{"product_id":"allen-bradley-1794-it8-flex-i-o-8-channel-thermocouple-input-module","title":"Allen-Bradley 1794-IT8 FLEX I\/O 8-Channel Thermocouple Input Module","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1794-IT8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehigh-resolution thermocouple and millivolt input module\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFLEX I\/O platform\u003c\/strong\u003e. It provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eeight independently configurable differential input channels\u003c\/strong\u003e, supporting a wide range of thermocouple types as well as direct millivolt signals for precise temperature measurement.\u003c\/p\u003e\n\u003cp\u003eUsing a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e16-bit A\/D converter\u003c\/strong\u003e, the 1794-IT8 delivers high accuracy for critical thermal monitoring. Integrated\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecold junction compensation (CJC)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupport and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eopen-wire detection\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eensure reliable data acquisition, even in harsh industrial environments. Its modular FLEX I\/O design allows I\/O to be installed close to field sensors, reducing wiring complexity, cabinet space, and installation costs.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1794-IT8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 differential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupported Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermocouple or millivolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Input Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e−76.5 mV to +76.5 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16-bit (≈ 2.384 μV\/LSB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Formats\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16-bit 2’s complement or Offset Binary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannel Bandwidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 2.62 Hz (−3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e850 V DC (1 s, inputs\/user power to logic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlexbus Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMax. 3.0 W @ 31.2 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMax. 10.2 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStatus Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Red\/Green LED (Power \u0026amp; Health)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Terminal Bases\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1794-TB2, 1794-TB3, 1794-TB3T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W × H × D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45.7 × 94.0 × 53.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProcess Temperature Monitoring\u003c\/strong\u003e\u003cbr\u003eAccurate sensing in reactors, furnaces, kilns, and heat exchangers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSkid-Mounted Systems\u003c\/strong\u003e\u003cbr\u003eDistributed temperature inputs close to sensors using FLEX I\/O.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnergy \u0026amp; Utilities\u003c\/strong\u003e\u003cbr\u003eBoiler, turbine, and exhaust temperature monitoring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOEM Equipment\u003c\/strong\u003e\u003cbr\u003eCompact, high-density temperature acquisition in packaged machinery.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the 1794-IT8 require a separate CJC sensor?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Accurate thermocouple measurement requires a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCJC-enabled terminal base\u003c\/strong\u003e, such as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1794-TB3T\u003c\/strong\u003e, to compensate for ambient connection temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What happens if a thermocouple wire breaks?\u003c\/strong\u003e\u003cbr\u003eA: The module provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eopen-circuit detection\u003c\/strong\u003e. When a break is detected, the channel drives to a predefined fault value (typically full scale) to alert the controller.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can different thermocouple types be mixed on one module?\u003c\/strong\u003e\u003cbr\u003eA: Yes.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEach channel is independently configurable\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein the controller software for its specific thermocouple type or millivolt range.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":52524437635256,"sku":"1794-IT8","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1794-IT8.jpg?v=1770084425","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1794-it8-flex-i-o-8-channel-thermocouple-input-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}