FIELD: digital measurement technology; analog-to-digital conversion in portable medical equipment. SUBSTANCE: device has electrochemical current source 1 used as a transducer, first gate 2, information analysis and processing unit 3, display 4, power line 5, zero- potential bus 6, zero-crossing detector 7, comparator 8, operational amplifier 9, integrating capacitor 10, first current-limiting resistor 11, second, third, fourth and fifth gates 12 - 15, reference voltage source 16, storage battery 17, power switch 18, second, third and fourth current-limiting resistors 19 - 21, control button 22, and control unit 23. EFFECT: improved conversion accuracy due to linearization of transducer characteristics; improved reliability of measurement results due to optimized reading time and controlled power supply; reduced power consumption even with the device being continuously in "on" condition to store some preceding readings; extended application of electrochemical current sources. 6 dwg
