Pepperl+Fuchs Safety Barrier An industrial explosion-proof expert by your side

The P+F Pepperl+Fuchs safety barrier intrinsically safe system has attracted more and more attention in the world, and the safety barrier as its main component is also known by people. Regardless of whether it is a zener grid or an isolation grid, the energy is controlled to meet the requirements of explosion-proof regulations. The on-site explosion-proof function of the safety barrier is very powerful, so it is called an indispensable heavyweight product in industrial production.

The P+F double plus zener gate, its main component is a zener tube, also called a Zener diode. But the Zener diode can only control the voltage value, so what element controls the current that constitutes the second element of electrical energy? Resistor, a resistor with a certain power bearing capacity acts as a current limiter here, so that the current from the safety barrier to the dangerous area is always controlled within an allowable range, thereby achieving intrinsic safety. So what is the isolation barrier to control energy? The pulse transformer is the main component of the isolation safety barrier to isolate the energy. With it, the energy flowing to the dangerous area will be controlled. Because the safety barrier has a high-frequency oscillating circuit, radio frequency interference will be generated, which is not good for the system, and the isolation safety barrier is also relatively easy to damage. But the isolation safety barrier does not require intrinsically safe grounding, which is its advantage over the Zener safety barrier. The difference between intrinsic safety and explosion-proof is that the intrinsic safety of the equipment material and circuit is required, and the explosion-proof is through the shell and additives. Intrinsically safe type is intrinsically safe, and explosion-proof type is required for explosion-proof performance.