News Details

KNF-315FDR 3-in-1 Soil Sensor Launched: Redefining Precision Agriculture with Advanced FDR Technology

We are proud to announce the official launch of the KNF-315FDR 3-in-1 Soil Sensor, a cutting-edge solution designed for comprehensive soil monitoring in precision agriculture, scientific research, and environmental management. Integrating high-precision measurement of Volumetric Water Content (VWC), Electrical Conductivity (EC), and Soil Temperature into a single rugged device, Support the SDI-12 protocol the KNF-315FDR sets a new benchmark for reliability and accuracy in the agricultural sensor market.

Advanced FDR Measurement Technology

At the core of the KNF-315FDR lies state-of-the-art Frequency Domain Reflectometry (FDR) technology. By precisely measuring the soil dielectric constant, the sensor provides an accurate and real-time reflection of actual soil moisture content across diverse soil types. This conforms to current international standards for VWC measurement, ensuring consistency and comparability in global research and agricultural applications.

Three Critical Parameters in One Device

The KNF-315FDR eliminates the need for multiple sensors by simultaneously monitoring three essential soil health indicators:

• Soil Moisture (VWC): Measurement range of 0–100%RH with precision of ±2% (0–50%, brown soil, 25℃) and ±3% (50–100%), featuring a high resolution of 0.1%. This enables precise irrigation scheduling and water resource optimization.
• Electrical Conductivity (EC): Wide range of 0–200ms/cm with ±3% F.S. accuracy (0–100ms/cm) and ±5% F.S. (100–200ms/cm), at a resolution of 0.01ms/cm. Essential for monitoring soil salinity and nutrient levels.
• Soil Temperature: Measurement range of 0℃ to +65℃ with ±0.5℃ precision (at 25℃) and 0.1℃ resolution, providing critical data for planting and fertilization timing.

Engineered for Harsh Environments

Designed for long-term field deployment, the KNF-315FDR features IP68-rated waterproof protection, allowing complete submersion in water without performance degradation. The probe electrodes are manufactured from specially treated anti-corrosion alloy, capable of withstanding strong impacts and resisting acid and alkali corrosion. The entire assembly is sealed with black flame-retardant epoxy resin, ensuring durability in the most demanding agricultural and industrial environments.

With an operating temperature range of -40℃ to +85℃, the sensor performs reliably in extreme climates—from frozen tundra to arid desert conditions—making it a truly global solution for soil monitoring.

Key Technical Specifications

Versatile Applications Across Industries

The KNF-315FDR is engineered for a broad spectrum of use cases:

• Precision Agriculture: Real-time soil condition monitoring for optimized irrigation and fertilization strategies, reducing water consumption by up to 30%.
• Saline Soil Research: Accurate EC measurement enables monitoring of soil salinization, supporting land reclamation and sustainable farming in saline-affected regions.
• Greenhouse & Horticulture: Maintain optimal growing conditions with continuous VWC, EC, and temperature feedback for flowers, vegetables, and high-value crops.
• Water-Saving Irrigation Systems: Integrate with automated irrigation controllers via RS485 Modbus or SDI-12 protocols for data-driven water management.
• Environmental Monitoring: Ideal for scientific experiments, pasture management, plant cultivation research, and wastewater treatment facilities.

Seamless Integration and Easy Deployment

The KNF-315FDR supports both RS485 (Modbus Protocol) and SDI-12 output signals, ensuring compatibility with a wide range of data loggers, PLC systems, and IoT platforms. Its plug-and-play design guarantees excellent interchangeability and fast response times, minimizing installation complexity.

For surface measurements, simply insert the sensor vertically into the soil at the desired depth. For long-term underground monitoring, dig a pit of 30cm+ diameter, insert the sensor horizontally into the pit wall at the target depth, and tightly backfill. The sensor can then deliver continuous data for days, months, or even years without maintenance.

Availability and Ordering Information

The KNF-315FDR 3-in-1 Soil Sensor is available now with a minimum order quantity of 1 piece and a supply capacity of 300+ pieces per month. Delivery is expected within 10–20 working days, with payment via T/T.

For inquiries, bulk orders, or customization requests (including cable length adjustments and output signal configuration), please contact our sales team today.