{"product_id":"emerson-kj3002x1-bg2-12p1731x082-thermocouple-module","title":"EMERSON KJ3002X1-BG2 12P1731X082 Thermocouple Module","description":"\u003cp\u003eThe \u003cstrong\u003eEMERSON VE4003S5B1 KJ3002X1-BG2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eKJ3002X1-BG2\u003c\/strong\u003e (12P1731X082) Thermocouple Input Module, operates as a dedicated hardware component for temperature sensor signal processing and cold junction voltage acquisition within DeltaV DCS 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\u003eVE4003S5B1 KJ3002X1-BG2 (12P1731X082)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEMERSON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.20 kg (0.44 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e8.1 x 7.9 x 8.8 cm (3.19 x 3.11 x 3.46 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLocalBus powered via carrier backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eThermocouple Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Orientation\u003c\/td\u003e\n\u003ctd\u003eVertical or horizontal on DeltaV I\/O carrier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel-to-Channel Isolation\u003c\/td\u003e\n\u003ctd\u003eGalvanically isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eCold Junction Compensation (CJC) and Process Control Loop Execution\u003c\/h3\u003e\n\u003cp\u003eThe EMERSON VE4003S5B1 KJ3002X1-BG2 module conditions millivolt-level signals generated by field-installed thermocouple sensors and converts them into digital process variables across the DeltaV LocalBus backplane. The internal analog front-end incorporates precise cold junction compensation (CJC) algorithms to adjust for terminal block temperature gradients. Coupled with high-density channel-to-channel isolation, the card prevents ground loop interference from compromising analog-to-digital conversion precision, ensuring stable temperature loop execution for critical DCS control strategies.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module handle cold junction compensation (CJC) across varying ambient panel temperatures?\u003c\/p\u003e\n\u003cp\u003eA: Cold junction compensation is performed utilizing temperature sensors integrated within the terminal block assembly, enabling the card's internal signal processor to dynamically offset ambient temperature changes at the copper-thermocouple wire junction.\u003c\/p\u003e\n\u003cp\u003eQ: Can this thermocouple card be hot-swapped while the local DeltaV carrier is energized?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The card supports Removal and Insertion Under Power (RIUP), allowing field service personnel to replace a module without interrupting backplane power or communication on adjacent I\/O slots.\u003c\/p\u003e\n\u003cp\u003eQ: What mechanisms protect the thermocouple input channels against field wiring noise?\u003c\/p\u003e\n\u003cp\u003eA: Individual channels feature galvanic isolation and common-mode rejection filtering to eliminate high-frequency electromagnetic noise and prevent stray ground currents from affecting loop measurement accuracy.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eBackplane Mounting: Align the module frame with the designated slot on the DeltaV 2-wide or 8-wide carrier base. Push the unit straight onto the LocalBus connector until the top and bottom retention latches snap securely into place.\u003c\/li\u003e\n\u003cli\u003eThermocouple Wiring Precautions: Use matching thermocouple extension wires from the field sensor to the terminal block. Avoid using copper wire bridging, which introduces spurious EMF junctions and invalidates CJC reference calculations.\u003c\/li\u003e\n\u003cli\u003eCable Shield Management: Connect individual or overall cable shields to the carrier ground bar at a single point to prevent circulating shield current loops from distorting low-millivolt input signals.\u003c\/li\u003e\n\u003cli\u003eConduits and Wiring Segregation: Route thermocouple leads through grounded metal conduits or separate wiring ducts, keeping at least 300 mm clearance from AC power wiring, motor leads, and switching inductive loads.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":45460136165491,"sku":"KJ3002X1-BG2 12P1731X082","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/KJ3243X1-BA1_2__Cocoai_28298c03-d89f-4cea-86e4-917c7e9b4be1.jpg?v=1788836247","url":"https:\/\/www.dcssupplier.com\/ar\/products\/emerson-kj3002x1-bg2-12p1731x082-thermocouple-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}