{"id":9365,"date":"2025-11-21T04:25:39","date_gmt":"2025-11-21T04:25:39","guid":{"rendered":"https:\/\/vntechgroup.com.vn\/?p=9365"},"modified":"2025-11-21T04:25:39","modified_gmt":"2025-11-21T04:25:39","slug":"i-s-barriers-the-leading-intrinsic-safety-isolation-solution-from-pr-electronics","status":"publish","type":"post","link":"https:\/\/vntechgroup.com.vn\/en\/i-s-barriers-the-leading-intrinsic-safety-isolation-solution-from-pr-electronics\/","title":{"rendered":"I.S. Barriers \u2013 The Leading Intrinsic Safety Isolation Solution from PR electronics"},"content":{"rendered":"

What Are I.S. Barriers and Why Are They Needed in Hazardous Environments?<\/strong><\/h1>\n

\"\"<\/p>\n

In industries such as chemicals, oil & gas, gas processing, storage facilities, and many other applications that involve hazardous areas<\/strong>, the risk of ignition or heat generation can potentially lead to explosions.
I.S. Barriers (Intrinsic Safety Barriers)<\/strong> act as a protective wall, ensuring that signals from field devices are safely and reliably transmitted back to the control room without creating any ignition risks.<\/p>\n

Comparison: Traditional Zener Barriers vs. Modern Galvanic Isolators<\/strong><\/h2>\n

Zener Barriers \u2013 An Older Solution with Many Limitations<\/strong><\/h3>\n

Zener Barriers function by:<\/p>\n

    \n
  • \n

    Using resistors to limit the current entering the hazardous area<\/p>\n<\/li>\n

  • \n

    Using Zener diodes to divert excess voltage\/current to ground during a fault<\/p>\n<\/li>\n

  • \n

    Using a fuse to protect Zener diodes during overload conditions<\/p>\n<\/li>\n<\/ul>\n

    Major drawbacks:<\/strong><\/p>\n

      \n
    • \n

      Requires a dedicated I.S. grounding system \u2014 complex and costly<\/p>\n<\/li>\n

    • \n

      Voltage drop, resulting in reduced power available to field devices<\/p>\n<\/li>\n

    • \n

      Installation limitations \u2014 must be mounted close to the grounding point<\/p>\n<\/li>\n

    • \n

      Safety risks if the grounding connection fails<\/p>\n<\/li>\n<\/ul>\n

      \"\"<\/p>\n

      Galvanic Isolators \u2013 Advanced Isolation Technology<\/strong><\/h3>\n

      Using transformers and opto-isolators, Galvanic Isolators create full galvanic isolation between:<\/p>\n

        \n
      • \n

        Input<\/p>\n<\/li>\n

      • \n

        Output<\/p>\n<\/li>\n

      • \n

        Power supply<\/p>\n<\/li>\n<\/ul>\n

        Outstanding advantages:<\/strong><\/p>\n

          \n
        • \n

          No special grounding required \u2192 reduces installation cost<\/p>\n<\/li>\n

        • \n

          Zero maintenance throughout product life<\/p>\n<\/li>\n

        • \n

          Excellent noise immunity, eliminates ground loops<\/p>\n<\/li>\n

        • \n

          High signal accuracy<\/p>\n<\/li>\n

        • \n

          Certified SIL2\/SIL3 according to IEC 61508 \/ IEC 61511<\/p>\n<\/li>\n<\/ul>\n

          \"\"<\/p>\n

          SIL2\/SIL3 \u2013 Safety Integrity Levels Explained<\/strong><\/h2>\n

          Different types of risks originate from plants or plant components. As risks increase, the requirements for the Safety-Related System (SRS) also increase.
          IEC 61508 and IEC 61511 define four Safety Integrity Levels (SIL), indicating how much risk reduction a system can provide. The higher the SIL level, the greater the risk reduction.<\/p>\n

            \n
          • \n

            SIL1 \u2014 Basic protection<\/strong><\/p>\n<\/li>\n

          • \n

            SIL2 \u2014 High level of safety<\/strong><\/p>\n<\/li>\n

          • \n

            SIL3 \u2014 Very high level of protection<\/strong><\/p>\n<\/li>\n

          • \n

            SIL4 \u2014 Extremely stringent safety level<\/strong><\/p>\n<\/li>\n<\/ul>\n

            PR electronics\u2019 I.S. Barriers are certified SIL2\/3 using the Full Assessment method<\/strong>, not the Proven-in-use method, offering:<\/p>\n

              \n
            • \n

              Longer Proof Test Intervals<\/p>\n<\/li>\n

            • \n

              Higher system reliability<\/p>\n<\/li>\n

            • \n

              Better internal diagnostics<\/p>\n<\/li>\n<\/ul>\n

              \"\"<\/p>\n

              Why Choose I.S. Barriers from PR electronics?<\/strong><\/h2>\n

              As a leading manufacturer of intrinsic safety isolation devices, PR electronics not only complies with global safety standards but also sets stricter internal requirements:<\/p>\n

