System Temperature Error For The Dt9871U And Dt9874 - Data Translation DT9871 User Manual

Appendix A

System Temperature Error for the DT9871U and DT9874

Table 9
several temperature points over the dynamic range of the instrument.
Table 9: Typical Thermocouple Accuracy of the DT9871U and DT9874
Input
Temp.
–100C
0C
100C
300C
500C
700C
900C
1100C
1400C
a. Conditions for accuracy measurements:
MEASURpoint warm-up time of 1 hour. Inclusive of typical 0.15
errors.
Table 10
at several temperature points over the dynamic range of the instrument.
Table 10: Maximum Thermocouple Accuracy of the DT9871U and DT9874
Input
Temp.
–100C
0C
100C
300C
500C
700C
900C
1100C
1400C
a. Conditions for accuracy measurements:
MEASURpoint warm-up time of 1 hour. Maximum accuracy inclusive of 0.25
thermocouple errors.
112
lists the typical accuracy of the DT9871U and DT9874 for each thermocouple type at
J K T
0.17C 0.17C 0.16C
0.15C 0.16C 0.16C
0.18C 0.15C 0.16C
0.15C 0.17C 0.16C
0.15C 0.15C
-----------
0.15C 0.15C
-----------
0.15C 0.17C
-----------
0.15C 0.16C
-----------
----------- ----------- -----------
lists the maximum accuracy of the DT9871U and DT9874 for each thermocouple type
J K T
0.35C 0.38C 0.39C
0.33C 0.35C 0.35C
0.34C 0.31C 0.34C
0.31C 0.36C 0.32C
0.30C 0.33C
-----------
0.30C 0.33C
-----------
0.30C 0.36C
-----------
0.31C 0.35C
-----------
----------- ----------- -----------
a
Thermocouple Type
E S
0.16C
----------- -----------
0.15C 0.20C 0.20C
0.15C 0.18C 0.18C
0.15C 0.18C 0.18C
0.15C 0.18C 0.17C
0.16C 0.18C 0.18C
0.17C 0.18C 0.18C
0.19C 0.18C
-----------
0.18C 0.18C
-----------

C CJC error. Exclusive of thermocouple
a
Thermocouple Type
E S
0.34C
----------- -----------
0.32C 0.96C 0.98C
0.31C 0.77C 0.76C
0.30C 0.67C 0.65C
0.30C 0.64C 0.61C
0.31C 0.62C 0.58C
0.31C 0.60C 0.56C
0.59C 0.54C
-----------
0.57C 0.53C
-----------

C CJC error. Exclusive of
R B N
0.16C
-----------
0.16C
-----------
0.15C
-----------
0.23C 0.15C
0.21C 0.15C
0.17C 0.16C
0.19C 0.16C
0.18C 0.16C
0.17C
-----------
R B N
0.43C
-----------
0.40C
-----------
0.37C
-----------
1.52C 0.35C
1.02C 0.34C
0.80C 0.35C
0.72C 0.35C
0.65C 0.35C
0.59C
-----------