{"product_id":"amm21-s3-yokogawa-thermocouple-input-multiplexer-module","title":"AMM21 S3 Yokogawa Thermocouple Input Multiplexer Module","description":"\u003ch2\u003eYokogawa AMM21 CENTUM VP\/CS 3000 Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for Specific Technical Task in CENTUM VP, CS 3000, STARDOM FCN\/FCJ controllers, the \u003cstrong\u003eYokogawa AMM21 S3\u003c\/strong\u003e (\u003cstrong\u003eAMM21\u003c\/strong\u003e Thermocouple Input Multiplexer Module) provides direct physical\/electrical execution. This dedicated hardware component acquires multiple thermocouple signals, executes analog-to-digital conversion, and executes deterministic data transmission to system controllers. The assembly integrates 16 distinct thermocouple input channels alongside localized analog-to-digital circuitry, providing direct processing of sub-millivolt temperature sensor potentials across the internal system bus architecture.\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\u003eAMM21 S3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12.7 cm x 2.5 cm x 20.3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0-55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e3.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16 thermocouple inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Thermocouples\u003c\/td\u003e\n\u003ctd\u003eK, J, T, E, N, B, R, S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16-bit A\/D conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1% FS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;=10 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Supply\u003c\/td\u003e\n\u003ctd\u003e24 V DC via I\/O base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eCE, RoHS, IEC 61010-1, IEC 61326-3-1\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 hardware incorporates automated cold junction compensation (CJC) directly at the terminal block level to negate the thermal EMF generated at the copper-to-thermocouple junction points. The micro-architecture relies on channel-to-bus and channel-to-ground isolation elements to block common-mode voltage spikes and suppress localized ground loops from interfering with the 16-bit A\/D conversion subsystem. Internal 50\/60 Hz noise filters remove induced AC frequency interference from the low-voltage sensor lines before the system multiplexer cycles the signals. This maintains physical loop stability and signal clarity under fluctuating plant environments where high-power electrical machinery creates localized electromagnetic fields.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the hot-swap restriction govern the replacement of this module during controller execution?\u003c\/p\u003e\n\u003cp\u003eA: Technicians can pull and replace the module while the I\/O base remains powered. The internal diagnostic subsystem handles live insertion parameters, but operators must ensure that the specific loop configurations match the firmware revision active on the backplane to prevent bus faults.\u003c\/p\u003e\n\u003cp\u003eQ: What action does the module execute if a field wire breaks on a thermocouple channel?\u003c\/p\u003e\n\u003cp\u003eA: The integrated diagnostics activate an open-circuit detection routine. The module transmits a specific out-of-range upscale or downscale diagnostic value across the system bus, signaling the controller to register an I\/O channel error state.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the I\/O base securely onto the structural frame using standard industrial layout criteria before sliding the module into its designated slot. Field thermocouple wiring requires dedicated twisted-pair extension cables matching the specific thermocouple chemistry in use. Route all low-level sensor cables through separate wire ducts away from high-voltage motor supply lines to reduce capacitive noise coupling. Connect the outer cable shields to the single-point instrument ground termination bar inside the enclosure. Ensure the internal ambient temperature within the cabinet remains below 55 deg C by providing adequate space for natural convection or mechanical air movement across the I\/O rack.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43684062560346,"sku":"AMM21","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/640..jpg?v=1784602039","url":"https:\/\/www.spareoil.com\/products\/amm21-s3-yokogawa-thermocouple-input-multiplexer-module","provider":"SpareOil Automation","version":"1.0","type":"link"}