Watermark sensor measures soil water tension. As the tension changes with water content the resistance changes as well. That resistance can be measured using the sensor. The sensor consists of a pair of highly corrosion resistant electrodes that are imbedded within a granular matrix. The sensor is a resistive device that responds to changes in soil moisture.
Can be used with CaipoBase and CaipoWave.
Technical Data
Dimensions:22mm x 82mm
Temp. Compensation: - automatic
Interface:Analog
Temperature range:-40°C to +60°C