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1746-NT8 | Allen-Bradley SLC 500 8-Channel Thermocouple/mV Analog Input Module
- Regular price
- $885.00
- Sale price
- $885.00
- 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.
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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 | ยฑ50 mV, ยฑ100 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 | ยฑ30 VDC; 600 W pulsed (1 ms) |
| Isolation | 12.5 VDC circuit isolation; 500 VDC test |
| Terminal Block | 1746-RT34 with CJC sensors |
| CJC Accuracy | ยฑ1.72 ยฐC |
| Input Impedance | >10 Mฮฉ (device <100 ฮฉ recommended) |
| Indicators | 9 green status LEDs |
| I/O Chassis Location | Any slot except Slot 0 |
| Operating Temperature | 0โฆ60 ยฐC |
| Storage Temperature | โ40โฆ85 ยฐC |
| Humidity | 5โ95% non-condensing |
| Mounting | SLC 500 fixed or modular chassis |
| Compliance | UL & cUL listed |
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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 typesโincluding J, K, T, E, S, R, B, and Nโand mV inputs up to ยฑ100 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 50โ60 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.
ย
ย
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 | ยฑ50 mV, ยฑ100 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 | ยฑ30 VDC; 600 W pulsed (1 ms) |
| Isolation | 12.5 VDC circuit isolation; 500 VDC test |
| Terminal Block | 1746-RT34 with CJC sensors |
| CJC Accuracy | ยฑ1.72 ยฐC |
| Input Impedance | >10 Mฮฉ (device <100 ฮฉ recommended) |
| Indicators | 9 green status LEDs |
| I/O Chassis Location | Any slot except Slot 0 |
| Operating Temperature | 0โฆ60 ยฐC |
| Storage Temperature | โ40โฆ85 ยฐC |
| Humidity | 5โ95% non-condensing |
| Mounting | SLC 500 fixed or modular chassis |
| Compliance | UL & cUL listed |
ย
ย
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 typesโincluding J, K, T, E, S, R, B, and Nโand mV inputs up to ยฑ100 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 50โ60 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.