
The DCL531 submersible level sensor is designed for water level monitoring in boreholes. Its 27mm diameter and stainless steel housing allow for use in narrow boreholes and harsh environments. Modbus RTU communication over RS485 enables easy integration with existing systems and multi-drop networking. Customizable cable lengths and process connections ensure compatibility with various borehole configurations.
- Slim design: The 27mm diameter profile allows for deployment in narrow boreholes.
- Durable construction: Stainless steel housing and IP68 rating ensure long-term reliability in harsh underwater environments.
- Modbus RTU compatibility: Enables seamless integration with existing SCADA systems and data loggers.
- RS485 interface: Ensures reliable communication over long distances and in noisy environments.
- Multi-drop capability: Allows multiple sensors to be connected on the same bus, reducing cabling costs.
- Customizable cable length: Suitable for boreholes of varying depths.
The DCL531 series is a highly versatile submersible level sensor specifically designed for accurate and reliable water level monitoring in boreholes. Its slim 27mm diameter profile allows it to be easily deployed in narrow boreholes, while its robust stainless steel construction and IP68 rating ensure long-term durability and performance in demanding underwater environments. This makes it ideal for applications such as groundwater monitoring, water resource management, and environmental research.
Borehole applications encompass a wide range of uses, including groundwater monitoring for water resource management, environmental monitoring of contaminant levels, and geotechnical investigations for construction projects. In these applications, the DCL531 submersible level sensor provides crucial data on water levels, which can be used to assess aquifer recharge rates, predict drought conditions, and monitor the impact of pumping or other activities on groundwater resources.
One of the key advantages of the DCL531 is its compatibility with Modbus RTU, a widely used industrial communication protocol. This allows the sensor to be seamlessly integrated into existing SCADA systems, data loggers, and other monitoring equipment, enabling real-time data acquisition and remote monitoring of water levels. The RS485 interface further enhances communication reliability and allows for extended cable lengths, making it suitable for deep boreholes or installations where the monitoring equipment is located a significant distance from the sensor.
The DCL531 utilizes a hydrostatic pressure measurement principle to determine water depth. The sensor’s internal pressure transducer accurately measures the pressure exerted by the water column above it, which is directly proportional to the water depth. This pressure reading is then converted into a digital signal and transmitted via the RS485 interface using the Modbus RTU protocol. The sensor’s high accuracy and stability ensure precise water level measurements over long periods, minimizing the need for frequent recalibration.
Furthermore, the DCL531 offers a range of customization options to meet specific application requirements. The cable length can be specified to suit the borehole depth, and various process connections are available to ensure compatibility with different borehole diameters and well casings. This flexibility makes the DCL531 a truly adaptable solution for diverse borehole water level monitoring applications.

DCL 531 Modbus RTU RS485 Submersible Level Sensor
- Part number: 451-5001-1-1-L5-1-3-2-055-000
- Pressure Range: 0 – 50mH2O
- Output: RS 485 Modbus RTU
- Accuracy: 0.35% FS IEC 60770
- Electrical Connection: PUR Cable
- Cable Length: 55 metres
- Process Connection: Self flushing nose cone (Flush diaphragm when removed)
- Housing Material: Stainless Steel 1.4571 (316L)
- Diaphragm Material: Stainless Steel 1.4435 (316L)
- Seal Material: FKM
- Approvals: None