TDR Probes and Installation Tools Probes for soil volumetric water content and soil bulk electrical conductivity

About TDR Probes and Installation Tools

Impedance along the rods of TDR probes varies with the dielectric permittivity of the surrounding soil. Because the dielectric permittivity of soil primarily depends on the amount of water present, the soil volumetric water content can be inferred from the reflected measurements.

Product Line
Retired Products

Product Line

CS610 3-Rod TDR Probe with RG8 Cable

The CS610 is used in TDR100- and TDR200-based systems, and it is recommended for typical soils (soil bulk conductivity ≤1.5 dS/m). Its RG8 cable allows the CS610 to have cable lengths longer than 1...read more

CS635 3-Rod 15 cm TDR Probe with Low-Loss Cable

The CS635 is used in TDR100- and TDR200-based systems. This probe consists of a Santoprene head, three pointed rods, and a low-loss LMR200DB cable. The length of each rod is 15 centimeters, allowing t...read more

CS645 3-Rod 7.5 cm TDR Probe with Low-Loss Cable

The CS645 is used in TDR100- and TDR200-based systems. This probe consists of a Santoprene head, three pointed rods, and a low-loss LMR200DB cable. The length of each rod is 7.5 centimeters, allowing...read more

Soil Moisture, Temperature, and EC Sensors

Soil volumetric water content sensors (sometimes referred to as soil moisture sensors) measure the water content of soil. These sensors can be used to estimate the amount of stored water in a profile...read more