Truebner SMT100 SDI-12. Soil Moisture and Temperature Sensor.

Truebner SMT100 capacitive Soil Moisture Sensor with integrated Temperature Sensor with SDI-12 interface

Premium capacitive Soilmoisture Sensor for Soil Moisture Measurements and Hydrological Scientific Data Collection.

Technical Data:
- Interface: SDI-12
- 10 m cable
- 4 - 24 V DC
- Max. 40 mA during measurement
- Measuring time < 50 ms
- Dimensions: ca. 18.2 cm x 3 cm x 1.2 cm

- Measurement accuracy:

Volumetric water content (VW): At factory calibration up to ± 3% (VW) in mineral soils with medium salinity of 0 to 50% VW. At soil-specific calibration up to ± 1% (VW), measuring range 0 to 60 % volumetric water content (up to 100 % volumetric water content with limited accuracy), resolution 0.1% in volumetric water content or better.

Temperature: Typically ± 0.2°C, max. ± 0.4°C across the entire measuring range, measuring range -40 to +80°C, resolution 0.01°C or better

Additional measurements: raw data, dielectric permittivity

Specification Truebner STM100 SDI-12:

Soil moisture and temperature sensor, measuring range 0-100% VWC, -20 to +80 degrees Celsius, digital interface SDI-12 ,
Supply voltage 5-28 VDC, 10 m cable length