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56 Agilent U2802A 31-Channel Thermocouple Input User’s Guide
Therefore,
E
THERMOCOUPLE
= 0.75% × 600 °C = 4.5 °C
Using the above individual component errors, the total measurement
system accuracy is calculated as below.
System accuracy without thermocouple sensor error:
E
TOTAL
= SQRT(E
DAQ
2
+ E
SIG_COND
2
+ E
ZEROING
2
+ E
CJC
2
)
= 0.95 °C
System accuracy with thermocouple sensor error:
E
TOTAL
= SQRT(E
DAQ
2
+ E
SIG_COND
2
+ E
ZEROING
2
+ E
CJC
2
+ E
THERMOCOUPLE
2
)
= 4.6 °C
U2802A_UG.book Page 56 Tuesday, January 8, 2008 10:24 AM