Allen Bradley 1794-IT8 FLEX Thermocouple Input Module

1794-IT8 | Allen Bradley FLEX Thermocouple Input Module

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Part Number: 1794-IT8

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Part Number: 1794-IT8

Model: FLEX Thermocouple Input Module

Manufacturer: Allen Bradley

Model		1794-IT8
Number of Inputs		8 channels
Module Location		Cat. No. 1794-TB2, -TB3, -TB3S, -TB3T and -TB3TS Terminal Base Units
Nominal Input Ranges		-76.5 to +76.5mV
Resolution		16 bits (2.38?V typical)
Common Mode Rejection		-115db @ 60Hz; -100db @ 50Hz
Common Mode Input Range		+10V maximum
Isolation Voltage		Tested at 850V dc for 1s from inputs and user power to logic side
Data Format		16-bit 2 s complement or offset binary (unipolar)
Normal Mode Noise Rejection		-60db @ 60Hz
Input Offset Drift w/Temperature		?6mV/?C maximum
Gain Drift w/Temp.		10ppm/?C maximum
Channel Bandwidth		0-2.62Hz (-3db)
Settling time to 100% of final value		Available at system throughput rate
System Throughput		325ms (1 channel scanned), programmable to 28ms 2.6s (8 channels scanned), programmable to 224ms
Open TC/RTD Circuit Detection		Out of range reading (upscale)
Open TC/RTD Detection Time		Available at system throughput rate
Overvoltage Capability		35V dc, 25V ac continuous at 25?C
Overall Drift with Temperature		50ppm/?C of span (maximum)
Cold Junction Compension		Range: 0 to 70?C A-B catalog number 1794-CJC2
Channel to channel isolation		+10V
Indicators		1 red/green power status indicator
Flexbus Current		20mA
Power Dissipation		3.0W maximum @ 31.2V dc
Thermal Dissipation		Maximum 10.2 BTU/hr @ 31.2V dc
Keyswitch Position		3

1794-IT8 | Allen Bradley FLEX Thermocouple Input Module