Bioimpedance analyzers are non-invasive instruments that practitioners use to measure physiological parameters of body composition. The existing technology for measuring bioimpedance is constantly being improved, and more and more commercially available analyzers that do not solve the problems with measurement errors and the information content of the obtained data appear on the market. This article proposes an automated bioimpedance measurement system for studying body composition with a reduced impedance measurement error up to 1% and an increase in the information content of the human body composition due to the expansion of the impedance frequency measurement from 0.3 kHz to 2000 kHz.