{"product_id":"allen-bradley-1746-nt8-slc-500-thermocouple-input-module-8-ch","title":"Allen-Bradley 1746-NT8 | SLC 500 Thermocouple Input Module 8-Ch","description":"\u003ch2 style=\"color: #0055A4;\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #0055A4;\"\u003eAllen-Bradley 1746-NT8\u003c\/strong\u003e is an 8-channel Thermocouple\/mV Analog Input Module for the SLC 500 system. It accepts J, K, T, E, S, R, B, and N thermocouple types, as well as ±50mV and ±100mV signals. This module delivers 16-bit resolution with Sigma-Delta conversion for precise temperature measurement.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #0055A4;\"\u003eCore Functionality\u003c\/h2\u003e\n\u003cp\u003eThe 1746-NT8 converts analog thermocouple or millivolt signals to digital values for SLC 500 processors. It features automatic calibration every 2 minutes, selectable filter frequencies, and open-circuit detection (zero, upscale, or downscale). Two cold-junction compensation sensors on the 1746-RT34 terminal block ensure accurate temperature readings. The module supports engineering units, PID-scaled, or proportional counts data formats.\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;\"\u003e1746-NT8\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;\"\u003eSLC 500\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 Analog Input\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, T, E, S, R, B, N\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMillivolt Inputs\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e±50mV, ±100mV\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 in \/ 14-bit out\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eA\/D Conversion\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSigma-Delta modulation\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eUpdate Time\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e356ms to 4.05s\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBackplane Current (5V \/ 24V)\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e120mA \/ 70mA\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBackplane Power\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e2.28W max\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eInput Impedance\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u0026gt;10MΩ\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOvervoltage Protection\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e±30V DC (600W pulse)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eIsolation (Input to Backplane)\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e500V DC for 1 min\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOpen Circuit Detection\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eZero \/ Upscale \/ Downscale\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCJC Accuracy\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e±1.72°C\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOperating Temperature\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0°C to 60°C\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;\"\u003e0.34 kg (0.75 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\u003eInstall the 1746-NT8 in any SLC 500 chassis slot except Slot 0 (reserved for CPU or communication adapters). Connect thermocouple or millivolt sensors using the 1746-RT34 removable terminal block. The terminal block includes two CJC sensors. Ensure input devices have impedance under 100Ω for rated accuracy. Configure input type and data format (engineering units, PID-scaled, or proportional counts) in the SLC 500 program.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #0055A4;\"\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThis module supports eight thermocouple types plus millivolt inputs, offering flexibility for diverse temperature measurement applications. Sigma-Delta conversion with programmable filtering provides noise rejection \u0026gt;100dB at 50-60Hz. Automatic calibration ensures long-term accuracy. Open-circuit detection with selectable response helps identify sensor faults. The module fits both fixed and modular SLC 500 systems.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #0055A4;\"\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Supported thermocouple types?\u003c\/strong\u003e\u003cbr\u003e\nA1: J, K, T, E, S, R, B, and N. Also supports ±50mV and ±100mV inputs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Where to install the module?\u003c\/strong\u003e\u003cbr\u003e\nA2: Any SLC 500 chassis slot except Slot 0. Slot 0 is reserved for processor or communication adapters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Update time and resolution?\u003c\/strong\u003e\u003cbr\u003e\nA3: Update time 356ms to 4.05s (filter dependent). Resolution 16-bit in \/ 14-bit out.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52664954126468,"sku":"1746-NT8","price":195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/1746-NT8_2.jpg?v=1787316519","url":"https:\/\/www.etowonauto.com\/tr\/products\/allen-bradley-1746-nt8-slc-500-thermocouple-input-module-8-ch","provider":"Etowon Auto","version":"1.0","type":"link"}