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Pepperl+Fuchs safety barrier has two types: Zener barrier and isolation barrier. The isolation barrier can output two mutually isolated signals for use by two devices using the same signal source, and ensure that the signals of the two devices do not interfere with each other, and at the same time improve the Electrical safety insulation performance between connected devices. The isolation barrier of Pepperl+Fuchs safety barrier is the most commonly used type. The isolation barrier adopts a circuit structure that electrically isolates the input, output, and power supply from each other, and meets the requirements of intrinsically safe energy limitation.

Pepperl+Fuchs Safety Barrier

When the loop voltage is close to the safe limit voltage value, the Zener tube is turned on, so that the voltage at both ends of the Zener tube is always kept below the safe limit voltage value. Compared with Zener-style security, although the isolation barrier is slightly more expensive, its other outstanding advantages have brought greater benefits to user applications. The main function is to restrict the dangerous energy in the safe place from entering the dangerous place, and to limit the voltage and current sent to the dangerous place. Comparing the characteristics and performance of Zener and isolation safety barriers, it can be seen that P+F Pepperl+Fuchs isolation barriers have outstanding advantages and a wider range of uses. Although its price is slightly higher than that of Zener safety barriers, from the design Considering the cost of construction, installation, commissioning and maintenance, the overall cost may be lower than the Zener safety barrier. Pepperl+Fuchs has almost without exception adopted isolated safety barriers as the main intrinsically safe explosion-proof instruments in demanding engineering sites. Isolated safety barriers have gradually replaced Zener safety barriers and have become increasingly popular in the field of safety and explosion protection. application. Other Pepperl+Fuchs products include Pepperl+Fuchs ultrasonic sensors, P+F encoders, P+F Pepperl+Fuchs photoelectric switches (photoelectric sensors), P+F power supplies, P+F surge protectors, and so on.