Soil Moisture and Soil Temperature Sensor SMT100 SDI-12

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.

Blade Electronics Cable

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

• 10m

Sensor dimensions

• 18.2 cm x 3 cm x 1.2 cm