FIELD: automatic control systems. SUBSTANCE: device has microcontroller 1 connected to sensor 4 through series-connected digital-to-analog converter 2 and voltage-controlled generator 3. Sensor 4 is connected to comparator 8 via delay element 6 and analog storage element 7. Comparator in its turn is connected to indicator unit 9. Frequency meter 10 is connected to generator 3 and to microcontroller 1. EFFECT: improved accuracy of measurements. 2 cl, 3 dwg
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