Description / توضیحات
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
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
