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Preliminary cooling of the sensor with a mill up to T0 temperature - 5-8 °C, the corresponding selection of mass of test of controlled m1 bulk, the sensor t2 and sensor material with the specific heat of C2 provides that in the course of grind temperature of the material T3 turns out lower, than the initial temperature of test of the controlled material T1, T3

For example, the experiments made at a temperature of air and grain of wheat 17-21C showed that temperature of the ground grain and the sensor with a mill in the course of grind of the first sample of wheat increased to the 30C, second - (with a temperature of 27-28C) to 34-35C, and the third sample in the same sensor (with a temperature of 30-32C) to 40-42C.

The offered way gave the chance almost completely to eliminate the making error caused by losses of moisture in the course of grain grind therefore it was succeeded to increase the accuracy of measurement of its humidity VZPT-1 hydrometer (to bring a measurement error to ±0,6% against 1-1,5% in the existing capacitor hydrometers).

Therefore for increase of accuracy of measurement of humidity of the grain the way including the room of controlled grain in the capacitor sensor combined with a mill, grind of grain to a certain disperse state, consolidation of the ground weight ( between sensor electrodes up to the constant volume, measurement of capacity of the sensor and determination of humidity according to in advance made calibration characteristics is offered.

In the course of grind in the cooled sensor there is a heat exchange between test of grain and the cooled sensor, thus the internal energy emitted at grain test cooling is spent for heating of the sensor with a mill.

In case of measurement of humidity grain (wheat, a rye, barley, oats, millet, etc.) it is not possible to use directly this way for the reason that grain at low humidity do not contract and consolidation is not given in.

In drawing the capacitor sensor realizing a way is shown. It consists of the case of a measuring chamber which bottom represents an electrode of 1 zero potential of the condenser - the capacitor sensor, an electrode of high potential (potential electro 2, covers 3 insulating (ftoroplastovy) cylinders 4 on which the potential electrode 2 fastens, of a knife 5 and the thermodiode Between electrodes 1 and 2 controlled material - grain 7 meal is placed; sensor 8 case; directing grains 9; bearing 1