WaterScout SM 100 Soil Moisture Sensor
The WaterScout SM 100 Soil Moisture Sensor combines affordability and accuracy into a sensor that is easy to install. The sensor is composed of two electrodes that function as a capacitor, with the surrounding soil serving as the dielectric. An 80 MHz oscillator drives
the capacitor and a signal proportional to the soil’s dielectric permittivity is converted to an output signal that is then converted to volumetric water content.
Accuracy | 3% VWC @ EC < 8 mS/cm |
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Resolution | 0.1% VWC |
Oscillator frequency | 80 MHz |
Output | Analog voltage proportional to excitation voltage (0.5 to 1.5 V for a 3V excitation) |
Power | 3 to 5V @ 6 to 10mA |
Range | 0% VWC to saturation |
Connector | 2.5mm stereo pin |
Temperature | 33 - 175°F (0.5 - 80°C) |