{"product_id":"amm25c-yokogawa-thermocouple-multiplexer-module-for-centum-cs-vp","title":"AMM25C | Yokogawa Thermocouple Multiplexer Module for CENTUM CS\/VP","description":"\u003cp\u003eThe Yokogawa\u003cstrong\u003e AMM25C\u003c\/strong\u003e is a specialized mV input multiplexer module engineered for the CENTUM CS and CENTUM VP distributed control systems. It addresses the specific challenge of high-density temperature monitoring by supporting up to 15 thermocouple input channels within a single unit. By integrating a Reference Junction Compensation (RJC) interface, this module ensures precise temperature readings, compensating for ambient temperature fluctuations at the connection point. It is the ideal solution for process industries requiring reliable, isolated signal acquisition for thermocouples and low-voltage DC signals without the complexity of external conditioning hardware.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe AMM25C combines high-precision analog-to-digital conversion with robust isolation features suitable for industrial environments.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth align=\"left\"\u003eParameter\u003c\/th\u003e\n\u003cth align=\"left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003emV Input Multiplexer with Thermocouple Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eAMM25C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eCompatible Systems\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eCENTUM CS, CENTUM VP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e15 Points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eInput Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eThermocouple (with RJC), mV DC, DC Voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eInput Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e-100 to 100 mV DC; -10 to 10 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e±40 µV (mV input); ±80 µV (per 10°C ambient change)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eBurnout Detection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eSelectable (UP \/ DOWN \/ OFF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eSignal Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eYes (Input Isolated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eConnector Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eRJC (Reference Junction Compensation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e2.5 cm (H) x 22.9 cm (W) x 7.6 cm (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eModel Code Interpretation\u003c\/h3\u003e\n\u003cp\u003eFor Yokogawa modules, the suffix code is critical as it defines the physical interface (connector vs. terminal) and the specific channel configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAMM25C\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAMM25-AXX\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eA (Suffix -C):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIndicates the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eConnector Type\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e-C\u003c\/strong\u003e: Denotes that this module uses a connector interface (typically a 15-point connector) rather than a screw terminal block. This requires a specific mating connector or cable assembly (such as the KS1 cable) for field wiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cem\u003eNote: This is distinct from the \"T\" (Terminal) version, which would have direct screw terminals.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Always verify the physical interface (Connector vs. Terminal) before purchasing to ensure it matches your existing cabling or carrier setup.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eInstallation and Wiring Guidelines\u003c\/h3\u003e\n\u003cp\u003eTo ensure accurate temperature measurement and system stability, follow these installation practices:\u003c\/p\u003e\n\u003col class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCarrier Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe AMM25C is designed to be installed in specific I\/O carrier boxes (such as the AMN32). Ensure the module is fully inserted into the slot and the locking mechanism is engaged.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRJC Connection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module features a specific Reference Junction Compensation (RJC) port. You must connect the RJC sensor (usually a thermistor or diode sensor provided with the system) to this port. This allows the module to measure the temperature at the cold junction and mathematically compensate the thermocouple reading for high accuracy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCable Connection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSince this is a connector type (-C), use the designated KS1 cable or mating connector. Ensure the cable is securely fastened to the module face to prevent signal interruption due to vibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBurnout Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConfigure the burnout detection direction (UP, DOWN, or OFF) via the system engineering software. This ensures that if a thermocouple wire breaks, the system registers a safe failure state rather than a random temperature reading.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrounding:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhile the inputs are isolated, proper grounding of the control cabinet and the cable shield is recommended to minimize electromagnetic interference (EMI).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the function of the RJC port on the AMM25C?\u003c\/strong\u003eA: The RJC (Reference Junction Compensation) port connects to a sensor that measures the temperature at the module's terminal block. This is critical for thermocouple accuracy, as it compensates for the difference between the process temperature and the connection point temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many channels does the AMM25C support?\u003c\/strong\u003eA: The AMM25C supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e15 input points\u003c\/strong\u003e, allowing for high-density monitoring of temperature or low-voltage signals in a single module slot.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this module handle standard voltage inputs?\u003c\/strong\u003eA: Yes, in addition to thermocouples and mV signals, the AMM25C supports DC voltage inputs ranging from -10 V to +10 V, making it versatile for various analog signal types.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the AMM25C compatible with CENTUM VP?\u003c\/strong\u003eA: Yes, it is fully compatible with both CENTUM CS and the newer CENTUM VP systems, facilitating seamless system upgrades and maintenance.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52522735960373,"sku":"AMM25C","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/AMM25C.png?v=1775034021","url":"https:\/\/www.5gplc.com\/products\/amm25c-yokogawa-thermocouple-multiplexer-module-for-centum-cs-vp","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}