Rockwell Automation 1769-IT6 Compact I/O 1769-IT6 Thermocouple/mV Input Module - Manual (Page 87)

Rockwell Automation Publication 1769-UM004B-EN-P - March 2010 87
Specifications Appendix A
Accuracy versus Thermocouple Temperature and Filter
Frequency
The following graphs show the module’s accuracy when operating at 25 °C
(77 °F) for each thermocouple type over the thermocouple’s temperature range
for each frequency. The effect of errors in cold junction compensation is not
included.
Figure 23 - Module Accuracy at 25 °C (77 °F) Ambient for Type B Thermocouple
Using 10, 50, and 60 Hz Filter
0
0.5
1.0
1.5
2.0
2.5
3.0
0 200 400 600 800 1000 1200 1400 1600 1800 2000
10 Hz
50 Hz
60 Hz
0
1
2
3
4
5
6
500 1000 1500 2000 2500 3000 3500
10 Hz
50 Hz
60 Hz
Thermocouple Temperature °C
Thermocouple Temperature °F
Accuracy
°C
A
ccu
ra
cy
°F