Specifications appendix a – Rockwell Automation 1771-IXHR , D17716.5.80 HIGH RESOL.THERMOCOUPLE User Manual
Page 49
Specifications
Appendix A
A-2
The accuracy of your thermocouple readings depends on:
module accuracy
lead resistance effect
accuracy of the thermocouple
The accuracy of the module is shown in Table A.A and Table A.B at ambient
temperature (25
o
C) and over the temperature range (0–60
o
C).
Use the calibration procedure in Chapter 7 to adjust your module to compensate
for your specific environment.
Table A.A
Thermocouple Range Accuracy Based on Temperatures Above 0
o
C
Thermocouple
Type
Temperature
Range
o
C
Max Error @
Calibration
Temperature (25
o
C)
1
Temperature Drift
o
C/
o
C (0-60
o
C)
or
o
F/
o
F (32-140
o
F)
B
320 to 1800
+1.07
o
C/+1.91
o
F
+0.0746
E
-270 to 1000
+0.50
o
C/+0.90
o
F
+0.0400
J
-210 to 1200
+0.51
o
C/+0.90
o
F
+0.0423
K
-270 to 1380
+0.52
o
C/+0.94
o
F
+0.0640
T
-270 to 400
+0.52
o
C/+0.92
o
F
+0.0183
R
-50 to 1770
+1.14
o
C/+2.00
o
F
+0.0914
S
-50 to 1770
+1.12
o
C/+2.01
o
F
+0.0926
1
Type E, J, K, T, R and S error is specified from 0
o
C (32
o
F) to the maximum range of the
thermocouple. Type B is specified from 600
o
C to maximum range. Error does not include
thermocouple or lead error (see appendix F and page A-3).
Table A.B
Millivolt Range Accuracy
Millivolt
Range
Max Error @ Calibration
Temperature (25
o
C)
Millivolt Drift
-100 to 100 (Normal mode)
+8.85
µ
V
+3.856
µ
V/
o
C
-100 to 100 (Zoom mode)
+5.78
µ
V
+3.856
µ
V/
o
C
Table A.C
Radiated Noise Susceptibility
Radiated Noise
Susceptibility Error
300-1000MHz Circular Wave, Field Strength = 10V/M
< +1%
High Resolution
Thermocouple/Millivolt Input
Module Accuracy