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1746-NT8 | Allen-Bradley SLC 500 8-Channel Thermocouple/mV Analog Input Module
- Regular price
- $689.00
- Sale price
- $689.00
- Regular price
-
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Product Description P/N: 1746-NT8
Description
The Allen-Bradley 1746-NT8 is an 8-channel thermocouple and millivolt analog input module designed for temperature and low-level signal monitoring in SLC 500 systems. The 1746-NT8 supports multiple thermocouple types and mV ranges, using sigma-delta conversion for accurate, noise-resistant measurements. Its wide compatibility with fixed and modular SLC 500 controllers makes it suitable for process monitoring and precision temperature applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Input Module |
| Part Number | 1746-NT8 |
| Subcategory | Input Module |
| Series | SLC 500 |
| Module Type | Thermocouple/mV Analog Input Module |
| Number of Inputs | 8 channels |
| Supported Thermocouple Types | J, K, T, E, S, R, B, N |
| mV Input Ranges | ±50 mV, ±100 mV |
| Resolution | 16-bit in; 14-bit out |
| A/D Conversion Method | Sigma-delta modulation |
| Open Circuit Detection | Zero, Upscale, Downscale |
| Update Time | 356 ms to 4.05 s |
| Step Response | 60 ms input, 2.5 ms output |
| Backplane Current (5 VDC) | 120 mA |
| Backplane Current (24 VDC) | 70 mA |
| Backplane Power Consumption | 2.28 W max |
| Overvoltage Protection | ±30 VDC; 600 W pulsed (1 ms) |
| Isolation | 12.5 VDC circuit isolation; 500 VDC test |
| Terminal Block | 1746-RT34 with CJC sensors |
| CJC Accuracy | ±1.72 °C |
| Input Impedance | >10 MΩ (device <100 Ω recommended) |
| Indicators | 9 green status LEDs |
| I/O Chassis Location | Any slot except Slot 0 |
| Operating Temperature | 0…60 °C |
| Storage Temperature | –40…85 °C |
| Humidity | 5–95% non-condensing |
| Mounting | SLC 500 fixed or modular chassis |
| Compliance | UL & cUL listed |
Information About 1746-NT8
The 1746-NT8 is part of the Allen-Bradley SLC 500 I/O family and provides eight isolated analog input channels designed to accept thermocouple or low-level millivolt signals. It supports multiple TC types—including J, K, T, E, S, R, B, and N—and mV inputs up to ±100 mV, making it adaptable for diverse sensing installations. Using sigma-delta A/D conversion, the module offers high noise immunity, programmable digital filtering, and reliable signal capture even in electrically noisy environments. Designed for flexible installation, the 1746-NT8 may be installed in any modular chassis slot except Slot 0, and includes built-in open-circuit detection, self-calibration, and diagnostic indicators for dependable performance.
Key Features
- 8-Analog Input Channels: Supports thermocouple and millivolt signal types across multiple ranges.
- Wide Thermocouple Compatibility: Accepts J, K, T, E, S, R, B, and N sensor types.
- High-Resolution Conversion: Provides 16-bit input resolution and 14-bit output data formatting.
- Sigma-Delta A/D Technology: Ensures high accuracy with strong rejection of 50–60 Hz noise.
- Built-In Diagnostics: Includes open-circuit detection, over/under-range alarms, and error bits.
- Automatic Calibration: Performs periodic self-calibration to maintain measurement accuracy.
- Flexible Mounting Options: Works with fixed SLC systems or any modular chassis slot except Slot 0.
- Robust Environmental Ratings: Operates across industrial temperature ranges with 500 V isolation and CJC support.
The 1746-NT8 delivers the reliability and precision required for advanced temperature monitoring and millivolt signal acquisition in industrial control systems.
Description
The Allen-Bradley 1746-NT8 is an 8-channel thermocouple and millivolt analog input module designed for temperature and low-level signal monitoring in SLC 500 systems. The 1746-NT8 supports multiple thermocouple types and mV ranges, using sigma-delta conversion for accurate, noise-resistant measurements. Its wide compatibility with fixed and modular SLC 500 controllers makes it suitable for process monitoring and precision temperature applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Input Module |
| Part Number | 1746-NT8 |
| Subcategory | Input Module |
| Series | SLC 500 |
| Module Type | Thermocouple/mV Analog Input Module |
| Number of Inputs | 8 channels |
| Supported Thermocouple Types | J, K, T, E, S, R, B, N |
| mV Input Ranges | ±50 mV, ±100 mV |
| Resolution | 16-bit in; 14-bit out |
| A/D Conversion Method | Sigma-delta modulation |
| Open Circuit Detection | Zero, Upscale, Downscale |
| Update Time | 356 ms to 4.05 s |
| Step Response | 60 ms input, 2.5 ms output |
| Backplane Current (5 VDC) | 120 mA |
| Backplane Current (24 VDC) | 70 mA |
| Backplane Power Consumption | 2.28 W max |
| Overvoltage Protection | ±30 VDC; 600 W pulsed (1 ms) |
| Isolation | 12.5 VDC circuit isolation; 500 VDC test |
| Terminal Block | 1746-RT34 with CJC sensors |
| CJC Accuracy | ±1.72 °C |
| Input Impedance | >10 MΩ (device <100 Ω recommended) |
| Indicators | 9 green status LEDs |
| I/O Chassis Location | Any slot except Slot 0 |
| Operating Temperature | 0…60 °C |
| Storage Temperature | –40…85 °C |
| Humidity | 5–95% non-condensing |
| Mounting | SLC 500 fixed or modular chassis |
| Compliance | UL & cUL listed |
Information About 1746-NT8
The 1746-NT8 is part of the Allen-Bradley SLC 500 I/O family and provides eight isolated analog input channels designed to accept thermocouple or low-level millivolt signals. It supports multiple TC types—including J, K, T, E, S, R, B, and N—and mV inputs up to ±100 mV, making it adaptable for diverse sensing installations. Using sigma-delta A/D conversion, the module offers high noise immunity, programmable digital filtering, and reliable signal capture even in electrically noisy environments. Designed for flexible installation, the 1746-NT8 may be installed in any modular chassis slot except Slot 0, and includes built-in open-circuit detection, self-calibration, and diagnostic indicators for dependable performance.
Key Features
- 8-Analog Input Channels: Supports thermocouple and millivolt signal types across multiple ranges.
- Wide Thermocouple Compatibility: Accepts J, K, T, E, S, R, B, and N sensor types.
- High-Resolution Conversion: Provides 16-bit input resolution and 14-bit output data formatting.
- Sigma-Delta A/D Technology: Ensures high accuracy with strong rejection of 50–60 Hz noise.
- Built-In Diagnostics: Includes open-circuit detection, over/under-range alarms, and error bits.
- Automatic Calibration: Performs periodic self-calibration to maintain measurement accuracy.
- Flexible Mounting Options: Works with fixed SLC systems or any modular chassis slot except Slot 0.
- Robust Environmental Ratings: Operates across industrial temperature ranges with 500 V isolation and CJC support.
The 1746-NT8 delivers the reliability and precision required for advanced temperature monitoring and millivolt signal acquisition in industrial control systems.