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Proper use of safety barriers is essential to ensure that, in the event of failures in the intrinsically safe instruments on site or in control room equipment such as PLCs, DCS systems, and power supplies connected to these barriers, the sparks or heat generated by the instruments and equipment remain within safe limits. This post shares knowledge regarding the use of isolation safety barriers; it is essential reading for those working in the field of instrumentation. 1. The safety barrier is installed in a safe location. Safety barrier: yunrun.com.cn/product/list_85.html. 2. The insulation strength of the wires connecting the isolated safety barrier must be >500V. 3. It is strictly prohibited to use a megohmmeter to test the insulation between the terminals of the isolation barrier. 4. Cables with parameters that meet **the specified requirements must be used as the transmission lines for the isolation safety barrier. 5. Only field instruments that have obtained an explosion-proof certification can be connected to an isolation safety barrier to form an explosion-proof system. 6. The intrinsically safe side of the isolation barrier must not be confused with other power sources (including those of other intrinsically safe circuits). 7. The cross-sectional area of the multi-core wire connecting the hazardous area and the isolation barrier must be >0.5 square millimeters. 8. When powering on to test the isolation safety barrier, attention must be paid to the barrier model, power polarity, voltage level, and wiring labels. 9. Using safety barrier products that do not possess an explosion-proof certification in hazardous environments can very likely lead to serious safety accidents. 10. For isolation safety barriers that have already obtained an explosion-proof certification, their components or structure must not be altered arbitrarily, to prevent any impact on their explosion-proof performance. 11. It is recommended to use blue wires for the wiring of the intrinsically safe side of the isolation safety barrier. Intrinsically safe wires and non-intrinsically safe wires must be laid separately, without any errors or confusion. 12. An intrinsically safe explosion-proof system composed of primary instruments and isolation safety barriers must be inspected and approved by a **designated explosion-proof testing institution before it can be used. 13. The insulation of the system’s wiring can only be checked after all connections to the isolation barrier have been disconnected; otherwise, it may cause damage to the components inside the isolation barrier. 14. If the isolation safety barrier is damaged, it should be returned to the manufacturer for repair or replacement. When users perform maintenance on the isolation safety barrier, they must strictly follow the safety barrier maintenance guidelines and relevant technical standards, and it can only be put back into operation after thorough testing. 15. The isolation safety barrier shall be installed, used, and maintained in strict accordance with the relevant provisions of GB3836.15-2000 \"Electrical equipment for explosive gas environments – Part 15: Electrical installation in hazardous locations (except coal mines)\". Original address: yunrun.com.cn/tech/388.html