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Most of the serial based devices can be easily integrated with the Ethernet protocols. 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. 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. 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. 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.

Before digital instruments begin to operate, they must be set with measurement system parameters and communication parameters. The communication is based on Modbus TCP converters to Satchwell ™ MN300, MN440, MN500, MN620 (485 NCP protocol) type I-7188E2-S-NCP. Also enables the analysis of long-term work nodes modbus snmp based on charts and collected the data collected. 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 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. Students view the collected data in the display format or choose additional formats including vertical trend, horizontal trend, bar graph, and numerical. 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.

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). For example, thermochemistry, the study of heat and energy associated with chemical reactions or physical transformations, rs485 cable is a perfect lab experiment application for the Brainchild. The RS-485 application in heating, ventilation, air-conditioning unit. A current transformer suitable for the application must therefore be selected. 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. In order to ensure that the instrument is properly protected, fuses must always be fitted to the power cables of the digital instruments and to the measurement inputs of the voltmeter. Choosing an analog instrument ensures good reading stability, due to the mechanical inertia of the needle and the fact that the reader immediately knows whether the instrument is operating normally or if the reading is out of range. The only possible reference is the reading of the displayed value, for example, of the current.

The parameters chosen for a current transformer are not only the rated current, the secondary current and the power, but also the type of assembly. In a single phase system, analog and digital instruments are selected to measure voltage, current, frequency, and power factor. In three-phase systems without distributed neutral in which the loads are balanced and symmetrical, an insertion can be made, i.e. two current transformers instead of three can be used; the instrument will calculate by difference the third phase which is not measured directly, considering it as identical to the other two. Connecting analog instruments is very simple; you just need to connect the phase and neutral cables to the instrument. If 800 A Current is to be measured, in most cases the instrument cannot be connected directly to the line. It contributes to the reduction of transmission losses, thus increasing network reliability and comfort of heat consumers. What it does is that's after sensing the temperature in the room and yet when you're making adjustment to the thermostat, it actually sends the data to the controller, which could be controlling that, the temperature, turning on and off the AC to heat or cool the room up.