{"product_id":"honeywell-51305844-175-tdc-3000-low-level-input-multiplexer","title":"Honeywell 51305844-175 TDC 3000 Low Level Input Multiplexer","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell 51305844-175 operates as a high-density Low Level Input Multiplexer (LLMUX) board within the Honeywell TDC 3000 Distributed Control System (DCS) framework. This specialized hardware card handles microvolt and millivolt-level process variables, multiplexing dozens of delicate analog sensor inputs—such as thermocouples and RTD sensors—into a single controller field channel without signal degradation. We supply this mission-critical processor board exclusively in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% brand new, original factory-sealed condition\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto prevent loop drift and guarantee maximum data scanning resolution.\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\u003eParameter\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\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHoneywell\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e51305844-175\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLow Level Input Multiplexer (LLMUX)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSystem Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHoneywell TDC 3000 Distributed Control System\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUnited States (USA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30.5 cm x 11.9 cm x 7.0 cm (12.01\" x 4.69\" x 2.76\")\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.85 kg (1.87 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTarget Field Signals\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eThermocouples, RTDs, low-level mV analog inputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuppresses Thermal and Common-Mode Noise:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHigh-performance solid-state switches isolate individual low-level input paths, stripping out severe electromagnetic noise and ground loops before the signals reach the main A\/D converter.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaximizes Chassis Density:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe optimized 30.5 cm card profile permits deep vertical integration inside standard TDC 3000 I\/O files. This layout allows plant engineers to expand temperature loop tracking capacities without expanding cabinet real estate.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaintains Precise Cold-Junction Compensation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe board geometry accommodates heavy-duty terminal blocks directly, minimizing localized temperature gradients across terminal contacts to prevent reference junction errors in critical thermal processes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplifies Multi-Channel Field Commissioning:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStandardized card-guide mounting ears ensure exact terminal alignment when sliding the 0.85 kg module into live racks, reducing hardware configuration delays during scheduled turnarounds.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this multiplexer board support standard high-level 4-20mA loop signals?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 51305844-175 card features input operational amplifiers tuned specifically for low-level millivolt, thermocouple, or RTD signals. Routing a standard high-level 4-20mA or 1-5V loop directly into these channels will saturate the inputs and can cause permanent component damage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this an authentic, factory-fresh Honeywell part or clean surplus?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee that this item is 100% brand new, authentic, and completely unused stock. It includes original moisture-barrier bags, anti-static shielding, and all factory quality assurance seals intact.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat measures prevent signal cross-talk during rapid channel switching?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe board utilizes advanced break-before-make switching logic combined with low-leakage solid-state relays. This architecture discharges stray capacitance between channel transitions, eliminating data leakage between adjacent field inputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52895455412533,"sku":"51305829-400","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/51305844-175.png?v=1779084653","url":"https:\/\/www.5gplc.com\/products\/honeywell-51305844-175-tdc-3000-low-level-input-multiplexer","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}