PORTABLE ANALYZER FOR IMPEDANCE SPECTROSCOPY

Abstract

Abstract − The paper presents an impedance analyzer designed for impedance spectroscopy of objects located in the field. The use of the specialized microsystem AD5933 was assumed. The analysis and tests of the microsystem in the configuration proposed by the manufacturer showed the limitations having meaningful influence on the impedance measurement accuracy. In order to eliminate disadvantages of the microsystem, a new solution using two AD5933 microsystems was proposed. This solution allows to measure impedance in a wide range of 100 Ω ≤⎜Zx⎜ ≤ 10 GΩ at measurement frequencies in the range of 0,01 Hz ÷ 100 kHz.