What are the current converters?
generally changes electricity converters to other forms of energy, as in the case of audio speakers or from other forms of energy to electrical signals, such as in pressure converters. However, the term converters are usually used to describe the device that converts the signals of the alternating current (AC) or direct current (DC) to signals of analog instruments used in industrial control systems. Here they would convert the measured current value of AC or DC, possibly power supply to an engine or pump, an analog process value of DC 4-20 milliamp (MA), or a pneumatic signal of 3-15 psi for pneumatic control systems.
The term is also used to define specific conversion devices. These devices change 4-20 mA DC analog procedural signals to 3-15 psi analog pneumatic signals to form proportional pneumatic control valves or convert pressure signals to proportional 4-20 mA DC analogProcess of processuals. These measurements are usually used to describe a process that works normally. By converting actual signals from the tool to these standardized ranges, measurements falling outside these ranges can be recorded and used in diagnostics.
Current converters during the 70s and 80s came into extensive use because there were computer large procedural plants such as oil refineries, computer. Most of them have been checked to this point by pneumatic control systems due to internal tire safety in flammable and explosive environments. To use real -time information coming from many pneumatic process transmitters that measure temperatures, pressures, flows, levels and other variables, their pneumatic outputs had to be converted to electronic signals by pressure on current converters.
were also hundreds of pneumatic Contral VentiLK in these plants that had to receive their output instructions from the control computer that sent these signals as 4-20 mA DC analog current signals. This required a current for pneumatic conversion. The industry soon labeled these converters I to P or I/P, referring to the current input and P indicating the pneumatic output.
most I/P converters convert their electronic signals to pneumatic passage through the winding guilt in the magnetic field, which modulates the nozzle compression in the pneumatic pilot circuit, which provides a pneumatic output of 3-15 dogs. The pressure on current converters use pressure membranes that are mechanically connected to excited deformation meters, piezo sensors or capacitive sensors that control the section of the output amplifier. They then transmit the desired 4-20 mA output for control systems.
The current converter can also describe the sensor type that measures the magnetic flow of the power conductor for the sensory unit for the machine and whyEssential devices and transmit an analog signal MilliaP or voltage for control systems. Converters with fixed core have transformers closed loops, which must be slipped through a temporarily open end of the energy conductor. The converters with a split current core have a suspended side of the transformer ring that can be temporarily opened to slip around the wire that cannot be disconnected. They usually incorporate rectifiers and adjustable output circuits to allow specific calibrations for analog control systems.