1794-IR8
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Replace Industrial is NOT an authorized distributor for Allen-Bradley
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Product Conditions
Product Conditions
Surplus: Surplus units show no signs of installation or having been used previously. These units are in the original packaging, which may have been opened.
Used: Used units have been previously used and are inspected, cleaned and tested.
All units come with a 1 Year Replace Industrial Warranty.
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Tax & Exemptions
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Product Conditions
Replace Industrial, LLC is not affiliated with any of the manufacturers listed on this website. All products are sourced & verified through the industrial surplus market and through other independent supply chains. We do not convey any manufacturer warranty with the product. Each product sold comes with a 2 Year Replace Industrial Warranty, unless specified otherwise. This warranty conveys solely through Replace Industrial, LLC. and is completely unaffiliated with any manufacturer warranty. The terms of our warranty can be found here.
Surplus: This unit is sourced through the industrial market outside of the manufacturer and has been independently verified to not have been used operationally previously. These units are in the original packaging, but the packaging & unit may show signs of shelf wear.
Used: This unit may have been previously used and show signs of wear. The unit has been independently verified and is guaranteed with a 1 Year Replace Automation Warranty. The unit has been sourced through independent supply chains in the industrial markets.
Firmware: Replace Industrial, LLC sells hardware only and does not sell firmware and makes no representation as to what firmware may or may not be present on the hardware. We do not obtain or provide software for customers.
Allen-Bradley 1794-IR8
The Allen-Bradley 1794-IR8 Flex I/O module by Rockwell Automation offers 8 RTD input channels with a 16-bit resolution for precise temperature measurements. It supports a variety of sensors, including Pt, Ni, and Cu, across a wide temperature range and provides robust noise rejection for accurate readings in industrial environments.
| Manufacturer | Rockwell Automation |
| Resolution | 16 bits across 435 ohms |
| Brand | Allen-Bradley |
| Product Description | Flex IO 8-Channel RTD Input Module |
| Number of Inputs | 8 |
| Terminal base | 1794-TB2, 1794-TB3 and 1794-TB3T |
| Sensors supported | 100 ? Pt ? = 0.00385 Euro (-200…+870 °C) 100 ? Pt ? = 0.003916 U.S. (-200…+630 °C) 200 ? Pt ? = 0.00385 Euro (-200…+630 °C) 500 ? Pt ? = 0.00385 U.S. (-200…+630 °C) 100 ? Nickel ? = 0.00618 (-60…+250 °C) 120 ? Nickel ? = 0.00672 (-60…+250 °C) 200 ? Nickel ? = 0.00618 (-60…+250 °C) 500 ? Nickel ? = 0.00618 (-60…+250 °C) 10 ? Copper ? = 0.00427 (-200…+260 °C). |
| RTD Excitation Current | 718.36?A |
| Accuracy | Without calibration, at low humidity: Normal mode: 0.05% full scale (max) Enh. mode: 0.01% full scale (typical) |
| Data Format | 16-bit 2's complement or offset binary (unipolar) |
| System Throughput | Normal Mode: Programmable from 28ms/channel to 325ms/channel 325ms (1 channel scanned) 2.6s (8 channels scanned) - defaultEnhanced Mode: Programmable from 56ms/channel to 650ms/channel 650ms (1 channel scanned) - default 2.925s (8 channels scanned) |
| Mounting | DIN Rail |
| Wire Size | Determined by installed terminal base |
| Operating Temperature | 0 to 55 C (32 to 131 F) |
| Storage Temperature | –40…85 °C (–40…185 °F) |
| Vibration | 5g @ 10 to 500 Hz |
| Operating Shock | 30 g |
| Part Number/Catalog No. | 1794-IR8 |
| Product Type | Flex I/O RTD Module |
| Inputs | 8 Channels |
| Nominal Input Ranges | 1 to 433 ohms |
| Isolation Voltage | 850 Volts DC |
| Normal Mode Noise Rejection | -60 DB at 60 Hertz |
| Channel Bandwidth | 0 to 2.62 Hertz |
| Normal Mode System Throughput | 325 milliseconds |
| Flexbus Current | 20mA |
| Power Dissipation | 3 Watts at 31.2 Volts DC maximum |
| Thermal Dissipation | 10.2 BTU/hour at 31.2 Volts DC maximum |
| UPC | 10612598137821 |
| UNSPSC | 32151602 |
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