What are the main types of signal isolators

Signal isolator is connected to the industrial production field instrument and the main control room in the middle of the electrical equipment, according to the power supply, input, output of the middle of the reliable protection, reasonable processing of industrial automation automatic control system field impact problems, in order to ensure the smooth and reliable operation. According to the different requirements of the site, the key is divided into isolators, distributors and safety grids.

Isolator: In order to improve the working capacity of the instrument load and ensure that the instruments connected with the same data signal interact with each other and improve the electrical characteristics, it is necessary to apply the isolator to collect, enlarge, calculate, and solve the anti-interference data signals of the input working voltage, current flow or frequency, resistor and other data signals, and then output the protected current flow or working voltage data signals. Safe output for secondary instrumentation or plc\dcs applications.

Distributor: Industrial production site generally must use two wire transmission technology, the distributor not only for the intelligent transmitter and other primary instruments to produce 24V power distribution equipment, in addition to the input of the current flow data signal to collect, increase, calculate, and carry out anti-interference solution, and then output protection of the current flow and working voltage data signal, for the secondary instruments or other instruments behind the application.

Safety gate: Some unique industrial production sites not only need two line transmission, but also show that the power supply of the distribution equipment has a data signal protection effect, and must also have the characteristics of the flame explosion-proof type. The safety grid can reliably resist the output power of the power supply, avoid the ignition of the power supply, data signal and the middle of the ground, and overcurrent protection and voltage reduction double limit signals and power circuits, limiting the kinetic energy into the risk site within the budget quota.