Are Rika’s soil sensors based on TDR or FDR technology?

Question

Accepted Answer

After years of R&D and field validation, Rika Sensor’s primary soil moisture monitoring series utilizes mature FDR (Frequency Domain Reflectometry) technology.

Core Principle of FDR: This environmental sensor monitors water content by measuring changes in the soil's dielectric constant. It emits high-frequency electromagnetic waves, where shifts in oscillation frequency—caused by varying moisture levels—are accurately converted into volumetric water content data.

Key Advantages over TDR Technology:

1.Ultra-Low Power Consumption: FDR sensors typically operate at microampere levels. This makes them ideal for integration with a weather station or wireless data acquisition nodes in remote, battery-powered IoT environments.

2.Superior Stability: The technology is less sensitive to soil salinity and texture, providing exceptional anti-interference capabilities. This ensures the weather sensors best suited for maintaining linear output and measurement precision over time.

3.Excellent Cost-Efficiency: Unlike TDR-based devices, which require expensive signal-processing circuitry, FDR sensors deliver industrial-grade accuracy while significantly reducing procurement costs for the user, making them the preferred choice for large-scale smart agriculture deployments.

Application Scenarios: Featuring stainless steel probes and vacuum epoxy resin encapsulation, our FDR sensors offer outstanding corrosion resistance. They support long-term deep-earth burial monitoring and are widely used in precision irrigation, greenhouse automation, and hydrogeological research.