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Nederlands Abstract
Soil moisture, temperature, and conductivity are critical parameters in precision agriculture, environmental research, and land resource management. Accurate, real-time monitoring across multiple soil layers enhances crop productivity, irrigation efficiency, and soil health assessment. This paper introduces and compares two advanced multilayer soil Moisture sensors developed by EcoSentec: the ES-S2255 and the ES-S2254 . Each model is designed for robust performance in diverse agricultural and environmental applications, offering distinct structural and functional advantages.
1. Introduction
With the advancement of smart agriculture and environmental monitoring, the need for accurate, multi-depth soil data is increasing. Traditional single-point sensors cannot fully capture vertical changes in soil parameters, necessitating the use of multilayer sensing technologies. EcoSentec has developed two sensor models—the ES-S2255 and ES-S2254—to meet this demand. This paper compares their structural designs, measurement capabilities, communication interfaces, durability, and application scenarios.
2. ES-S2255 Multi-Layer Soil Sensor
2.1 Functionality and Features
The ES-S2255 is a compact, stainless steel-encased soil sensor designed for dynamic, multi-layer monitoring. It measures three key soil parameters:
- Moisture Content
- Temperature
- Conductivity
It supports three to five detection layers, providing comprehensive vertical profiling of soil conditions. Key features include:
- Standard Modbus-RTU (RS485) communication with a maximum distance of 2000 meters
- Support for secondary development, facilitating integration into larger monitoring systems
- Completely sealed stainless steel housing with black flame-retardant epoxy resin, ensuring high corrosion resistance and long-term in-soil deployment
2.2 Application Scenarios
The ES-S2255 is suitable for applications requiring compact installation and high environmental resistance, such as:
- Scientific research stations
- Precision agriculture systems
- Long-term buried installations in harsh environments
3. ES-S2254 Tubular Soil Moisture Detector
3.1 Functionality and Features
The ES-S2254 adopts a modular, tubular layered design that allows for customized sensor heights. By default, it offers a temperature and humidity measurement point every 10 cm, adaptable to project-specific depth profiles. Optional features include:
- Tilt angle
- Acceleration
- Soil conductivity
It uses a high-strength PVC industrial plastic pipe, with internal epoxy resin potting, ensuring stability in environments with high salt ion concentrations and resistance to chemical interference from fertilizers and pesticides.
3.2 Application Scenarios
Designed for real-time, online soil monitoring, the ES-S2254 is ideal for:
- Agricultural irrigation systems
- Soil stratification research
- Longitudinal soil behavior studies
- Large-area sensor arrays for environmental monitoring
4. Comparison Table
| Feature | ES-S2255 | ES-S2254 |
|---|---|---|
| Measurement Layers | 3–5 layers | Customizable (default every 10 cm) |
| Measured Parameters | Moisture, Temperature, Conductivity | Temperature, Moisture (optional: Conductivity, Tilt, Acceleration) |
| Material | Stainless steel + epoxy resin | PVC pipe + epoxy resin potting |
| Corrosion Resistance | High (acid and alkali) | High (resistant to salt ions, fertilizers, pesticides) |
| Communication | Modbus-RTU RS485 | Modbus-RTU RS485 |
| Communication Distance | Up to 2000 meters | Up to 2000 meters |
| Installation | Compact, vertical profile | Modular tubular structure |
| Application Focus | Research, compact monitoring setups | Agricultural and customizable depth studies |
5. Conclusion
Both the ES-S2255 and ES-S2254 offer reliable multilayer soil monitoring solutions, with differences in structural design and customization flexibility. The ES-S2255 is well-suited for compact, rugged installations with fixed monitoring needs, while the ES-S2254 provides greater customization and optional integrated sensors, ideal for agricultural and research applications where flexibility and extensibility are required. EcoSentec’s range of soil monitoring products continues to support smarter, more efficient land and resource management practices.
