A.A. Khlyunev- Leading Enginer, LLC «Vzor», Nizhny Novgorod E-mail: khlunev_andrey@mail.ru V.P. Khranilov- Dr.Sc. (Eng.), Associate Professor, Nizhny Novgorod State Technical University n.a. R. E. Alekseev E-mail: hranilov@nntu.nnov.ru

The most important part of modern technological cycle heat and power systems (CHP) is a high-quality water treatment and adherence to water chemistry. There are a range of automatic analyzers for monitoring and prediction of chemical solutions, presented a series of MAPK, developed and produced in LLC \"VZOR\": conductivity (MARK-602); pH-meter (MAPK-902); Na-measures (MAPK-1002); dis-solved oxygen analyzer (MAPK-409); dissolved hydrogen analyzers (MARK-509). Analytical devices can significantly improve the quality of measurements and create an opportunity to implement continuous monitoring. Modern information and analytical systems include our intelligent sensors (IS) as sensing elements, providing measurement information. The ability of a system of intelligent sensors (SIS) to perform logical and easy to manage operations to carry out digital processing of primary information provided by built-in microcontroller and interface for data transmission subsystem IS of a higher level. Presence in SIS computing resources and information processing tools to allow additional functions to greatly enhance the functionality of the water chemistry monitoring systems in power plants. These additional features are provided with additional software that can realize the function of self-test and self-diagnosis. Measuring reliability ensured by the ability to perform the predetermined function IS, while maintaining operational charac-teristics in the specified range for a required period of time. During diagnostic finding the causes of violations of water chemistry measurements is checked for acceptability: the existence of irregularities in the process of sample preparation; output measured value of the specified range; faults in modules for receiving and processing information; disagreements with the results of the control measurements. In order to evaluate the effectiveness of water treatment facilities SIS provides experimental data obtained by the analyzer and chemical analysis. Investigation of the array of test results gained during the 2 years of operation revealed that the variation in the readings of the instruments did not go beyond the permissible error passport. The use of automatic analyzers, forming the basis for the construction of SIS allows for water: predict the reliability of the equipment and the vehicle to obtain more objective integrated data on dissolved oxygen concentration and evaluating the corrosion rate of these systems; analyze the work of boilers and other heating sources and to determine the specific equipment that requires adjustment or replacement.

 

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