Under information-measuring system we should understand the group of united measuring, calculative and other auxiliary hardware which are subject to the receipt of measurement information, its transformation and processing for its introduction in the required condition, control logical operations, diagnostics, identification etc.
Those systems which measuring information is considered the information about physicochemical structure of substances and (or) their physicochemical conditions, make the group of information-measuring systems of physicochemical structure and characteristic of the substances.
Let us remind that physicochemical structure means elementary, molecular, functional and phase structure of substances which is shown through the concentration of their components. The physicochemical structure of substances can be characterized as the density, viscosity, electric conduction etc. which are inseparably connected to their physicochemical structure of substances.
The present article is devoted to these questions.