                \n
              • \n

                All devices are based on Galvanic Isolation<\/strong>, not Zener Barrier design<\/p>\n<\/li>\n

              • \n

                SIL2\/3 certification under IEC 61508 Full Assessment<\/strong>, integrating safety throughout the entire product lifecycle<\/p>\n<\/li>\n

              • \n

                Higher reliability with extended Proof Test Intervals<\/p>\n<\/li>\n

              • \n

                Superior internal diagnostics compared to Proven-in-use certified products<\/p>\n<\/li>\n

              • \n

                Global approvals: ATEX, IECEx, FM, UL, CSA, GOST<\/strong><\/p>\n<\/li>\n<\/ul>\n

                \"\"<\/p>\n

                Superior Performance Features<\/strong><\/h2>\n
                  \n
                • \n

                  Wide application range:<\/strong> The 9000 and 5000 series offer isolation solutions for all signal types \u2014 analog, digital, HART\u00ae, pulse, and universal inputs<\/p>\n<\/li>\n

                • \n

                  Easy configuration:<\/strong> Supports a wide supply range from 24V AC\/DC to 220V AC\/DC, configurable via PC or detachable display<\/p>\n<\/li>\n

                • \n

                  High accuracy:<\/strong> Series 5000 provides measurement precision below 0.1%<\/strong><\/p>\n<\/li>\n

                • \n

                  High galvanic isolation (up to 3.75 kVAC)<\/strong> and exceptional EMC immunity<\/p>\n<\/li>\n<\/ul>\n

                  Key I.S. Barrier Products from PR electronics<\/strong><\/h2>\n

                  \"\"<\/p>\n

                  HART Repeater \u2013 9106B \/ 5106B<\/strong><\/h3>\n
                    \n
                  • \n

                    Isolates HART communication<\/p>\n<\/li>\n

                  • \n

                    Powers HART field devices in hazardous areas<\/p>\n<\/li>\n<\/ul>\n

                    \"\"<\/p>\n

                    Universal Converter \u2013 9116B<\/strong><\/h3>\n
                      \n
                    • \n

                      Supports RTD, Thermocouple, mV, Ohm, Voltage inputs<\/p>\n<\/li>\n

                    • \n

                      Converts to standard analog output signals<\/p>\n<\/li>\n<\/ul>\n

                      \"\"<\/p>\n

                      Pulse Isolator \u2013 9202B \/ 5202B<\/strong><\/h3>\n
                        \n
                      • \n

                        Ideal for NAMUR sensors, flow counters, and switches<\/p>\n<\/li>\n

                      • \n

                        Ensures safe and isolated pulse transmission<\/p>\n<\/li>\n<\/ul>\n

                        \"\"<\/p>\n

                        I.S. Barriers \u2013 The Optimal Safety Solution for Modern Industrial Plants<\/strong><\/h2>\n

                        Given the stringent requirements of explosion protection, PR electronics’ I.S. Barriers deliver:<\/p>\n

                          \n
                        • \n

                          Maximum safety (SIL2\/3 \u2013 Full Assessment)<\/p>\n<\/li>\n

                        • \n

                          High signal accuracy<\/p>\n<\/li>\n

                        • \n

                          Zero maintenance<\/p>\n<\/li>\n

                        • \n

                          Full certified global compliance<\/p>\n<\/li>\n

                        • \n

                          Reduced installation costs (no I.S. grounding required)<\/p>\n<\/li>\n<\/ul>\n

                          These are the leading choices for oil & gas, chemical plants, pharmaceuticals, energy, and industries requiring high-level safety.<\/p>\n

                          Conclusion \u2013 Contact Us for Consultation and Pricing<\/strong><\/h2>\n

                          We are the official representative of PR electronics in Vietnam, providing technical support, installation guidance, and genuine warranty services.<\/p>\n

                          For more detailed technical information, please visit PR electronics\u2019 official website or contact our authorized distributor.<\/p>\n

                          Vntech Group JSC<\/strong> is the exclusive distributor of PR electronics (Denmark) and other high-end industrial and automation products from Europe.
                          We are committed to delivering the best solutions and ensuring customer satisfaction.<\/p>\n

                          \"B\u1ed9<\/p>\n

                          Contact us today for optimal support and competitive pricing.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

                          What Are I.S. Barriers and Why Are They Needed in Hazardous Environments? In industries such as chemicals, oil & gas, gas processing, storage facilities, and many other applications that involve hazardous areas, the risk of ignition or heat generation can potentially lead to explosions.I.S. Barriers (Intrinsic Safety Barriers) act as a protective wall, ensuring that<\/p>\n","protected":false},"author":8,"featured_media":9366,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[209],"tags":[],"class_list":["post-9365","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solutions"],"acf":[],"yoast_head":"\nI.S. 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