The 100SMT is an accurate soil moisture probe for monitoring water content and soil temperature.
The oscillation frequency is related to the dielectric permittivity of the surrounding medium.
The relation between the permittivity and the soil moisture depends on the soil type and the soil temperature. Therefore all dielectric measurement techniques require a material and temperature dependent calibration for highest precision.
|Multilayer printed circuit board||Butyrate body, ceramic tip, neoprene stopper|
|Overall dimensions||220 x 32 x 10 mm|
|Connector cable length||1-10 m|
|Volumetric water content accuracy||~ 1.5% (depending on soil specific calibration)|
|Volumetric water content resolution||~ 0.5%|
|Temperature range for temperature||-55°C to 125°C|
|Temperature range for permittivity||-10°C to 70°C|
|Temperature accuracy||± 0.5°C|
|Weight||approx. 250 g|
|Power consumption||65 mA for less than 1s (during measurement)|
|Voltage supply||4-12 VDC, up to 28V on request
Reverse polarity protection and overvoltage protection
|Interface Needed||PRO1300 — SMT Soil Moisture Interface needed|