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

CS605-L 3-Rod TDR Probe with RG58 Cable

The CS605 is used in TDR100- and TDR200-based systems. This probe is recommended for typical soils (soil bulk conductivity ≤1.5 dS/m) and cable lengths of less than 15 m (measured from the tips of...read more

CS610-L 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

CS630-L 3-Rod 15 cm TDR Probe with Standard Cable

The CS630 is used in TDR100- and TDR200-based systems. This probe consists of a Santoprene head, three pointed rods, and a standard RG58 cable. The length of each rod is 15 centimeters, allowing the p...read more

CS635-L 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

CS640-L 3-Rod 7.5 cm TDR Probe with Standard Cable

The CS640 is used in TDR100- and TDR200-based systems. This probe consists of a Santoprene head, three pointed rods, and a standard RG58 cable. The length of each rod is 7.5 centimeters, allowing the...read more

CS645-L 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

CS605G Installation Tool for the CS605

This tool aids insertion of a CS605 or CS610 TDR probe in high density or rocky soils. The CS605G has rods of similar diameter and the same spacing as the CS605 and CS610. The tool can be driven into...read more

Soil Moisture, Temperature, and EC Sensors

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

Retired Products

17055-L DOT TDR 20 cm Rod, Right-Angle Probe with RG8 Cable

17056-L DOT TDR 20 cm Rod, Right-Angle Probe with RG58 Cable

CS600 Midwest Special Services 2-rod TDR Probe

CS600G Probe Insertion Guide for CS600

CS600P Probe Insertion Pilot Tool

PB30-58 Soil Moisture Probe

PB30-58-L Soil Moisture Probe

PB30-8-L Soil Moisture Probe

TDR LO-LOSS TDR Lo-Loss Soil Probe

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