Measurement Accuracy - National Instruments SCC-TC Series User Manual

Measurement Accuracy

Thermocouple
Type
B
E
J
K
N
R
S
T
Cold-Junction Sensor
Total system measurement error for operating temperature within ±5 °C of calibration temperature. Includes
1
PCI/AT-MIO-16XE-50 one-year accuracy specification of 0.01% ±412 µV. SCC-TC01/02 accuracy specification of 0.08%
±5 µV, and reference junction measurement accuracy of 0.5 °C. Assumes averaging. Non-averaged, single-point reading has
an additional uncertainty (up to ±0.1 °C for J-type thermocouple).
SCC-TC Series Thermocouple Input Modules User Guide
1
Temperature
Range (°C)
400 to 600
600 to 1,800
–200 to –100
–100 to 600
600 to 1,000
–200 to –100
–100 to 500
500 to 1,100
–200 to –100
–100 to 600
600 to 1,200
–200 to –100
–100 to 1,300
–50 to 0
0 to 100
100 to1,600
–50 to 0
0 to 1,400
1,400 to 1,600
–200 to –100
–100 to 400
Cold-junction sensor accuracy................±0.4 °C max from 15 to 35 °C,
Output .....................................................1.91 V (0 °C) to 0.58 V (55 °C)
Maximum
Inaccuracy (±°C)
2.5
2
2
1
1.5
2
1
1.5
2.5
1.25
2
2.5
2
3
2
1.75
3
2
2.5
2.5
1
±0.75 °C max from 0 to 15 °C
and 35 to 55 °C
12
Typical
Inaccuracy (±°C)
0.31
0.13
1.76
1
0.6
1.6
0.9
0.72
1.25
0.67
0.45
2
0.7
1.24
0.82
0.4
1.3
1
1
2
0.9
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