Soil Temperature Sensor in use by the St Ives Weather Station in Huntingdonshire & Cambridgeshire
Oregon Remote Thermo Sensor THC238 used at the St Ives Weather Station
Protective enclosure for the transmitter
The Station soil temperature reading is gathered by the Oregon Remote Thermo Sensor THC238 and although this model is weather-proof it was decided to ensure this by installing in a custom built housing made from a high-quality "plastic lunch box".
The Soil temperature Wireless transmitter installed on the station mast
Sensor cable taken below ground with in a protective copper pipe
We had also heard stories of the ground sensors and their respective cables being eaten by rodents so the cable was taken below ground in 15mm copper pipe with the actual sensor isolated from any thermal conductivity by using heavy duty plastic pipe for the final 10cm. The sensor itself is located 20cm below surface level.