Analog safety barrier

The isolated analog safety barrier adopts a circuit structure that electrically isolates the input, output, and power supply from each other, while meeting the requirements of intrinsic safety energy limitation. The main function of the isolated analog safety barrier is to limit the entry of hazardous energy into the hazardous area, as well as to limit the voltage and current sent to the hazardous area.

Isolated analog safety barrierAdopting a circuit structure that electrically isolates the input, output, and power supply from each other, while complying with the requirements of intrinsic safety energy limitation. The main function of the isolated analog safety barrier is to limit the entry of hazardous energy into the hazardous area, as well as to limit the voltage and current sent to the hazardous area.

Isolated analog safety barrierIn addition to its functions of voltage and current limiting, it also has the function of current isolation. The isolation barrier is usually composed of three parts: loop energy limiting unit, current isolation unit, and signal processing unit. The loop energy limiting unit is the core part of the analog safety barrier. In addition, there are auxiliary power supply circuits for driving field instruments and detection circuits for instrument signal acquisition. The signal processing unit performs signal processing according to the functional requirements of the analog safety barrier.

Isolated analog safety barrierMain performance:

1.Due to the use of a three party isolation method, there is no need for a system grounding line, which provides design and on-site construction support

For great convenience.

2.The requirements for instruments in hazardous areas have been significantly reduced, and there is no need to use isolated instruments on site.

3.Due to the fact that signal lines do not require a common ground, the stability and anti-interference ability of the detection and control circuit signals are greatly enhanced, thereby improving the reliability of the entire system.

4.Isolated analog safety barriers have stronger input signal processing capabilities and can accept and process signals from thermocouples, thermistors, frequencies, and other sources.

5.Isolated analog safety barrierIt can output two mutually isolated signals to provide to two devices using the same signal source, ensuring that the signals of the two devices do not interfere with each other and improving the electrical safety insulation performance between the connected devices.