Microprocessor system for automatic control of logs' steaming process

This paper presents an electrical scheme and working algorithm of the system for automatic control of the steaming medium temperature tm and level of condensed water with inbuilt specialized microprocessor programmable controllers. The system calculates the set values, takes automatic measurements, displays, and regulates the temperature of the steaming medium, and measures and regulates the level of condensed water in the steaming pit, as well. Besides this, the system signals and records in its own controller memory the values and times of the occurrence of unallowably high deviations of tm from its set values with a possibility for a resulting reading and analysis of these records on the controller displays. Some of these systems are already integrated, as a result of which the quality of the steaming process has improved and the specific heat consumption has been reduced significantly.