computer hardware, consumer electronics, electronic components

Moisture meter

In modern farming applications, it is desirable to know the moisture content of crops as this can be used to determine the optimum times of various harvesting processes. Moisture meters are currently used for cereal grains, oleaginous and proteinaceous grains or other granular or powdered products. Moisture meters exist today in various forms. There are complex moisture meters used by agriculture and gardening professionals as part of a larger weather monitoring or irrigation system. Known moisture measurement devices generally perform indirect (for example, hyperfrequency, infrared or dielectric) measurements, and among them, the capacitive moisture testers are quite satisfactory. In capacitive moisture meters a capacitor sensor or electrode is maintained in the vicinity of material the moisture content of which is to be measured. Such meters are based on the fact that the capacitance of the sensor varies according to the presence of foreign material and more particularly, the capacitance is directly proportional to the moisture content of the material. In the weather monitoring systems, moisture meters generally are used to record soil moisture along with a collection of other weather related data to detect trends to aid in making decisions affecting crop yield.


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