{"product_id":"aat145-s03-yokogawa-analog-input-module-datasheet-technical-manual","title":"AAT145-S03 Yokogawa Analog Input Module Datasheet \u0026 Technical Manual","description":"\u003ch1\u003eYokogawa AAT145-S03 Thermocouple\/mV Input Module\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eYokogawa AAT145-S03\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAAT145-S03\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003einput module, operates as a dedicated hardware component for thermocouple and millivolt signal acquisition within Yokogawa distributed control system (DCS) I\/O architectures.\u003c\/p\u003e\n\u003ch3\u003eSuffixBreakdown\u0026amp;ModelMatrix\u003c\/h3\u003e\n\u003cp\u003eAAT145: 16-channel analog input thermocouple\/mV module\u003cbr\u003eS03: Hardware revision \/ configuration variant identifier (no further factory-disclosed segmentation provided in source data)\u003c\/p\u003e\n\u003ch3\u003eHardwareSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\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 AAT145-S03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan (Yokogawa manufacturing group)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.35 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperatingTemp\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowerConsumption\u003c\/td\u003e\n\u003ctd\u003e~500 mA at 5 VDC internal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16 isolated channels (15-channel mode with MTC\/TETC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Types\u003c\/td\u003e\n\u003ctd\u003eJIS thermocouples (R, J, K, E, T, B, S, N), -100 to 150 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e500 VAC channel-to-channel and module-to-ground (1 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCJC\u003c\/td\u003e\n\u003ctd\u003eBuilt-in cold junction compensation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eYokogawa Channel Isolation and CJC Processing Architecture\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eYokogawa AAT145-S03\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eimplements channel-to-channel galvanic separation at 500 VAC withstand level, reducing cross-channel electrical coupling during thermoelectric signal acquisition. Each thermocouple input is processed with integrated cold junction compensation (CJC), enabling direct conversion of junction voltage into compensated temperature data without external reference modules. The architecture aligns with Yokogawa DCS I\/O design rules where analog front-end isolation is maintained per channel group to stabilize measurement integrity under mixed signal load conditions.\u003c\/p\u003e\n\u003ch3\u003eFrequentlyAskedQuestions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the AAT145-S03 operate in mixed thermocouple and mV input configuration simultaneously?\u003cbr\u003eA: Yes. Each channel supports independent configuration for JIS thermocouple types or -100 to 150 mV input signals.\u003c\/p\u003e\n\u003cp\u003eQ: What is the isolation behavior between channels?\u003cbr\u003eA: The module provides 500 VAC isolation between channels and between module and ground for 1 minute withstand rating.\u003c\/p\u003e\n\u003cp\u003eQ: Is external cold junction compensation required?\u003cbr\u003eA: No. Cold junction compensation is internally implemented per channel.\u003c\/p\u003e\n\u003ch3\u003eFieldInstallationGuidelines\u003c\/h3\u003e\n\u003cp\u003eEnsure KS1 cable shielding is grounded at the designated system-side earth point only to prevent ground loop formation across thermocouple loops. Maintain separation between thermocouple wiring and power conductors to reduce induced voltage error on low-level mV inputs. For terminal board integration (MTC or TETC), verify connector seating alignment before applying backplane power. Cable conductor cross-section must remain within 0.5 to 2 mm2 without sleeve or 0.5 to 1.5 mm2 with DIN 46228 ferrules.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44143533097048,"sku":"AAT145-S03","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/AAT145-S03-2.jpg?v=1779766588","url":"https:\/\/www.industriaxplc.com\/products\/aat145-s03-yokogawa-analog-input-module-datasheet-technical-manual","provider":"IndustriaX Limited","version":"1.0","type":"link"}