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Appendix A
Specifications
©
National Instruments Corporation
A-5
Resistance Accuracy (with I
EX
or I
EX0
)
1
Resistance Accuracy (with I
EX1
)
2
1
Resistance specifications assume worst case common-mode voltage for the given range. Specifications improve if actual
common-mode voltage is less than worst case. Measurement accuracy is affected by source impedance. Resistances >25 k
Ω
may require 1 s setting time.
Range
(W)
% of Reading
15–35 °C
Add
Ω
(with Auto-Zero)
15–35 °C
Add
Ω
(without Auto-Zero)
15–35 °C
Temperature
Coefficient
0–15 °C,
35–55 °C
Filter Setting
Filter Setting
24 Hour
90 Day
1 Year
10 Hz
50 Hz
60 Hz
10 Hz
50 Hz
60 Hz
%Reading/°C
600,000
0.0435
0.0464
0.0494
20.11
23.64
24.63
24.17
26.67
27.37
0.0013
300,000
0.0441
0.0470
0.0500
19.82
21.80
23.22
23.97
25.37
26.37
0.0013
150,000
0.0453
0.0482
0.0512
19.54
20.16
20.67
23.77
24.21
24.57
0.0013
100,000
0.0355
0.0384
0.0414
0.51
1.00
1.28
1.26
1.60
1.80
0.0013
50,000
0.0361
0.0390
0.0420
0.45
0.80
1.02
1.21
1.46
1.62
0.0013
25,000
0.0373
0.0402
0.0432
0.41
0.54
0.74
1.18
1.28
1.42
0.0013
2
Resistance specifications assume worst case common-mode voltage for the given range. Specifications improve if actual
common-mode voltage is less than worst case. Measurement accuracy is affected by source impedance.
Range
(W)
% of Reading
15–35 °C
Add
Ω
(with Auto-Zero)
15–35 °C
Add
Ω
(without Auto-Zero)
15–35 °C
Temperature
Coefficient
0–15 °C,
35–55 °C
Filter Setting
Filter Setting
24 Hour
90
Day
1 Year
10 Hz
50 Hz
60 Hz
10 Hz
50 Hz
60 Hz
%Reading/°C
15,000
0.0320
0.0349
0.0379
1.53
1.62
1.64
1.63
1.69
1.71
0.0013
7,500
0.0326
0.0355
0.0385
1.52
1.57
1.61
1.63
1.66
1.69
0.0013
3,750
0.0338
0.0367
0.0397
1.51
1.53
1.54
1.62
1.63
1.64
0.0013
2,500
0.0240
0.0269
0.0299
0.03
0.04
0.05
0.05
0.06
0.06
0.0013
1,250
0.0246
0.0275
0.0305
0.03
0.04
0.04
0.05
0.05
0.06
0.0013
625
0.0258
0.0287
0.0317
0.02
0.02
0.02
0.04
0.04
0.04
0.0013