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Normal mode rejection, filter characteristics
Overvoltage protection...........................................±30 VDC
Voltage Input
Nominal range................................................±10 VDC
Input impedance.............................................1 MΩκ
Noise ......................................................................30 μV
Voltage Accuracy
Gain drift........................................................11 ppm/°C
Offset drift......................................................90 μV/°C
Measurement Conditions
Typical, 25 °C, ±5 °C
Maximum, –40 °C to 70 °C
*
Range equals 10 V
Resistance Input
RTD Temperature Accuracy
Measurement
Range
Conditions
Pt100
–200 °C to 150 °C
150 °C to 850 °C
Pt1000
–200 °C to 150 °C
150 °C to 850 °C
*
Up to 5 m of 22 AWG copper leads, 5% lead length mismatch.
NI WSN-3226 User Guide and Specifications
Filtering Strength
High rejection
Low power
Nominal Range
10 to 400 Ω
20 to 4000 Ω
250 to 100 kΩ
*
Typical
(25 °C, ±5 °C)
0.2 °C
0.3 °C
0.1 °C
0.2 °C
Filter Rejection
–60 dB at 50 and/or 60 Hz, ±1 Hz
–30 dB at 50 and/or 60 Hz, ±1 Hz
rms
Percent of Reading
(Gain Error)
±0.02%
±0.2%
Excitation Current
Maximum,
(–40 °C to 70 °C)
1 °C
2.7 °C
0.7 °C
2 °C
26
∗
Percent of Range
(Offset Error)
±0.01% (±1 mV)
±0.1% (± 10 mV)
1 mA
350 μA
20 μA
Temperature
Drift
Noise
0.017 °C/°C
0.01 °C
0.028 °C/°C
0.005 °C/°C
0.01 °C
0.013 °C/°C
rms
rms
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