CS610

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 15 m. The maximum distance allowed between the reflectometer and probe tip is 25 m as measured from the tips of the probe's rods to the reflectometer. This probe consists of three pointed, large-diameter rods and a large epoxy head allowing installation in rugged environments.

The CS610 acts as a wave guide. Impedance along the rods varies with the dielectric permittivity of the surrounding soil. Because the dielectric permittivity of soil primarily depends on the amount of water present, soil volumetric water content can be inferred from the reflected measurements. Soil bulk electrical conductivity is determined from the attenuation of the applied pulse.

Campbell Scientific offers six TDR probes for our TDR100- and TDR200-based systems. The probes have different rods and connector cables allowing them to be used in different soil types and with different cable lengths. Other TDR probes offered by Campbell Scientific inclde the CS605, CS630, CS635, CS640, and CS645.