We manufacture this pack on a quick CPC disconnect. It is made of a soil temperature sensor, 3 pairs of Watermark® sensors, and air temperature sensor. The 6 Watermark® sensors are glued-reveted on a souple pvc tube, swagged in double diameter, to secure a perfect contact with the soil. Each of the 3 pairs of Watermark® sensors comes on a shield cable, with a lenght of respectively 6m, 6m and 14 m. This allows, in this case, the minimum of 3 rep x 2 depths, a minimum to face the heterogeneity of soil structure, commun in cultivated soils, and heterogeneity of water distribution inherent to different irrigation modes : fload, row, apsersion, micro-irrigation, drip irrigation. The Watermark® sensors measure water tension on a range 0 to 239 cb, allowing irrigation management in almost all situations of crop, climate, soil, irrigation equipment.
After 5 to 7 years of service, we test and repair those packs in our plant, which allows renew and give them a second life, at reduced cost.