{"product_id":"amm25c-yokogawa-analog-input-multiplexer-module","title":"AMM25C Yokogawa Analog Input Multiplexer Module","description":"\u003ch2\u003eYokogawa AMM25C Analog Input Multiplexer Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for multi-channel mV and thermocouple signal acquisition in CENTUM CS and CENTUM VP systems, the \u003cstrong\u003eYokogawa AMM25C\u003c\/strong\u003e (\u003cstrong\u003eAMM25C\u003c\/strong\u003e Analog Input Multiplexer Module) provides direct physical\/electrical execution. The module multiplexes low-level DC voltage and thermocouple inputs through isolated acquisition paths with reference junction compensation (RJC) support, enabling structured signal conditioning for distributed I\/O architectures. Channel isolation and burnout detection logic are implemented at hardware level.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eAMM25C: Fixed model designation for mV input multiplexer module\u003cbr\u003eNo additional suffix variants or ordering extensions specified in provided data.\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\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModelBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa AMM25C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan (Yokogawa Electric Corporation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e2.5 cm x 22.9 cm x 7.6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperatingTemp\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowerConsumption\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e15 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Types\u003c\/td\u003e\n\u003ctd\u003eDC voltage, mV DC, thermocouple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e-10 VDC to 10 VDC, -100 mVDC to 100 mVDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±40 uV (mV input), ±80 uV\/10 degC ambient change\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eInput channel isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBurnout Detection\u003c\/td\u003e\n\u003ctd\u003eUP \/ DOWN \/ OFF selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eCENTUM CS, CENTUM VP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eYokogawa Cold Junction Compensation \u0026amp; Channel Isolation Architecture\u003c\/h3\u003e\n\u003cp\u003eThe AMM25C implements cold junction compensation (CJC) via dedicated RJC input interface to stabilize thermocouple reference junction drift under varying terminal block temperature conditions. Channel-to-channel electrical isolation is used to reduce cross-interference between multiplexed low-level analog signals. In CENTUM VP integration, the module supports deterministic scan acquisition aligned with DCS backplane scheduling, maintaining stable sampling integrity across mixed mV and thermocouple input configurations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the AMM25C handle simultaneous thermocouple and mV DC inputs?\u003cbr\u003eA: Yes. Input multiplexing hardware supports mixed signal types across 15 input channels with shared acquisition timing.\u003c\/p\u003e\n\u003cp\u003eQ: Does the module perform cold junction compensation internally?\u003cbr\u003eA: It supports RJC-based reference junction compensation through its dedicated input port.\u003c\/p\u003e\n\u003cp\u003eQ: What happens on thermocouple burnout detection?\u003cbr\u003eA: The module allows selectable burnout behavior: UP, DOWN, or OFF at hardware configuration level.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the AMM25C module into standard I\/O nest assembly using S1 terminal block configuration. Secure installation using M4 screws with KS1 cable connection system. Maintain separation between thermocouple input wiring and high-voltage conductors to reduce thermoelectric noise coupling. Ensure shield termination is grounded at single-point earth reference to avoid ground loop formation in low-mV signal paths. Verify correct RJC sensor placement before system energization to maintain valid cold junction reference.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44148184121432,"sku":"AMM25C","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/AMM25C.jpg?v=1779875233","url":"https:\/\/www.industriaxplc.com\/products\/amm25c-yokogawa-analog-input-multiplexer-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}