Constructing Measurement and Control Modules for Critical Infrastructure Objects

This paper analyzes the possibility of achieving high reliability of measurement data from measurement and control modules designed for critical infrastructure objects. The estimation of the error for the method of accurate determination of the division coefficient of a resistive voltage divider, which is invariant to the temperature and temporal instability of its resistors, is conducted. The technique of using the divider for non-disassembly (in situ) calibration of measurement channels during their operation by an embedded subsystem of metrological service is presented.