{"product_id":"honeywell-51309223-125-low-level-analog-input-multiplexer","title":"Honeywell 51309223-125 Low Level Analog Input Multiplexer","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 51309223-125\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e51309223\u003c\/strong\u003e Low Level Analog Input Multiplexer, operates as a dedicated hardware component for multi-channel thermocouple and RTD signal conditioning within Honeywell Experion Process Knowledge System (PKS) and High-Performance Process Manager (HPM) platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e51309223-125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003e51309223\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Type\u003c\/td\u003e\n\u003ctd\u003eLLMUX TC\/RTD Field Termination Assembly (FTA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Code\u003c\/td\u003e\n\u003ctd\u003eMU-TAMT03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Capacity\u003c\/td\u003e\n\u003ctd\u003e16 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCold Junction Reference\u003c\/td\u003e\n\u003ctd\u003eLocal CJR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.0 kg (shipping weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard chassis FTA dimensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC enclosure loop power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eCold Junction Compensation and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe 51309223-125 multiplexer assembly incorporates local cold junction compensation (CJC) to stabilize millivolt signals originating from field-mounted thermocouples and RTD sensors. Channel-to-channel isolation safeguards the primary analog conditioning circuitry against common-mode voltage spikes and ground potential differentials across field wiring runs. The board interfaces with 4-20 mA HART loop protocol subsystem networks and high-density process controllers, maintaining analog-to-digital measurement accuracy across all 16 dedicated input channels without cross-talk signal degradation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 51309223-125 multiplexer support hot-swapping during active system operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the Field Termination Assembly (FTA) design allows module insertion and removal without disrupting adjacent I\/O channels or cabinet backplane communications, provided field power isolation procedures are maintained.\u003c\/p\u003e\n\u003cp\u003eQ: How is cold junction compensation handled on the 51309223-125 module?\u003c\/p\u003e\n\u003cp\u003eA: Thermocouple reference junction measurement is performed locally via integrated CJR sensors located directly on the terminal block assembly.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding:\u003c\/strong\u003e Connect field thermocouple and RTD cable shields to the cabinet instrument earth bus at a single point to prevent ground loop currents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Wiring Clearance:\u003c\/strong\u003e Route low-level millivolt input signal lines through dedicated wire ducts separated from AC power cables and digital output switching circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCJR Sensor Maintenance:\u003c\/strong\u003e Ensure local CJR thermal sensors on the board remain unobstructed by cabling to maintain accurate ambient temperature tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Torque Limits:\u003c\/strong\u003e Tighten mounting chassis screws evenly to ensure frame ground continuity and mechanical stability under industrial vibration conditions.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53583418196277,"sku":"51309223-125","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/51309223-125_Cocoai.png?v=1789451116","url":"https:\/\/www.5gplc.com\/products\/honeywell-51309223-125-low-level-analog-input-multiplexer","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}