NI USB-9213 User Guide and Specifications
18
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Figures 11, 12, 13, 14, and 15 show the errors for each thermocouple type
when connected to the NI USB-9213 with the autozero channel on. The
figures display the maximum errors over a full temperature range and typical
errors at room temperature. The figures account for gain errors, offset errors,
differential and integral nonlinearity, quantization errors, noise errors, 50
Ω
lead wire resistance, and cold-junction compensation errors. The figures do
not account for the accuracy of the thermocouple itself.
Figure 11.
Thermocouple Types J and N Errors
Figure 12.
Thermocouple Type K Errors
Measured Temperature (˚C)
Measurement Error
(˚
C
)
Max (High speed), 0 to 60 ˚C
Max (High res), 0 to 60 ˚C
Typ (High speed), room temp
Typ (High res), room temp
0
1
3
4
5
2
–200
50
300
550
800
1050
1300
Max (High speed), 0 to 60 ˚C
Max (High res), 0 to 60 ˚C
Typ (High speed), room temp
Typ (High res), room temp
Measured Temperature (˚C)
Measurement Error
(˚
C
)
0
1
4
5
3
2
–200
0
200
400
600
800
1000
1200
1400
