{"product_id":"amm22t-yokogawa-thermocouple-input-multiplexer","title":"AMM22T YOKOGAWA Thermocouple Input Multiplexer","description":"\u003ch2\u003eYOKOGAWA AMM22T Thermocouple Input Multiplexer Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA AMM22T\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAMM22T\u003c\/strong\u003e Thermocouple Input Multiplexer Module, operates as a dedicated hardware component for multi-channel thermal data acquisition and signal conditioning within Centum CS and Centum VP systems. This module provides direct electrical interface for various thermocouple types, facilitating high-density temperature monitoring while minimizing external wiring requirements through internal signal multiplexing.\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\u003eAMM22T\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\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e5.1 cm x 7.6 cm x 22.9 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Types\u003c\/td\u003e\n\u003ctd\u003eJ, K, T, E, R, S, B, N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e100 MOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Range\u003c\/td\u003e\n\u003ctd\u003e0 to 20 mA or 4 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDCS Process Control \u0026amp; Cold Junction Compensation\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAMM22T\u003c\/strong\u003e incorporates localized Cold Junction Compensation (CJC) circuitry to maintain measurement precision despite fluctuations in panel ambient temperatures. To ensure signal integrity, the module maintains a Common Mode Rejection Ratio (CMRR) exceeding 60 dB, which mitigates electrical noise interference common in high-density industrial control environments. The hardware supports configurable output scaling (0-20 mA or 4-20 mA) and provides discrete disconnection detection features, allowing for accurate fault monitoring within the process control loop.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does this module support parallel input connections from a single thermocouple to multiple I\/O channels?\u003c\/p\u003e\n\u003cp\u003eA: No. Parallel input connections are not permitted as they introduce impedance mismatching and common-mode noise, which compromise the measurement accuracy of the multiplexer.\u003c\/p\u003e\n\u003cp\u003eQ: How should the disconnection detection feature be configured for optimal safety?\u003c\/p\u003e\n\u003cp\u003eA: Disconnection detection should be set based on the specific application safety requirements (UP\/DOWN\/OFF). If a thermocouple break must trigger a defined safety state in the controller, ensure the logic configuration is aligned with the specific hardware burnout detection setting.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the module is mounted firmly within the designated I\/O nest using the M4 screw terminals to guarantee stable ground contact.\u003c\/li\u003e\n\u003cli\u003eTerminate thermocouple leads directly to the module input terminals; avoid splicing or utilizing intermediate terminal blocks where possible to prevent thermoelectric EMF errors at the connections.\u003c\/li\u003e\n\u003cli\u003eVerify that the shield drain wire of the thermocouple cable is grounded at the DCS cabinet earth bus bar to maintain the 60 dB CMRR performance.\u003c\/li\u003e\n\u003cli\u003eConfirm the 24 V DC power supply is stable and free from significant ripple before finalizing the system start-up.\u003c\/li\u003e\n\u003cli\u003eCalibrate the module after initial installation, particularly if the operating environment ambient temperature deviates from the baseline, to compensate for any initial thermal offsets.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43624193097818,"sku":"AMM22T","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/483._c850f418-a4e1-4d04-8ac0-7c3632f4febf.jpg?v=1783581411","url":"https:\/\/www.spareoil.com\/es\/products\/amm22t-yokogawa-thermocouple-input-multiplexer","provider":"SpareOil Automation","version":"1.0","type":"link"}