{"product_id":"ai835a-thermocouple-input-module-8-channel-abb","title":"AI835A Thermocouple Input Module | 8-Channel ABB","description":"\u003ch2\u003eABB AI835\/AI835A Thermocouple Input Module: Advanced Temperature Measurement\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB AI835\/AI835A\u003c\/strong\u003e Thermocouple Input Module delivers precision temperature monitoring with advanced cold junction compensation. This high-resolution module features eight differential inputs and supports multiple thermocouple types for industrial applications.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Input Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEight \u003cspan style=\"color: #ff6600;\"\u003edifferential input channels\u003c\/span\u003e for superior noise rejection\u003c\/li\u003e\n\u003cli\u003eSupports -30 mV to +75 mV linear voltage measurements\u003c\/li\u003e\n\u003cli\u003eCompatible with thermocouple types B, C, E, J, K, N, R, S, T\u003c\/li\u003e\n\u003cli\u003eAI835A additionally supports types D, L, and U thermocouples\u003c\/li\u003e\n\u003cli\u003eChannel 8 configurable as \u003cspan style=\"color: #ff6600;\"\u003eCold Junction compensation\u003c\/span\u003e channel\u003c\/li\u003e\n\u003cli\u003eCold junction measurement via 4-wire Pt100 RTD\u003c\/li\u003e\n\u003cli\u003eFlexible CJ measurement locally or on distant connection units\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHigh-Precision Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #ff6600;\"\u003e15-bit resolution\u003c\/span\u003e A\/D converter for exceptional accuracy\u003c\/li\u003e\n\u003cli\u003eInput impedance greater than 1 MΩ for minimal loading\u003c\/li\u003e\n\u003cli\u003eMaximum error of 0.1% for reliable measurements\u003c\/li\u003e\n\u003cli\u003eLow temperature drift: typical 5 ppm\/°C, maximum 7 ppm\/°C\u003c\/li\u003e\n\u003cli\u003eUpdate cycle: 280 + 80 × (active channels) ms at 50 Hz\u003c\/li\u003e\n\u003cli\u003eFaster update: 250 + 70 × (active channels) ms at 60 Hz\u003c\/li\u003e\n\u003cli\u003eExcellent CMRR of 120 dB and NMRR \u0026gt; 60 dB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum field cable length: 600 meters (656 yards)\u003c\/li\u003e\n\u003cli\u003ePower dissipation: 1.6 W for efficient operation\u003c\/li\u003e\n\u003cli\u003eCurrent consumption: 75 mA from +5V Modulebus\u003c\/li\u003e\n\u003cli\u003eAdditional 50 mA from +24V Modulebus supply\u003c\/li\u003e\n\u003cli\u003eDielectric test voltage: 500 V AC for insulation safety\u003c\/li\u003e\n\u003cli\u003eRated insulation voltage: 50 V\u003c\/li\u003e\n\u003cli\u003eGroup-wise isolation from ground for enhanced safety\u003c\/li\u003e\n\u003cli\u003eCompact S800 mechanics with 45mm width\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEnvironmental Ratings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperating temperature: 0 to +55°C (32 to 131°F)\u003c\/li\u003e\n\u003cli\u003eStorage temperature: -40 to +70°C (-40 to 158°F)\u003c\/li\u003e\n\u003cli\u003eRelative humidity: 5 to 95% non-condensing\u003c\/li\u003e\n\u003cli\u003eIP20 protection rating per IEC 60529 standard\u003c\/li\u003e\n\u003cli\u003eISA-S71.04 G3 corrosion protection level\u003c\/li\u003e\n\u003cli\u003ePollution degree 2 per IEC 60664-1\u003c\/li\u003e\n\u003cli\u003eSuitable for harsh industrial environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSystem Integration\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with MTU models: TU810, TU812, TU814, TU818, TU830, TU833\u003c\/li\u003e\n\u003cli\u003eKeying code BA ensures proper module insertion\u003c\/li\u003e\n\u003cli\u003eCompact dimensions: 45mm × 102mm × 119mm (W×D×H)\u003c\/li\u003e\n\u003cli\u003eLightweight design: 0.22 kg (0.49 lbs)\u003c\/li\u003e\n\u003cli\u003eArticle number: 3BSE051306R1 for easy identification\u003c\/li\u003e\n\u003cli\u003eSeamless integration with ABB S800 I\/O system\u003c\/li\u003e\n\u003cli\u003eStandard industrial installation procedures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat thermocouple types does the AI835\/AI835A support?\u003c\/strong\u003e\u003cbr\u003eThe module supports types B, C, E, J, K, N, R, S, T, with AI835A adding D, L, and U types.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does the cold junction compensation work?\u003c\/strong\u003e\u003cbr\u003eChannel 8 can be configured as a CJ channel using 4-wire Pt100 RTD to measure ambient temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the resolution of the A\/D converter?\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003eAI835\/AI835A\u003c\/strong\u003e features high 15-bit resolution for precise temperature measurements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan all eight channels be used for temperature measurement?\u003c\/strong\u003e\u003cbr\u003eYes, though channel 8 is typically used for CJ compensation, it can function as a standard input when needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the maximum update rate?\u003c\/strong\u003e\u003cbr\u003eUpdate time depends on active channels: 280ms + 80ms per channel at 50Hz, or 250ms + 70ms per channel at 60Hz.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e© 2025 AutoNex Controls Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003ca href=\"https:\/\/www.autonexcontrol.com\/\"\u003ehttps:\/\/www.autonexcontrol.com\/\u003c\/a\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e\u003cbr\u003ePhone: \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":45315834740897,"sku":"AI835A","price":122.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/AI835A.jpg?v=1762323899","url":"https:\/\/www.autonexcontrol.com\/uk\/products\/ai835a-thermocouple-input-module-8-channel-abb","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}