{"product_id":"8965440000-weidmuller-act20x-2hai-2sao-s-hart-transparent-isolator","title":"8965440000 Weidmuller ACT20X-2HAI-2SAO-S HART Transparent Isolator","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-47\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003eWeidmuller 8965440000 (ACT20X-2HAI-2SAO-S)\u003c\/strong\u003e\u003cspan class=\"citation-47 citation-end-47\"\u003e\u003cspan\u003e \u003c\/span\u003eis a sophisticated 2-channel HART-protocol transparent current-supply isolator designed for hazardous area applications.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003ePart of the ACT20X series, this module provides signal isolation and conditioning for 4 to 20 mA loops while maintaining full transparency for bidirectional HART communication. Engineered for high-stakes environments such as chemical processing and offshore platforms, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8965440000\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eeffectively decouples field devices from the control system, eliminating ground loops and protecting sensitive DCS\/PLC inputs from high-voltage transients. Its primary value lies in its high accuracy (\u003cspan class=\"math-inline\"\u003e\u003c\/span\u003e\u0026lt; 0.1% Span) and integrated alarm functions, which proactively monitor for line interruptions and device errors to maximize process availability.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003eThe ACT20X-2HAI-2SAO-S is a dual-channel powerhouse housed in a slim 22.5 mm enclosure, saving significant DIN-rail space.\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-46 citation-end-46\"\u003eIt operates on a wide supply voltage range of 19.2 to 31.2 VDC and is fully configurable via FDT\/DTM software, allowing for precise adjustment of signal limits and alarm thresholds.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOne of its standout features is \"HART Transparency,\" which ensures that digital diagnostic data from smart transmitters can pass through the isolator without distortion.\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-45 citation-end-45\"\u003eThe module also features a dedicated relay alarm output for collective error messaging.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eIt monitors for four distinct fault conditions: signal limit violations, input line interruptions, supply voltage loss, and internal device errors. The screw connection system provides high mechanical stability, ensuring reliable electrical contact even in high-vibration industrial settings.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eACT20X-2HAI-2SAO-S (8965440000)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWeidmuller\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2-Channel (Isolated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput\/Output\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 to 20 mA (HART Transparent)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt; 0.1% of span\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eStep Response Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt;= 5 ms\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNominal Switching Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt;= 125 VAC \/ 110 VDC (Relay)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt;= 1.9 W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFDT\/DTM Software\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtection Degree\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP20\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-20 to 60 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e117.2 x 22.5 x 113.6 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.212 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What does \"HART Transparent\" mean for this isolator?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA1: It means the module does not strip away the high-frequency digital signal superimposed on the 4 to 20 mA analog loop. This allows your DCS or handheld communicator to \"see\" and configure smart field devices through the isolator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: How do the alarm functions improve plant safety?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA2: The module features a physical relay contact that opens or closes when a fault occurs (like a broken wire). This provides an immediate hardware-level notification to the safety system, independent of the analog signal value.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Can the ACT20X-2HAI-2SAO-S be installed directly in ATEX Zone 0?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA3: The module itself must be installed in a safe area or Zone 2, but it is designed to interface with intrinsic safety (IS) signals coming from Zone 0, 1, or 2. Always check the specific Ex-certification markings on the device housing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-44\"\u003e\u003c\/span\u003e\u003cstrong\u003eSoftware Configuration:\u003c\/strong\u003e\u003cspan class=\"citation-44 citation-end-44\"\u003e\u003cspan\u003e \u003c\/span\u003eUse the Weidmuller WI-Manager (FDT frame) and the specific DTM for ACT20X to set up the device.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eThis allows you to define \"Active\" or \"Passive\" input modes and configure the fail-safe behavior of the relay output.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAlthough the module is rated up to 60 deg C, maintain a 5 mm gap between adjacent high-power modules if the ambient temperature in the cabinet consistently exceeds 45 deg C. This prevents the internal \"Step response time\" from drifting due to thermal stress.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring and Termination:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor HART communication integrity, ensure that the total loop impedance (including the 250 Ohm resistor) does not exceed the module's driving capability. Use shielded twisted-pair cables for the 4 to 20 mA loops to maintain the \u0026lt; 0.1% accuracy in high EMI environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-43 citation-end-43\"\u003eThe ACT20X-2HAI-2SAO-S is distinguished by its extremely low temperature coefficient (\u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e\u0026lt; 0.01% \u003c\/span\u003e\u003cspan class=\"citation-42 citation-end-42\"\u003eof span per deg C), ensuring that signal measurements remain precise regardless of seasonal temperature swings in the control room.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-41 citation-end-41\"\u003eIts rapid 5 ms response time makes it suitable for fast-acting control loops and safety-instrumented systems (SIS).\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eFurthermore, the 2-channel design provides a 50% reduction in DIN-rail footprint compared to standard single-channel isolators, making it the ideal choice for high-density marshalling cabinets in modernized plant architectures.\u003c\/p\u003e","brand":"Weidmuller","offers":[{"title":"Default Title","offer_id":53102138589547,"sku":"ACT20X-2HAI-2SAO-S","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/8965440000-ngibj2i2kgn.png?v=1776137163","url":"https:\/\/www.plcprotech.com\/products\/8965440000-weidmuller-act20x-2hai-2sao-s-hart-transparent-isolator","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}