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The basic rate is 54 Mb / s, but in practice works best in the range of 20 Mb / sRadio network in the case of district heating has proven to be an excellent alternative to other types of communication systems and in this application is an innovative solution. After having defined the type of instrument best suited to the needs, if the measurement is performed by indirect insertion, the accessories of the measuring system, such as current and voltage transformers must be chosen with care. If there is a large potential difference between neutral and earth, this could negatively affect the measurement, in the case of instruments with non-galvanically isolated measurement inputs. In multifunction instruments, not only the cables connected to the measurement, but also the RS485 serial port and the analog and digital inputs and outputs must be wired. In digital instruments, this indication is not. Some measuring instruments have bar indicators that show the current level as a percentage of the set full scale. The analog instrument indicates the point of the measurement scale on which it is located, indicating the upper and lower limits. Before digital instruments begin to operate, they must be set with measurement system parameters and communication parameters.

These devices allow you to view and modify the parameters of heat controllers, connected to the RS485 port via the communication protocol and the NCP to monitor the parameters of heat meters (Mbus), connected to RS232 port via a converter RS232/Mbus (M-bus master). As a communication protocol Modbus TCP is selected as the Ethernet due to its versatility, the continuing growth and various protocol converters, has now become the standard in industrial solutions.Built a separate communication network, based on radio Ethernet (WLAN) 802.11a, which uses a frequency of 5 GHz. The communication is based on Modbus TCP converters to Satchwell ™ MN300, MN440, MN500, MN620 (485 NCP protocol) type I-7188E2-S-NCP. There is no standard connector for the protocol. The fastest RS-485 transceivers out there right now are running about 50 megabits. In connection with the need for rapid response by the central location for all types of heating systems failures and malfunctions substations located in many parts of the city, MEC Kolobrzeg decided to execute a remote system monitoring and control of heating systems.The monitoring system is based on Citect SCADA visualization software v. 6.0. This software is a standard for the entire heating system to monitor the MEC Kolobrzeg.Delivered new server running under operating system Windows Server 2003. Visualization of the nodes attached to an existing application that supports the entire heating plant.

In addition to the ease of integration, minimum requirement of processing power and reliability of the connectors further helps to favor these serial over Ethernet communications.A device server is used to control the whole setup via a networking technology. It also has a keypad display attached and the other required hardware interfaces like the RS232, RS422, RS485 etc. This server can customized beforehand to carry out the pre-defined tasks. Teachers can set up the display to a projector, allowing an entire class to view the data representations, and students can print the data collected from any of the display formats. In a three-phase system, instruments can be installed that measure the single electrical parameter, one per phase, or a voltmeter and a current can be installed with the voltage and current switches, allowing the measurements to be displayed in sequence. The VR-18 Paperless Chart Recorder can be connected to a PC with an Ethernet cable allowing students to use the Brainchild's FREE software, allowing for streaming live data or downloading the data to an Excel spreadsheet to further manipulate the information for reports and assignments. Educators and students working in laboratories and classrooms in universities across the country often use older paper chart recorder technology to record their live data onto hard copy.

The Brainchild also entirely eliminates the need to search through large amounts of hard copy records to find earlier data. For example, thermochemistry, the study of heat and energy associated with chemical reactions or physical transformations, is a perfect lab experiment application for the Brainchild. A single complex experiment or several individual experiments using multiple sensors can easily be monitored given the Brainchild's capability to record real-time inputs during one session. After the experiment is completed, the class can view statistics from the recorded data including instant, average, min and max values. The Brainchild's built-in display allows teachers and students to get a clear review of all measured data on its 6.4'' VGA Color LCD displaywith flexible screen configuration. Students view the collected data in the display format or choose additional formats including vertical trend, horizontal trend, bar graph, and numerical. Thanks to paperless chart recording technology; students and teachers are now able to clearly and conveniently visualize their experimental data. Paperless chart recording is a much more user-friendly solution with an interactive dialogue simplifying both setup and operation procedures.

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