{"product_id":"1756-irt8i-allen-bradley-controllogix-8-channel-isolated-rtdthermocouplemv-input-module","title":"1756-IRT8I | Allen-Bradley ControlLogix 8-Channel Isolated RTD\/Thermocouple\/mV Input Module","description":"\u003ch4\u003eDescription\u003c\/h4\u003e\n\u003cp\u003eThe Allen-Bradley 1756-IRT8I is a high-resolution analog input module designed for temperature and low-level signal measurement in ControlLogix systems. Equipped with eight individually isolated channels, it supports RTD, thermocouple, and millivolt input types with 24-bit conversion for precise data acquisition. The 1756-IRT8I offers multiple sensor compatibility, advanced diagnostics, and flexible configuration options for demanding process monitoring applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1756-IRT8I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRTD \/ Thermocouple \/ Millivolt Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRTD, Thermocouple, mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRTD Types Supported\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePt 100\/200\/500\/1000 (α=385, α=3916), Ni 100\/120\/200\/500 (α=672, α=618), Cu 10 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermocouple Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB, C, D, E, J, K, N, R, S, T, L (TXK\/XK)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Ranges\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1–500 Ω, 2–1000 Ω, 4–2000 Ω, 8–4000 Ω, –100…100 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24-bit (0.06–0.50 mΩ\/count depending on range; 0.01 µV\/count for mV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIEEE 32-bit floating point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Scan Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCJC Sensors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegrated; ±0.3 °C accuracy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current (5 VDC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current (24 VDC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 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\u003e4.6 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15.7 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOpen Circuit Detection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2–5 seconds depending on sensor type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNoise Rejection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 dB normal mode @ 60 Hz; 125–160 dB common mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal Block Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1756-TBNH, 1756-TBS6H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About 1756-IRT8I\u003c\/h4\u003e\n\u003cp\u003eThe 1756-IRT8I belongs to the ControlLogix analog family and provides isolated measurement channels capable of reading resistance, voltage, and temperature inputs. Using sigma-delta conversion, the module delivers 32-bit floating-point output data with selectable ranges, filtering, and engineering units. Compatibility includes a wide range of RTD elements, all major thermocouple standards, and ±100 mV millivolt signals. The module features cold-junction compensation, synchronized sampling, wire-off detection, and under\/over-range alarms for robust process integrity. With built-in isolation, a 1 ms scan time, and support for 1756-TBNH or 1756-TBS6H terminal blocks, the 1756-IRT8I is well suited for precision temperature control, monitoring, and analytics applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEight Isolated Channels: Individually isolated RTD, thermocouple, or mV inputs for high-accuracy sensing.\u003c\/li\u003e\n\u003cli\u003eWide Sensor Compatibility: Supports platinum, nickel, and copper RTDs plus B, C, D, E, J, K, N, R, S, T, and L (TXK\/XK) thermocouples.\u003c\/li\u003e\n\u003cli\u003eHigh-Resolution Conversion: 24-bit sigma-delta ADC producing IEEE 32-bit floating-point data.\u003c\/li\u003e\n\u003cli\u003eMultiple Input Ranges: Configurable resistance ranges up to 4000 Ω and ±100 mV signal inputs.\u003c\/li\u003e\n\u003cli\u003eAdvanced Diagnostics: Includes open-circuit detection, alarms, filtering, and lead-resistance calibration.\u003c\/li\u003e\n\u003cli\u003eCold Junction Compensation: Integrated CJC sensors with ±0.3 °C accuracy.\u003c\/li\u003e\n\u003cli\u003eFast Module Scan Time: 1 ms update for responsive temperature and mV measurement.\u003c\/li\u003e\n\u003cli\u003eRobust Electrical Isolation: 250 V continuous isolation for safe and reliable industrial operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1756-IRT8I delivers the reliability and precision required for advanced temperature and low-level signal measurement in ControlLogix automation systems.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":49105030709504,"sku":"1756-IRT8I","price":3211.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/1756-IRT8I.webp?v=1785538385","url":"https:\/\/alotechparts.com\/products\/1756-irt8i-allen-bradley-controllogix-8-channel-isolated-rtdthermocouplemv-input-module","provider":"Alo Tech Solutions","version":"1.0","type":"link"}