Description
The SMT100 soil moisture and soil temperature sensor with SDI-12 interface provides an outstanding accuracy and is specifically designed for demanding applications in science and agriculture.
Soil volumetric water content (VWC)
- Using factory calibration up to ± 3% (VWC) in mineral soils with moderate salinity from 0 to 50% VWC
- Using medium specific calibration up to ± 1% (VWC)
Teperature
- Typical ± 0.2°C, max. ± 0.4°C over full range (analog version ± 0.8°C)
Additional output (SDI-12 digital versions only)
- Raw measurement data
- Dielectric permittivity
Resolution
- 0.1% volumetric water content or better
- 0.01°C or better (analog version 0.2°C)
Range
- 0 to 60% volumetric water content (up to 100% volumetric water content with limited accuracy)
- Temperature: -40 to +80°C (analog version -40 to +60°C)
Power
- 4-24 V DC, up to 40 mA during measurement (analog version 12 – 24 V DC for 0 – 10 V output)
- Measurement time digital versions: less than 50 ms
- Measurement time analog versions: less than 500 ms
Cable length
Sensor dimensions