FIELD: the invention refers to measuring technique and may be used for researching on various dielectric materials and also in agriculture for researching on electrophysiological state of seed.
SUBSTANCE: the arrangement for measuring resistance of dielectric material has an amplifier 1, a microcontroller 2, an indicator 3, keys 4 an 5, a condenser sensor 6, in whose cavity there is dielectric material whose resistance R it is necessary to measure. The condenser sensor 6 is connected with the first facing to the noninverting input of the amplifier 1, with the second facing it is switched to the first output of the key 5, whose second output is switched to the above-zero clamp of the source of nutrition, the inverting input amplifier 1 is switched to a common wire, the output of the amplifier 1 is switched to the analog input of the microcontroller 2, in parallel to the condenser sensor 6 is switched the key 5, the control outputs of the keys 4 and 5 are switched to the outputs of the microcontroller 2, an indicator 3 is switched to the output of the microcontroller 2.
EFFECT: increases accuracy of the arrangement.
2 cl, 1 dwg
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Authors
Dates
2007-05-20—Published
2005-11-09—Filed