FIELD: the invention refers to electric measuring technique , particularly to automated controlling arrangements and may be used for controlling of the parameters of explosive cartridges.
SUBSTANCE: it is used for after operations control of quality of electric contact welding , quality control of sectional electrical contacts in multiampere current conductors and in other cases when it is necessary to measure small values of resistance. The essence of the invention is in that in quality of text signal an alternate current is used and the signal received from the measured resistance in the shape of alternate voltage proportionate to resistance is filtered, rectified and transformed into a digital equivalent.
EFFECT: decreases errors of drifting of "zero" and interferences in the measuring chain.
2 dwg
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