Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back System for Obtaining of Impedance Characteristics of Technical Liquids on the Basis of Instrument-Top Box to PC Type АСК-4106 I.K. NIKIFOROV Covers the General requirements to monitoring systems of quality indicators of technical liquids, which should take into account the changes of parameters of liquids in a wide range under the influence of temperature, group composition and the presence of impurities, that is their a priori uncertainty. It is shown that one of the ways these requirements is the use of specialized computer systems, including the mathematical apparatus of verification (approval) of the data that form the necessary information for adaptive and trainees systems, for example, on the basis of artificial and fuzzy neural networks. It was noted that the quality of training neural networks and their subsequent effective work requires a large amount of measurement data. It is shown that the electro-physical methods of diagnostics of materials and substances help to obtain information about the physical, chemical and biological properties of the investigated object in the form of an electrical signal that is most convenient for the subsequent conversion of electronic devices. Main principles of импедансометрия related to electrochemical methods, one of the directions of electrophysical methods of diagnostics. It is noted that General lack of импедансометр and адмиттансометр firms, specializing in the production of such devices is their high price. Offered a cheaper option impedance characteristics (amplitude and phase-frequency) technical liquids based on inexpensive device-top box to the PC АСК-4106 company AKTAKOM. Detail the system of measurement of impedance characteristics of liquids on the basis of the indicated device. A method of obtaining of impedance characteristics of liquids with this instrument, with accompanying notes, marking the features of measurements. In the end, it is shown that using inexpensive equipment, it is possible to get acceptable precision impedance, amplitude and temperature characteristics, which contain the necessary information for the identification and monitoring of parameters of technical liquids used in stationary laboratory conditions. Keywords: the control system of quality indicators of technical liquids, impedance characteristics. DOI: 10.25791/pribor.03.2020.1159 Pp. 26-32.