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by: Jaihind Agro Services, Nashik
Jaihind Agro Services engaged in offering Watermark Sensors, which are the solid state electrical resistance sensing devices that are used to measure soil water tension. As the tension changes with water content the resistance changes as well and that resistance can be measured with the help of these instruments. These sensors consists of a pair of highly corrosion resistant electrodes that are imbedded within a granular matrix and the current is applied to these instrument to obtain a resistance value. Then watermark monitor correlates the resistance to centibars (kilopascals) of soil water tension.
These instruments are designed to be a permanent sensor, placed in the soil to be monitored and “read” as often as necessary with a portable or stationary device. Internally installed gypsum provides some buffering for the effect of salinity levels normally found in irrigated agricultural crops and landscapes.
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