″) |
| Certifications | Control unit: CE – EMC, CE-EMC Sensor: ATEX: EEx m IIC T4 |