WET150 Soil moisture, temperature & EC sensor

The WET150 is a groundbreaking, digital SDI-12 sensor that delivers research-grade accuracy for measuring soil moisture, temperature, and electrical conductivity (EC) at an exceptional price-performance ratio. Its rugged, buriable IP68 design and ultra-low power consumption make it ideal for permanent deployment in agriculture, horticulture, and environmental science. The sensor features a detachable cable system with M12 connectors and provides critical data for precision irrigation, nutrient management, and system integration. Full Description:

Next-Generation Precision for Soil and Substrate Management

The WET150 represents over 40 years of sensor development expertise, packaged into a versatile and affordable tool for modern agriculture and research. It simultaneously measures three vital parameters: volumetric water content, pore water conductivity (ECp – the ion content available to plants), and temperature directly in the root zone. This data is crucial for making informed decisions about irrigation scheduling, fertiliser application, and understanding plant-soil interactions. The sensor's advanced microprocessor employs complex internal correction algorithms and patented electronics to ensure exceptional salinity and temperature stability, providing reliable data you can trust for critical control systems.

Designed for Seamless Integration and Long-Term Reliability

Built for system integrators, the WET150 utilizes the SDI-12 digital protocol, allowing dozens of sensors to be networked on a single data logger channel. This drastically reduces wiring complexity and cost for large-scale monitoring systems. The robust, cylindrical shape is easy to install with minimal soil disturbance, and its IP68 rating guarantees long-term performance even when permanently buried. Optional extension tubes and cables facilitate installation at various depths for detailed soil profile analysis, making it a complete solution for both research and commercial automation.

Key Advantages of the WET150 System

• Triple-Parameter Measurement: Accurately monitors soil moisture, temperature, and pore water conductivity (ECp) simultaneously from a single, compact probe.
• Digital SDI-12 Interface: Enables easy integration into automated systems, allows long cable runs without signal loss, and supports multiple sensors on one logger channel.
• Research-Grade Accuracy, Affordable Price: Offers the high performance Delta-T is known for at a breakthrough price point, making precision agriculture more accessible.
• Rugged & Buriable Design: IP68-rated construction and a detachable cable system allow for permanent installation and easy maintenance or replacement.
• Pre-Calibrated for Various Media: Comes complete with factory calibrations for mineral soils, organic soils, coir, peat, and mineral wool substrates.

Optimal Application and Use

For accurate readings, insert the sensor vertically into the soil or substrate, ensuring the entire length of the rods is in full contact with the medium. For permanent burial at depth, use an auger (like the SM-AUG-100) to create a pilot hole and optional extension tubes for placement and retrieval. Connect the sensor to an SDI-12 compatible data logger (e.g., Delta-T GP2) using the appropriate cable. Configure the SDI-12 address and ensure the logger provides a 6-20 VDC power supply on the data bus. The sensor will remain in a low-power idle state (<0.5 mA) until woken by a measurement command from the logger.