Monitoring - Long term and short term measurements

It is well known that modern energy efficient buildings are usually provided of detailed Building Energy Management System. The BEMS controls building environment, mechanical and electrical systems, etc.. This system is critical for the optimized energy control of the building and the plants. An efficient control of building environment and HVAC plant is necessary condition for achieving energy efficiency of the building and it is the result of a congruent design process of both hardware and software systems. Because monitoring plant is embedded in BEMS, these systems allow, in many cases, the possibility of data recording for days or weeks, then they can accomplish not only the control task, but long term monitoring task as well. For its own nature, BEMS should be able to provide a detailed monitoring network: indoor conditions of almost all rooms of these kind of buildings are continuously monitored (Room temperature), all main plants functions (heating, cooling, ventilation, lighting) are controlled and their status recorded.