{"product_id":"allen-bradley-1794-it8-flex-i-o-thermocouple-input-8-ch","title":"Allen-Bradley 1794-IT8 | Flex I\/O Thermocouple Input 8-Ch","description":"\u003ch2 style=\"color: #0055A4;\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #0055A4;\"\u003eAllen-Bradley 1794-IT8\u003c\/strong\u003e is an 8-channel Thermocouple\/mV Analog Input Module for the Flex I\/O system. It supports thermocouple types J, K, E, R, N, S, B, C, T, and L, plus ±76.5mV signals. With 16-bit resolution and 2.384 microvolt typical accuracy, it delivers precise temperature measurement in industrial applications.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #0055A4;\"\u003eCore Functionality\u003c\/h2\u003e\n\u003cp\u003eThe 1794-IT8 interfaces directly with grounded or ungrounded thermocouples and millivolt transducers. It communicates with PLCs via block transfer programming, moving configuration words and input data between the module and the PLC data table. Two cold-junction compensators mount on the terminal base for accurate reference. The module requires key switch Position 3 on the terminal base for safe mounting.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #0055A4;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; font-size:14px;\"\u003e\n  \u003ctr style=\"background:#f2f2f2;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eValue\u003c\/strong\u003e\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePart Number\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1794-IT8\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSeries\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFlex I\/O\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eModule Type\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eThermocouple\/mV Input Module\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eInputs\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e8 channels\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eThermocouple Types\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eJ, K, E, R, N, S, B, C, T, L\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMillivolt Range\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e±76.5 mV\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eResolution\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e16-bit (2.384 µV typical)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eData Format\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e16-bit 2's complement or offset binary\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eIsolation Voltage\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e850V DC\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eNormal Mode Rejection\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e-60 dB at 60 Hz\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCommon Mode Rejection\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e-115 dB at 60 Hz \/ -100 dB at 50 Hz\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eChannel Bandwidth\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0 to 2.62 Hz\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSystem Throughput\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e325 ms\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFlexbus Current\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e20 mA\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePower Dissipation\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e3W max @ 31.2V\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eThermal Dissipation\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e10.2 BTU\/hr @ 31.2V DC max\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eTerminal Base\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1794-TB2, -TB3, -TB3T\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eKeyswitch Position\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e3\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCJC Unit Part Number\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e969424-0\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eWeight\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eApprox. 0.25 kg (0.55 lbs)\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2 style=\"color: #0055A4;\"\u003eInstallation Guide\u003c\/h2\u003e\n\u003cp\u003eRotate the terminal base keyswitch to Position 3 before inserting the 1794-IT8. Mount the two cold-junction compensators (969424-0) in their designated positions on the terminal base. Connect thermocouple or millivolt wiring, observing polarity for ±76.5mV inputs. Configure the module via block transfer programming in the PLC. Ensure 24V DC supply is connected. Supports both grounded and ungrounded thermocouples.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #0055A4;\"\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThis module supports 10 thermocouple types plus millivolt inputs for maximum application flexibility. 16-bit resolution with 2.384µV typical accuracy ensures precise temperature measurement. -115dB common mode rejection at 60Hz provides excellent noise immunity. 850V DC isolation protects the backplane. The dual cold-junction compensators maintain accurate reference compensation.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #0055A4;\"\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Supported thermocouple types and range?\u003c\/strong\u003e\u003cbr\u003e\nA1: J, K, E, R, N, S, B, C, T, L plus ±76.5mV. Type B: 300-1800°C, Type K: -230 to 1372°C, Type J: -195 to 1200°C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: What terminal base and keyswitch position?\u003c\/strong\u003e\u003cbr\u003e\nA2: Compatible with 1794-TB2, -TB3, -TB3T terminal bases. Keyswitch must be in Position 3 for safe mounting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Resolution and isolation specs?\u003c\/strong\u003e\u003cbr\u003e\nA3: 16-bit resolution (2.384µV typical). 850V DC isolation. Throughput 325ms. Flexbus current 20mA.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":67679479070852,"sku":"1794-IT8","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/1794-IT8.jpg?v=1792227085","url":"https:\/\/www.etowonauto.com\/de\/products\/allen-bradley-1794-it8-flex-i-o-thermocouple-input-8-ch","provider":"Etowon Auto","version":"1.0","type":"link"}