The Brainchild's programmable alarms and messages give instant notification of high levels of temperature and other critical events. CAS DataLoggers together with high-quality manufacturer Brainchild has the solution with the VR-18 Paperless Chart Recorder, a high resolution (true VGA, 640x480 pixels) 18-channel data logger featuring an infrared detector, plug & play I/O card, high flexibility, and user-friendly operation, all in a compact size. Users now have the ability to monitor their live data and store all the information on the Brainchild itself or on a connected PC. 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. 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.
The shielding may be braided (be formed by a mesh of thin conducting wires) or be a foil (consisting of a sheet of metal wound around the conductors): the two types are equivalent. The cabling of the industrial communication systems (Modbus RS485) is different in some ways from the cabling used for power cabling and the electrician may experience some difficulties if he is not an expert in Modbus communication networks. Flexible and rigid cables or bars for power transport can be installed in a power panel. 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 a digital instrument guarantees better readability, also in low light conditions, especially for instruments with LED displays, and immediate reaction to measurement variation. Multifunctional instruments can be used in different distribution systems. The sizing of the measurement system begins with knowing the main parameters of the plant; in particular, from the characteristics of the protection switch, the type of distribution system, the rated current, the rated voltage and the type of busbar can be known.
The instrument must be selected according to the type of distribution system. This type of multifunction instrument is ideal in panels where space is limited, in substation panels and in main industrial panels. The main problems that arise during the testing phase can be due to incorrect installation of instruments and accessories. Two auxiliary power cables should always be connected for digital instruments. Because of the differential signal, any noise is subjected externally to the cable is basically subjected to both cables. Also, its robustness. It is a differential signal. Longer branches could cause signal reflections and generate disturbances and consequent errors in the reception of data. The main cable must be no longer than 700 m! One of the main reasons why this standard is used it's because wireless rs485 is able to send data a long distance. Additionally, the Brainchild's standard Ethernet and optional RS-232/RS-422/RS485 communication enable users to access data onsite from a remote location via the RS serial interface or Ethernet networking. Got rid of the problem lay long lengths of cable between receiver points and the heating plant, and obtained an easy and convenient access to the substation.The control system was designed and built node in cooperation with the company TechBase Sp.
The POE version makes this a single cable connection that will allow monitoring from anywhere in the world; anywhere with internet access that is. 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. There are different families of products on the market: instruments which measure a single electrical parameter (voltage, current, frequency, and phase angle cosϕ), generally used in single-phase systems, as instrumentation on the machine, and instruments allowing all the electrical parameters to be measured and displayed, both for the single-phase system and for the three-phase system. In a single phase system, analog and digital instruments are selected to measure voltage, current, frequency, and power factor. Some measuring instruments have bar indicators that show the current level as a percentage of the set full scale. 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.
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