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Appendix A Specifications
© National Instruments Corporation A-3 NI 435x User Manual
RTD Accuracy (with I
EX
or I
EX0
)
1
RTD Accuracy (with I
EX1
)
2
1
RTD specifications assume that the 25 k
Ω
(25 µA current source) range is used and worst case common-mode voltage for this
range is present. Specifications improve if actual common-mode voltage is less than worst case. Specifications improve for a
1,000
Ω
RTD.
Error (°C)
15 °C–35 °C, 1 Year
0 °C–15 °C,
35 °C–55 °C
Filter Setting Temperature
Coefficient
(°C/°C) RTD °C 10 Hz 50 Hz 60 Hz
Pt 100
Ω
–200 1.00 1.33 1.81 0.01
0 1.14 1.49 2.00
100 1.22 1.58 2.10
300 1.38 1.76 2.32
600 1.66 2.08 2.69
2
RTD specifications assume that the 625
Ω
range (1 mA current source) is used and worst case common-mode voltage for this
range is present. Specifications improve if actual common-mode voltage is less than worst case.
Error (°C)
15 °C–35 °C, 1 Year
0 °C–15 °C,
35 °C–55 °C
Filter Setting Temperature
Coefficient
(°C/°C) RTD °C 10 Hz 50 Hz 60 Hz
Pt 100
Ω
–200 0.05 0.06 0.07 0.01
0 0.12 0.13 0.14
100 0.16 0.17 0.18
300 0.23 0.24 0.26
600 0.36 0.37 0.39