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The 1794sc-IRT8I is an isolated input module from Allen Bradley's Flex I/O 1794 series designed for thermocouples and RTDs. With the capacity to handle eight input channels, it provides versatility for various measurement applications.
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| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Isolated Thermocouple/RTD Input |
| Product Line | Flex I/O 1794 |
| Part Number | 1794sc-IRT8I |
| Weight | 2.00 lbs (0.91 kg) |
| UPC | 850637004083 |
| Number of Inputs | 8 Channels |
| Nominal Input Voltage Range | ±50 mV, ±100 mV |
| Input Impedance | >1 M Ω for voltage, thermocouple, RTD and resistance inputs; 249 Ω ±1% for current inputs |
| Resolution | 16 Bits |
| Min. Frequency | 50 Hz |
| Max. Frequency | 60 Hz |
| Common Mode Rejection | 60 dB at 5 V peak-to-peak |
| Thermal Dissipation | Max 10.2 BTU/Hr at 31.2 VDC |
| Power Dissipation | 6.28 W @ 31.2 VDC |
| Flexbus Current | 80 mA |
Providing precision measurement capabilities, the Allen Bradley 1794sc-IRT8I is a specialized isolated thermocouple and RTD input module within the Flex I/O 1794 series. This device accommodates up to eight input channels, making it suitable for applications in monitoring temperature and resistance. It is designed to manage input voltage ranges of ±50 mV and ±100 mV efficiently, ensuring compatibility with various sensors.
A notable feature of this module is its exceptional resolution of 16 bits, which allows for accurate data representation. Users can expect effective performance even at frequencies spanning from 50 Hz to 60 Hz. For diversified input types—voltage, thermocouple, RTD, and resistance—the input impedance surpasses 1 M Ω. Furthermore, the module has a specific impedance of 249 Ω ±1% for current inputs, making it adaptable for diverse sensor configurations.
In terms of electrical characteristics, the 1794sc-IRT8I showcases an effective common mode rejection of 60 dB, providing robust noise immunity at 5 V peak-to-peak. Power management is also addressed, with a power dissipation rating of 6.28 W when supplied with 31.2 VDC. The thermal dissipation level does not exceed 10.2 BTU/hr under typical load conditions, ensuring efficient thermal management. The Flexbus current consumption is rated at 80 mA, making it energy efficient within the operational framework. This module is a valuable component for environments that require precise temperature measurements and reliable input performance.
| Revision Part # | Also known as | |
|---|---|---|
| 1794sc-IRT8I Ser A | 1794sc-IRT8I/A, Series A, Rev A | |
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