Benefits and Features
Compatible with most Campbell Scientific data loggers
High accuracy and high precision
Fast response time
Designed for long-term unattended water content monitoring
Compatible with AM16/32-series multiplexers, allowing measurement of multiple sensors
Probe rods can be inserted from the surface or buried at any orientation to the surface.

Technical Description
The CS616 is comprised of two 30-cm-long stainless steel rods connected to the measurement electronics. The circuit board is encapsulated in epoxy, and a shielded fourconductor cable is connected to the circuit board to supply power, enable probe, and monitotrhe output.
The CS616 measures the volumetric water content of porous media (such as soil) using the time-domain measurement method; a reflectometer (cable tester) such as the TDR100 is not required. This method consists of the CS616 generating an electromagnetic pulse. The elapsed travel time and pulse reflection are then measured and used to calculate soil volumetric water content.