{"product_id":"allen-bradley-1746-nt8-slc-500-thermocouple-mv-analog-input-module","title":"Allen-Bradley 1746-NT8 | SLC 500 Thermocouple\/mV Analog Input Module","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NT8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis an 8-channel SLC 500 analog input module designed for thermocouple and millivolt signals. It supports both fixed and modular SLC 500 installations.\u003c\/p\u003e\n\u003ch3\u003eInput Channels and Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis module accommodates J, K, T, E, S, R, B, and N thermocouples. It also accepts ±50 mV and ±100 mV signals for precise measurement applications.\u003c\/p\u003e\n\u003ch3\u003eMemory and Conversion\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NT8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003euses Sigma-delta A\/D conversion with 16-bit input and 14-bit output resolution. Step response times are 60 ms in and 2.5 ms out for accurate data acquisition.\u003c\/p\u003e\n\u003ch3\u003eBackplane and Power\u003c\/h3\u003e\n\u003cp\u003eIt draws 120 mA at 5V DC and 70 mA at 24V DC, with total power consumption of 2.28W. The module installs in any SLC 500 chassis slot except Slot 0.\u003c\/p\u003e\n\u003ch3\u003eProtection and Isolation\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NT8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides input overvoltage protection of ±30 VDC and 600 W pulsed for 1 ms. Isolation tests include 12.5 VDC between inputs, chassis ground, and backplane.\u003c\/p\u003e\n\u003ch3\u003eEnvironmental Specifications\u003c\/h3\u003e\n\u003cp\u003eThe module operates between 0°C and 60°C and withstands storage from -40°C to 85°C. It functions reliably at 5–95% humidity without condensation.\u003c\/p\u003e\n\u003ch3\u003eAdditional Features\u003c\/h3\u003e\n\u003cp\u003eIncluded are two cold-junction compensation sensors with ±1.72°C accuracy. The module features nine LED indicators for channel and module status, programmable open-circuit detection, and a low-pass digital filter.\u003c\/p\u003e\n\u003ch3\u003eCompliance\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NT8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis UL and CUL-approved, ensuring adherence to industrial safety and reliability standards.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":50638743961896,"sku":"1746-NT8","price":152.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/6266\/2184\/files\/1746-NT83.jpg?v=1757655910","url":"https:\/\/www.powerdcs.com\/products\/allen-bradley-1746-nt8-slc-500-thermocouple-mv-analog-input-module","provider":"Power DCS Parts Limited","version":"1.0","type":"link"}