Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back The control and maintenance of functioning reliability for the information environment over modern automatic control systems of technological process Ulitenko K.Ya. The article considers the problems of functioning reliability maintenance for the information environment over modern automatic control system of technological process, which is understood as the system ensures truth of the gauges and sensors readings. The truth of readings’ assess methods are based on the following options: control of measurements’ range, dynamics of the readings variability, message redundancy and use of special technological situations. The use opportunity of these methods is illustrated on the concrete examples.