The Conductivity, water content and soil temperature sensor probe (Decagon GS3) can measure many types of growing media, specially in greenhouse applications where the probe can be inserted easily into different types of soilless substrates. The GS3 sensor determines volumetric water content (VWC) by measuring the dielectric constant (εa) of the medium using capacitance / frequency-domain technology, the temperature using a thermistor, and electrical conductivity using a stainless steel electrode array.
Volumetric water content
- 0.002 m3/ m3 (0.2% VWC) from 0 to 40% VWC
- 0.001 m3/ m3 (0.1% VWC) > 40% VWC
Bulk electrical conductivity
Accuracy: ±1 ºC