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  4. 1794-IR8 | Allen Bradley FLEX Thermocouple Input Module
1794-IR8 | Allen Bradley FLEX Thermocouple Input Module
1794-IR8 | Allen Bradley FLEX Thermocouple Input Module

1794-IR8 | Allen Bradley FLEX Thermocouple Input Module

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Availability: In stock. Usually ships in 5 working days.
Part Number: 1794-IR8
USD838.00
Retail Price:USD986.00
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Part Number: 1794-IR8 

Model1794-IR8 
Number of Inputs8 channels
Module Location 
Cat. No. 1794-TB2, -TB3, -TB3S, -TB3T and -TB3TS Terminal Base Units
Nominal Input Ranges1 to 433 ohms
Resolution

16 bits across 435 ohms

Common Mode Rejection-120db @ 60Hz; -100db @ 50Hz with A/D filter cutoff @ 10Hz
Common Mode Input Range
0V between channels (common return)
Isolation VoltageTested at 850V dc for 1s from inputs and user power to logic side
Data Format16-bit 2 s complement or offset binary (unipolar)
Normal Mode Noise Rejection-60db @ 60Hz for A/D filter cutoff @ 10Hz
Input Offset Drift w/Temperature

1.5 milliohm/?C maximum

Gain Drift w/Temp.
Normal mode: 20ppm/?C max.
Enhanced mode: 10ppm/?C max.
Channel Bandwidth
0-2.62Hz (-3db)
Settling time to 100% of final valueAvailable at system throughput rate
System Throughput

Normal mode - 325ms (1 channel scanned), programmable to 28ms 2.6s (8 channels scanned), programmable to 224ms
Enhanced mode - programmable from 56 to 650ms/channel - 650ms (1 channel scanned), 2.925s (8 channels scanned)
Open TC/RTD Circuit DetectionOut of range reading (upscale)
Open TC/RTD Detection TimeAvailable at system throughput rate
Overvoltage Capability35V dc, 25V ac continuous at 25?C
Overall Drift with Temperature50ppm/?C of span (maximum)
Cold Junction Compension

Range: 0 to 70?C
A-B catalog number 1794-CJC2
Channel to channel isolation0V
Indicators1 red/green power status indicator
Flexbus Current20mA
Power Dissipation3.0W maximum @ 31.2V dc
Thermal DissipationMaximum 10.2 BTU/hr @ 31.2V dc
Keyswitch Position3

  • Availability: In Stock
  • Estimated Lead Time: Usually Ships in 5 - 7 Working Days
  • Shipping Weight: 2 Kg

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