Rockwell Automation 1762-IT4 Thermocouple/mV Input Module - Manual (Page 81)

Publication 1762-UM002A-EN-P - July 2002
Specifications A-5
Accuracy Versus Thermocouple Temperature and Filter
Frequency
The following graphs show the module’s accuracy when operating at
25°C 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 A.1 Module Accuracy at 25°C (77°F) Ambient for Type B Thermocouple Using
10, 50, and 60 Hz Filter
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
200 400 600 800 1000 1200 1 400 1600 1800 2000
10 Hz
50 Hz
60 Hz
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
500 1000 1500 2000 2500 3000 3500
10 Hz
50 Hz
60 Hz
Thermocouple Temperature °C
Thermocouple Temperature °F
A
ccuracy
°C
A
ccurac
y °F