User Manual

SpecificationsA–2
Publication 1771-6.5.130 Ć May 1999
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 NO TAG and NO TAG at
ambient temperature (25
o
C) and over the temperature range
(0–60
o
C).
Use the calibration procedure in Chapter 6 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)
E -270 to 1000 +0.74
o
C/+1.08
o
F +0.0400
J -210 to 1200 +0.78
o
C/+1.10
o
F +0.0423
K -270 to 1380 +0.77
o
C/+1.15
o
F +0.0640
T -270 to 400 +0.77
o
C/+1.17
o
F +0.0183
R -50 to 1770 +1.50
o
C/+2.11
o
F +0.0914
S -50 to 1770 +1.50
o
C/+2.31
o
F +0.0926
1
Error is specified from 0
o
C (32
o
F) to the maximum range of the thermocouple. Error does
not include thermocouple error (see appendix F).
Table A.B
Millivolt Range Accuracy
Millivolt
Range
Max Error
@ Calibration
Temperature (25
o
C)
Millivolt Drift
-100 to 100 +8.85uV +3.856uV/
o
C
Table A.C
Radiated Noise Susceptibility
Radiated Noise
Susceptibility Error
300-1000MHz Circular Wave, Field Strength = 10V/M <+1%
Thermocouple/Millivolt
Input Module Accuracy